Hello everyone, I'm Portuguese, architect, with a background in electronics, curious and trying to update and get involved in some apple Macs fixes.
 
							
						
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 I Am a Beginner of SMD Repairing, tho i lost my Old Account Because i forgot My Username and Password.Comment
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 Hi all.
 I'm a retired software engineer getting into electronics and no doubt will need some advice before to long!
 JohnComment
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 Hello! I'm Hoang, I'm 33 years old this year. My homeland and where I live is Vietnam.
 I am passionate about computer engineering, and have been involved in this profession for 10 years! Very happy to become a member of the forum...!!!! ​ ​Comment
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 Hi Everybody
 I'm just getting into repair work and came here to get help when I can't work out something myself. I'm sure a lot of my repairs are easy for other, but practice makes perfect. Thanks all.
 Mostly working on Wii remotes and consoles as well as random stuff i.e, air fryers and radios etc.  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
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			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...
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			by fredyjbiplease help friends x1 yoga 7th no display beep melody thank you...- 
							Channel: BIOS Requests ONLY!
 
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			by fredyjbiplease help friends clean me bios x1 yoga 7th no display melody beep, thank you- 
							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
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