Speaker A
Like this: "Hello! Hello, dear subscribers and guests of the channel. Today, everything is just as you like it: a gaming laptop with a banal, typical problem that is widespread now, and delightful computer service.
Repair and diagnosis of a rare Lambda gaming laptop with power phase issues and boot failures, highlighting challenges with Chinese components.
Key Takeaways
- Lambda gaming laptops have unique but repairable hardware issues often related to power phases.
- Chinese manufacturers sometimes remove component markings, complicating repairs.
- Proper diagnostics and thermal management are crucial for resolving boot and power problems.
- Repair costs can be high and parts availability limited for rare or discontinued models.
- Careful handling and thorough inspection reveal manufacturing and previous repair flaws.
What the video covers
- The video features a repair of a rare Lambda LLT161M01 gaming laptop with Ryzen 7 6800 and RX6650M XT.
- The laptop exhibits a common but strange problem: it boots then shuts down or reboots in a loop.
- Previous service attempts included thermal paste replacement and diagnostics but failed to resolve the issue.
- Power phases on the GPU are problematic, with Chinese manufacturers removing markings and using non-original parts.
- The repair process involves detailed diagnostics, including power supply testing and thermal pad adjustments.
- The laptop has a 16-inch 2.5K 165Hz IPS screen with RGB lighting and a metal-plastic body.
- The battery was found drained but connected; charging behavior was tested with a lab power supply.
- Repair costs are high and uncertain due to the rarity of parts and lack of official boardviews.
- The video criticizes poor manufacturing and repair practices, including broken mounts and dusty fans after short use.
- The repair is ongoing with parts inquiries and further measurements planned.
Chapters
- 00:00Introduction and Laptop Overview
- 01:53Initial Problem Description and Previous Repairs
- 03:16Power Phase Issues and Repair Cost Estimation
- 06:02Detailed Diagnostics and Battery Testing
- 07:35Physical Inspection and Thermal Management
- 10:22Component and Mount Damage Analysis
- 19:07Memory Module and Common Issues Discussion
- 26:04Summary and Repair Challenges
Full Transcript — Download SRT & Markdown
Speaker A
However, see for yourself. So, I have on my workbench awaiting repair this curious, quite rare gaming laptop named Lambda. There haven't been such laptops on the channel before, although I've repaired them more than once, and I've already been asked questions about them
Speaker A
However, see for yourself. So, I have on my workbench awaiting repair this curious, quite rare gaming laptop named Lambda. There haven't been such laptops on the channel before, although I've repaired them more than once, and I've already been asked questions about them.
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it feels nice to hold in your hands. It's not particularly light, but compact and interesting to the touch.
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So, I'll take this opportunity to show you what's inside. By itself, the laptop looks nicer than the usual banal and one-dimensional Chinese models. And the fact that it's a domestic laptop, I think I won't specify. And, by the way,
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Lambda LLT 161M0, and, strangely enough , from last year. Ryzen 7 6800, 16 gigs of DDR5 4800 RAM, a 512 SSD, 8GB RX6650M XT, and a metal-plus-plastic body, which means you can't keep it on your bare knees. A bright 16-inch 2.5 K
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it feels nice to hold in your hands. It's not particularly light, but compact and interesting to the touch.
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but either the battery is dead, or they turned it off at reception, because it was definitely turned on. The laptop has a strange, but seemingly typical problem. It turns on, starts to boot, and either shuts down at the start of
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From the stickers on the case, it's already clear what this wonder is, but let's get to know it a bit better.
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and inexpensive one, that is, an economy service center. They opened it up, changed the thermal interface, and when that didn't help, they diagnosed and diagnosed, but couldn't find the fault. They didn't provide any paperwork and charged only 1,000 for
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Lambda LLT 161M0, and, strangely enough, from last year. Ryzen 7 6800, 16 gigs of DDR5 4800 RAM, a 512 SSD, 8GB RX6650M XT, and a metal-plus-plastic body, which means you can't keep it on your bare knees. A bright 16-inch 2.5K
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needed, and it took a serious amount of time. Sometimes the drive behaves incorrectly, sometimes the phases are phasing and out-of-phasing incorrectly.
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165Hz IPS screen, and RGB lighting for the keys and the chassis. Such a gaming wonder weighing 2.4 kg can now be bought for 66,000. And so, this curious laptop. So, for some reason, it doesn't turn on. Strange, because it should,
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However, what am I saying? Well, that is, we have now serviced it and started it up. The launch, unfortunately, isn't correct because the drive, first of all, is behaving incorrectly. Plus, besides all that, there are questions about the power
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but either the battery is dead, or they turned it off at reception, because it was definitely turned on. The laptop has a strange, but seemingly typical problem. It turns on, starts to boot, and either shuts down at the start of
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usually shave off the top part and, roughly speaking, mark it as their own. Can you give me an approximate price?
