Search results

Try new SMC

Post voltage on C7718

Yep all time time.

Prob another bad PCH

ZERO reason to reflow U8900 ONLY RESOLDER with leaded....try changing U8900 first

Agreed this is trash

Donor boards

Agreed and if so what voltage on PPBUS charger only?

Inspect the trackpad trackpad cable I/O Board and I/O cable for corrosion

Does this happen on both USB ports or just one?

Hard to say but will warn you that this will eventually end in dead CPU like every other 12?

Inspect near U6100 for corroded resistors/probe points. Might not be a bad idea to test with a new BIOS as well. Keep old one do not lose it!

Make sure to rule out all housing issues (I/O board and cable, trackpad, SSD, etc.) And yes what did you clean ME with?

Possibly but hard to say. Ruled out any kind of housing issue or SSD issue? I/O Board/Cable, battery, trackpad, etc can cause this. If yes, clean ME region would be a good place to start. Any history liquid drop etc?

Dead GPU like all of them would be my guess.

Try known good battery. Could be bad battery. Also do an SMC reset.

I usually put them in the cleaner for 2 minutes on each side then use alcohol to displace the distilled water. Put back in for two minutes then dry with alcohol and heat. I use compressed air to blow out anything under the big BGA chips CPU/GPU/RAM, etc. Usually leaves minimal streaks and looks...

Try new battery first!!! Bad battery will cause no boot on these. Sometimes has to have a good battery hooked up to boot

How do the ports look are they clean? If so, I'm with 2informaticos.

I use UC on anything with too much flux or corrosion. If it's a simple job like a PPBUS tantalum cap, I just be cautious of the amount of flux I use, and I use alcohol and a paper towel to clean it.