Hello, I've been an enthusiast and computer modder for almost 3 decades now.
New Members - please post your introductions here
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Hello humans. I am Lei. I love everything electronics. I fix laptops for a living and whenever I find anything with a circuit board, I just want to take it apart, take a peak inside and then put it back together.Comment
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Bonjour les gars, décider de rejoindre vos formidables forums. J'ai trouvé cet endroit alors que je cherchais des gens qui connais en del 5490 svp et aider en retours tous excellent dimanche a vousComment
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Hi hi,
electronics hobbyist and tinkerer here. I like to repair both old and new stuff, and occasionally design my own boards and devices. Someone who finds 0201 and QFN fun ;P
Who knows, maybe I'll do it as more than a hobby at some point.
Have a nice one, y'all.Comment
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Hello everyone, I am Stefano from Italy, I am just a computer enthusiast, just as a hobby I started in the 2000s with S.O. installations and asseblaggio of a few machines. I replaced and rewrote some bios chips, changed some capacitors but nothing more.Comment
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Hi everyone! My name is Lio. I've been fixing computers for a while and have recently gone back to school to complete my Computer Engineering degree. One thing led to another and here I amComment
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by fredyjbiplease help friends thinkpad T470 board CT470 series NM-A931 error post "bottom cover tamper detection error"
I've already
flashed the bios clean me and updated from the Lenovo site, then removed the switch and immediately jumped the S3 from pins 1 to 4, 2 to 3 but the problem remained the same, thank you1 Photo -
by fredyjbiplease help friends, I have 3 T490 units with the same case, the USB type C is completely dead, showing 20v 0 amp, loss of voltage VINT20_IN resistance to ground is fine, thank you
I think the problem is that I lost the voltage at PQ0008 pon 1 -PWRSHUTDOWN which should have been high which was picked up by R9512 VCC3SW, thank you very much for your help
PF0002 20v
PQ0005
pin 5 20v
pin 1.2.3 19.8v
pin 4 19.8
resistance
source & drain 2,4 m
source & gate 100k
PQ0006
pin 1.2.3 19.8v
pin 4 19.8v... -
by fredyjbiplease help friends x1 yoga 7th no display beep melody thank you...
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Channel: BIOS Requests ONLY!
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by fredyjbiplease help friends clean me bios x1 yoga 7th no display melody beep, thank you
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Channel: BIOS Requests ONLY!
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by fredyjbiPlease help friends, thinkpad t480 nm-b501 is dead, help me fix it, thank you
usb meter 20v 0.00 amp, after I took the VSYS measurement the drop was only `9.2v which should have been 10.2v I measured from a normal matherboard machine, the VSYS path resistance to ground diode mode is 1900 thank you
LINK to Schematic -> https://www.badcaps.net/forum/troubl...b501-schematic - Loading...
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