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loading or reboots in a loop; it doesn't load the OS fully. The most amazing thing is that after purchase, the laptop worked for only 3 months, and it has already managed to visit two computer service shops. First, a small
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regarding spare parts or an equivalent. I mean, in reality, these power phases simply deliver their rated power. They could be the exact same ones installed in an HP, an Acer, or a Lenovo.
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and inexpensive one, that is, an economy service center. They opened it up, changed the thermal interface, and when that didn't help, they diagnosed and diagnosed, but couldn't find the fault. They didn't provide any paperwork and charged only 1,000 for
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tomorrow at the latest, I will receive information from the warehouse and give you the exact cost of the repair, because provisionally, well, this is a guess. You see, usually, the timeline for this is much faster. There is just
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the diagnosis attempt. After that, a second service was found with good advertising, a bunch of excellent reviews, and specialists who inspire confidence. And the problem with the laptop turned out to be really serious, because an in-depth diagnosis was
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Didn't you find the story about the phases strange? Anyway, after some time , the repair cost was determined. Quick and dirty, only 50,000, but the price is not final. It is possible that something else will have to be changed.
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needed, and it took a serious amount of time. Sometimes the drive behaves incorrectly, sometimes the phases are phasing and out-of-phasing incorrectly.
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in-depth, "they asked for 7,000 for them. And that is not a joke. But after long and painful negotiations, especially considering his student status, the cost of diagnostics was very reluctantly reduced to 3,000. And now the laptop is with me. By the way,
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The service tried to figure out these phases, which the crafty Chinese cut off and don't mark, and there were no original phases in stock, only analogs.
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have seen something similar on similar devices. A bit more modest, perhaps, but that's not the point. The culprit is the idiotic design with a protruding stepped casing. It is enough to place the laptop not on a flat surface, but
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However, what am I saying? Well, that is, we have now serviced it and started it up. The launch, unfortunately, isn't correct because the drive, first of all, is behaving incorrectly. Plus, besides all that, there are questions about the power
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Let me connect the laptop to the laboratory power supply and see how it behaves. The current consumption is 200 mA. It seems the battery is actually connected and was drained. Yes, that's it, it's charging. The battery is truly
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phases on the video card. Therefore, we need a little more additional time here for measurements. We have currently made an inquiry regarding the power phases, whether they are in stock or if we can at least find equivalents, because with Chinese devices they
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for all characters, not just the Latin ones, is even—unlike even some brand-name devices. Alright, waiting for it to boot. A screen with a Lambda logo appeared. Starting to load, and that’s it; looks like the unit went to reboot. Logo again, preparing
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usually shave off the top part and, roughly speaking, mark it as their own. Can you give me an approximate price?
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Sometimes it even turns off completely. Oh, and right now it even threw an error. Stop codes: hypervisor, virtualization error. Basically, as expected. Even without this error, I already suspect what's wrong with the laptop. But let's not rush. Besides,
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Unfortunately, I cannot give an estimate because the device is new and there are no boardviews available. That is, roughly speaking, what we base our work on. Boardview diagrams, strictly speaking, do not exist. We have now sent a request to the warehouse
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Anyway, one could admire this problem for a long time, but I think it’s time to stop tormenting this poor, dying creature. Time to open it up.
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regarding spare parts or an equivalent. I mean, in reality, these power phases simply deliver their rated power. They could be the exact same ones installed in an HP, an Acer, or a Lenovo.
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shops. Traditionally, checking the bottom cover. There are no traces of liquid damage on the bottom, as expected. And the bottom was smudged a bit by diagnostic fingers. The fans are quite dusty, and that shouldn't happen even after 3 months of constant use.
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That’s just by way of example, so you have an understanding. That is why we are currently choosing by, frankly speaking, trial and error, because there is simply no information. And we have just sent a request. By 5:00 PM
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consequences that entails. Also striking is the quality and the amount of thermal pad application. And it seems to me that they just shoved a huge pile of Laird under the heatsink.
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tomorrow at the latest, I will receive information from the warehouse and give you the exact cost of the repair, because provisionally, well, this is a guess. You see, usually, the timeline for this is much faster. There is just
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right next to the charging port. People wouldn't mess with this for no reason. The connector has clearly been soldered —that’s 100%.
