Evening! Electronics hobbyist here. Network IT for a day job. Inherited several old laptops with BIOS locks that I'm looking to repurpose and use.
New Members - please post your introductions here
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Hello, I work building wearable computing glasses, but I’m here for schematics on my dog zephyrusComment
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Hello! I've wanted to register here for a long time, but something always got in the wayFinally I found a moment and ... here I am
My name is Marek, I work in IT on a daily basis. Repairing electronics has been my passion for many years. I'm glad to be in such a distinguished group.Comment
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Hi there,
I'm S/L, and I work in the repair business, specializing in smartphones, computers, laptops, and servers. Found this forum and wanted to check in.
Nice to meet you all!
- S/L
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I like beer. I am a fan of old 1970's Mercury inline 6 cylinder outboard motors. I have had a few and enjoy bringing them back to life. I recently was checking the ignition on a 1964 65Hp , I hooked up the Mercury ignition analyzer the wrong way and damaged the unit. I cant find a schematic for the tester so I will have to stumble my way through , hopefully with some help from this forum. I need to work out where to start. I have the power light come on but the switch is a bit hit and miss so that will be my first fix. The unit has some self test modes but these are not working . Any help is appreciated as I have little knowledge but am prepared to learn.I have been watching All you need to know to fix stuff on YouTube and this is a great series. Cheers NevComment
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Hey guys, been curious about eletronic stuff since I was little, going trough the stuff inside and out.
Now I'm trying to make a buck with some repairs and learn some more as that curiosity never ends
I see that we share this so I'm happy to be part of the forum!Comment
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Hello All!
I go by WackyBurakky, the good old gamer tag I suppose.
General interesting in a fair amount of stuff, right to repair supporter at the end of the day. Jack of few trades and master of even fewer.
From Australia, my current project is repairing an older motherboard.
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Hi! I am IT support + network specialist. Sometimes build or fix some PC stuff from my friends and colleagues. Already trying to learn a bit how to handle 8FC8 Dell bios passwords - got 3 locked laptops to test. Thanks!Comment
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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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