today i have 4 laptops with burned PCH in CPU. congrat to great work Intel 
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Re: today i have 4 laptops with burned PCH in CPU. congrat to great work Intel
Seen this a lot with DJs/audio engineer units. Something about their audio equipment loves to blow PCHs in some cases. Don't know enough to understand why, but connected the dots across several years and for whatever reason, having external audio equipment connected when "something" goes wrong = blown PCH, usually dramatically. Of course, it can happen from many different causes, but I thought it strange how many we had ended up belonging to someone who worked in music. -
Re: today i have 4 laptops with burned PCH in CPU. congrat to great work Intel
Agreed, almost every other unit comes with shorted pch part of soc. Cpu fault is also very common on 7th gen onwards with either memory controller of cpu going bad and in some cases upper mosfet( newer ones with dual mosfet) shorted on gfx line blowing the gfx part(igpu) of cpu.Comment
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Re: today i have 4 laptops with burned PCH in CPU. congrat to great work Intel
Audio equipment can have phantom power which will damage motherboards. Audio IC can easily get burnt but PCH can probably get a hit too. USB devices can also easily damage PCH if something goes wrong (and there's no TVS diodes or they didn't protect properly).
PCH have been pretty weak since 8-series, they already die by themselves and external events can easily damage them as well.OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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Hi everyone 😀,
I'm here today to ask for help with repairing the motherboard of a Lenovo Legion Y540 17IRH.
To give you some context, I'm passionate about computer repair so much so that I've invested in a lot of tools and started practicing on dead and old hardware. I've been learning how to solder and desolder components, mostly focusing on phone repairs.
Recently, I bought a broken Lenovo Legion Y540 17IRH for just €150, and there are two main reasons why I made this purchase:- I already own the exact same model, but its plastic chassis is badly damaged.
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I have had an issue that I've never come across in all my years of laptop repairs and it has happened twice in the last couple of weeks. The issue occurred on 2 laptops.
1. The first laptop a Lenovo Yoga 7 convertible 14 inch 13th gen i7. This laptop came in working, customer wanted to replace the top keyboard assembly for cosmetic reasons so I replaced the keyobard assembly and put their touchpad in it. After booting into windows it would not work, so I assumed I needed to update it or something. Since they didn't give me the Admin account, as it was a company laptop and the...08-31-2024, 07:30 PM -
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Hi guys,
Today I pulled 5 Lenovo T420 laptops out of a bin at the rubbish tip, and they're old school laptops and they're all locked with a supervisor password.
In the past I've unlocked similar Lenovo laptops, often I used the trick of shorting a few pins together on the chip on boot to get into the GUI and overwrite the config but it doesn't look like that is working with these laptops. I guess Lenovo fixed that trick? I have unlocked some other HP laptops by reading the chip, running a patch and re-writing back.
But I can't work out these T420...11-11-2023, 10:05 AM -
Hello, I have an "ASUS ROG Strix G713QR" laptop, and for approx. 3 months I have the following problems:
1. Laptop keyboard doesn't work
2. The backlight on the laptop keyboard doesn't work
3. The x2 side LEDs (red) on the laptop don't work
The power button works, the touchpad works, and all the USB, HDMI, Ethernet, etc. ports work.
I already tried to reinstall all the drivers and reinstall Windows. So I don't know what to try anymore that is software-related.
But I am strongly aiming that it is somehow a BIOS-related problem,...
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