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no information on the state of the laptop itself regarding components, so we are just waiting and that is why it is delayed, but we are working on it.
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was picking at. Now my task is to remove the heatsink and look at the service quality and whether it affects the laptop's problems. A 512 GB ForC SSD from Longsys. A standard Chinese SSD, though not bad for its class. And
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Didn't you find the story about the phases strange? Anyway, after some time, the repair cost was determined. Quick and dirty, only 50,000, but the price is not final. It is possible that something else will have to be changed.
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Carefully removing the heatsink by the middle. Ta-da-da-dam. That is exactly what I expected. The GPU die had perfect contact with the heatsink, despite a heap of Laird, 2/3 of which had squeezed out. And the owner got lucky with that. It's rare when an
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The laptop owner is a student with limited funds, but his math is fine, so he declined such an "advantageous" offer. Paying 50,000 or even more for a laptop worth 66 is, well, strange. And considering the diagnostics were
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cooled perfectly, but the CPU, to be honest, is questionable. I wonder why that is? With an excess of Laird, it should be the other way around. I examined the heat pipe closely, and it looks a bit deformed. The contact area
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"in-depth," they asked for 7,000 for them. And that is not a joke. But after long and painful negotiations, especially considering his student status, the cost of diagnostics was very reluctantly reduced to 3,000. And now the laptop is with me. By the way,
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free of chips and damage. The CPU die also looks excellent, which I wish for you too. But the Laird on the heatsink had dried out and become sandy, despite being applied recently. Although, it’s clear why expired stuff, which
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here is the reason why the laptop cannot be returned under warranty. Damage to the casing, which fits very well under the definition of mechanical damage, is grounds for a warranty denial. And no, the laptop was not hit or dropped; it was handled with care. I
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testing, but I need to check the contact between the die and the heatsink, because I had to adjust the heatsink a little bit after all. Plus, I still need to apply liquid thermal pads. And since I’ve had issues with
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have seen something similar on similar devices. A bit more modest, perhaps, but that's not the point. The culprit is the idiotic design with a protruding stepped casing. It is enough to place the laptop not on a flat surface, but
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RAM is also mine and also verified. Let's see if there will be any changes.
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on something with bumps or ridges, and if you catch the plastic, the casing in the thinnest spot under the ports is easily damaged. Warranty, too, alas.
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here are your changes. SSD. The laptop lost my working SSD somewhere. So I'll reboot manually with the three magic buttons. I actually expected another reboot, but strangely, the unit booted up. Then I'll install the drivers on my test SSD. This time, with just one
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Let me connect the laptop to the laboratory power supply and see how it behaves. The current consumption is 200 mA. It seems the battery is actually connected and was drained. Yes, that's it, it's charging. The battery is truly
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parts, but there are no mechanical faults. I was almost certain of that. Just in case. What if I just wiped, cleaned, and straightened out the original RAM. I put it back in place, and the laptop turns on, boots up, and
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discharged. Turning it on. After a dead battery, the boot process is predictably long. The front of the case has little lights, highlighting its special "gravity." The keyboard has lights too, and the keys glow in the same tone as the case. The backlighting
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into the laptop. I kept my own SSD and installed my own test memory module for the sake of the experiment. Next, I’ll put the bottom cover back on and put the laptop on a shelf. I'll let it sit there for about 10–12 hours.
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for all characters, not just the Latin ones, is even—unlike even some brand-name devices. Alright, waiting for it to boot. A screen with a Lambda logo appeared. Starting to load, and that’s it; looks like the unit went to reboot. Logo again, preparing
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Well, the next morning has arrived. Or rather, not exactly morning in the traditional sense, it's 2 PM now. I’m turning on the laptop, and to keep the video short, I’ll speed it up.
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automatic repair, and another reboot. Starting to load again, and then a reboot. And this right here is the reported behavior of the laptop.
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the laptop on in this state for about eight minutes. Let it sit, that should be enough. As you can see, the laptop has booted up normally now. Next, I’ll start Superposition, which for some reason crashes and refuses to test
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Sometimes it even turns off completely. Oh, and right now it even threw an error. Stop codes: hypervisor, virtualization error. Basically, as expected. Even without this error, I already suspect what's wrong with the laptop. But let's not rush. Besides,
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it will still work just fine. It could sit for 2, 3, or 4 hours and still work normally. But after 8 hours or more, everything will go back to square one.
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when I received the unit, it was losing its bootloader. I think the competent technicians watching this channel have already made the right diagnosis.
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laptop apart again. Completely this time. And I didn’t say" Which lucky guy has CPU glitches in the morning? " for no reason. Because the behavior I showed you is typical for buggy Ryzen 7 6800H and Ryzen 9 6900H processors.
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Anyway, one could admire this problem for a long time, but I think it’s time to stop tormenting this poor, dying creature. Time to open it up.
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issue until the device warms up. For some, the warm-up might take 5 minutes, for others 15–20. Various errors can occur. Usually during boot, but once the laptop warms up, it can work for hours or even days. But if you turn the
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There are indeed screws missing from the bottom panel. They lost three of them somewhere. And it looks like the third screw was lost along with its mount on the flimsy Chinese case. What can you do? The cost of budget repair
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warm up the laptop for 10 minutes and keep working. Sure, you could do that, but there is one" but. "The laptop has an SSD, and every time the system crashes, hangs, or spontaneously reboots, the OS can get corrupted, and
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shops. Traditionally, checking the bottom cover. There are no traces of liquid damage on the bottom, as expected. And the bottom was smudged a bit by diagnostic fingers. The fans are quite dusty, and that shouldn't happen even after 3 months of constant use.
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laptops with this kind of problem are brought in by the dozens. ASUS, Lenovo, Chinese brands, really any of them.
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First thing, I disconnect the battery. By the way, I'll find out later from the owner that they didn't use the laptop constantly, but it had run for more than 3 months because it was bought as a display model, with all the
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And when I first picked up the laptop and turned it on, I knew within 10 minutes what was wrong, and I suspected a faulty processor. But I still needed to show you everything clearly. Even now, while editing this video, I
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consequences that entails. Also striking is the quality and the amount of thermal pad application. And it seems to me that they just shoved a huge pile of Laird under the heatsink.
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marketplace, even with a test. But, as you understand, only after a preliminary heat-up. And as a result, this or a similar problem definitely means a processor replacement. Because if you're lucky, you'll have to keep heating it up constantly, and if you're
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They r
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power jack and broke the connector in the process. And the surprising story about the GPU power phases. Whether they soldered the power jack or not, I don't know. That's honest, because such soldering is characteristic of new laptops too, just like crystallized,
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proper flux. Sometimes the connector can be manually resoldered during board assembly. Well, and if they did solder the connector, it was only to attach power wires to it. Perhaps the technician didn't have the right adapter, and he didn't even know that a
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Dell or HP connector would fit. And I already told you and explained about the LAN port and its damage. And here, actually, in front of you are the GPU power phases, implemented on MPC DrMOS.
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And then, in order, come the CPU power phases. Surprisingly, no one soldered, replaced, or swapped them, and for some reason, the Chinese didn't even scrape off the markings. Although that even sounds ridiculous. And the whole story over the phone about power phases is
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complete nonsense too. Moreover, no one had removed the protective sticker from the board before me. And no matter how virtuoso a solderer is, you can’t swap a chip without removing that sticker intact. So, the shop held the laptop for a month with a standard
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issue and fed the client a bunch of lies. Probably to justify a 50,000 fee for a" complex repair, "or maybe even more. I have a feeling that either the manager talking about phases and labeling is a total amateur who's
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beyond help. Either they were just scamming the owner for money without stating the real cause, or the techs are real" artists "of the worst kind.
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Well, screw them anyway. Let that be on their conscience, if they have any left and didn't trade it for an eraser in school. Anyway, I informed the owner about the processor replacement. For a new retail unit, we’d have to use a
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brand-new one. Or, considering their student budget, a significantly cheaper option. A pre-release engineering sample. And this very engineering sample is what I’m pulling out of the bag right now. I won’t say where I bought it. I’ve already advertised
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that online store enough. So, these processors have the exact same markings . One says AMD Ryzen 7, and the other says AMD Sample. It will work perfectly , just like the retail version, if you know who to buy the right samples from.
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First, I’ll give this brand-new processor to my assistant to reball it with a gentler leaded solder. And off-camera, I’ll remove the underfill myself and take off the heatsink plates glued to the board. In short, the board is already on the soldering station.
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Removing the faulty processor. I’m skipping the preparation steps for installing the new one. The RMPR soldering station will do the rest on its own. The brand-new processor is installed. I’ve already checked the alignment and quality of the installation off-camera. I applied some
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test thermal paste, and I won’t even test the board for power-up yet. I went straight to prepping it for the chassis , renewing the adhesive tape under everything that needs to be stuck to the board. Stickers, rubber bumpers,
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and so on. And I wasn't wrong about the missing mounting point under the hinge.
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There’s absolutely nothing under the hole where a screw could go. And here, I don’t understand how they could’ve even lost the mount under the hinge. That requires a special kind of effort and skill from the technician . The broken mount, strangely enough,
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was found under the decorative panel. To find it, I even had to peel that panel off the chassis, which was long and tedious. This design is amazing and wonderful. They really went to great lengths for this. The Chinese don't
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look for easy ways in their design and engineering. I’ve partially reassembled the laptop for further testing. Putting the bottom cover back in place. And let’s see what we’ve got. The battery is charging. Turning it on. I’m starting to get nervous
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here because there’s no picture, so I even plugged in a USB tester. Well, it beeped, the picture appeared, and the tester is happily flashing its lights.
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And oops, a boot error. Judging by the error code, these are issues with the system on the original SSD. So I’ll have to continue testing using my own test drive. I swapped the SSDs off-camera. Booting from mine. The
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laptop has booted up. It booted up relatively quickly and without errors. And even the tests are running and checking out fine. I’ll run them for about 40 minutes or so. During the final assembly, I applied phase-change material to the GPU and CPU dies. And
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liquid thermal pads from Denka on the video memory and VRM. These soft Denka thermal pads are just the perfect option for devices with hot VRMs and small gaps, where thicker, brittle pads aren't recommended. It’s a shame this is my last bit of Denka. It’s been
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almost a year since it was discontinued , and I can't buy it anywhere anymore.
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There’s only expired stock left, which I won't buy myself and wouldn't recommend to you. So, the device is assembled. I hope it’s done correctly . Let’s, in principle, start by checking that it’s assembled properly . I hoped in vain. I didn't connect the
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Wi-Fi antennas. They were left taped to the case under the battery with acetate tape so they wouldn't short anything out. Well, I’ll find out about that later and plug them in. Yeah, it happens. Next is turning it on and
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testing the device. That means tests, tests, and more tests. And this right here is a proper morning test. The boot and freezing issues are gone. However, I never really doubted that. So, the device is repaired. I also reinstalled
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Windows here, but after the device was returned, it came back to me a couple of days later because the system now shows only 8 GB of RAM, even though it had 16 GB before. I opened up the device in front of the owner right at
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the reception desk and didn't see anything unusual. Then I showed him the video of the first teardown, confirming there was only one memory module and that the very same module was in the device when it was picked up, just as
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it is now. It’s a good thing I recorded that teardown on camera, because a miracle happened with this module, a simply incredible transformation of material reality.
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When the laptop was bought, there was one black DDR5 module, but it was 16 GB . But when the laptop reached me after the previous service, the memory module had shrunk a bit to eight—a manufacturing shrinkage, so to speak.
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You could assume that the previous repair shop left their test module in the laptop, and now some poor, miserable technician is tearing his hair out in frustration, wondering where a 16GB module appeared on his desk, calling all his past clients in
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total confusion. But we’re adults here, and we know full well that’s just me fantasizing. Because if they had forgotten a 32GB test module instead of a 16GB one, there would definitely be some real frustration. As it stands, it looks like the original
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module was" liberated. "Though, maybe it was just a strange mistake. That happens too. And since there wasn't just one previous repair shop, but two, there’s no way to track it down now, alas. Moving on, the standard repair cost is 30,000 rubles. That's my
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personal student rate, exclusively for subscribers. And you, dear viewers, now know thanks to this video that buying new display models, and especially used laptops with Ryzen 6800H and 6900H chips (as well as 6500) from nameless online marketplaces, is very
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unpredictable, because you just need to run a problematic laptop long enough to warm it up before the sale, and it will seem perfectly functional. But only until the next morning and the morning power-up. That’s exactly when the carriage will turn into a pumpkin, and
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the laptop into a glitchy piece of junk . And if any viewers run into problems with the symptoms I’ve shown, consider that you’ve done your own equipment’s diagnosis correctly, and you won't be fed lies by the enterprising" diagnosticians "at shady
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repair shops, since this is a typical, widespread problem. Taking this opportunity, I want to say hello to that amazing shop that replaces broken phases with identical ones, even though those clever Chinese sellers grind off the top of the anti-phase markings.
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That’s all from me. If you enjoyed the video, be sure to leave a comment, even if it's just to support the channel. And as usual, like, subscribe, and goodbye. I’m Alexey, and there will be new videos soon. Hey
Topics:Lambda LLT161M01gaming laptop repairpower phasesRyzen 7 6800RX6650M XTChinese laptop componentsthermal pasteboot loop issuelaptop diagnosticsnotebook repair
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