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Does the battery charge while reviving? Did you put it in DFU?

Was the bios issue resolved, does it boot to recovery again, or still no startup sound? If it boots and you're having port issues, check that all the pins are seated well, if someone changed the USB ports. Also, you could remove or replace thunderbolt controller (U2800). That chip can cause...

Someone will know better than me about monitoring the correct coil voltage, but that looks accurate to me. Thermal cam is picking up heat in the correct place, that's the T2. I would attempt to revive it now, though it may be better to have it in DFU mode, not recovery mode. It probably isn't...

No T2 on this board, do you mean the shield for the Intel thunderbolt controller? If that chip has issues, that would explain USB inputs not working. You need thunderbolt working for using almost everything USB C, except charging

I'd say also check thermal cam again while trying each port, while not installed in the body/housing. Is it 20V at .05A consistently or does it fluctuate or loop at all? IF this port cleaning did fix the board, it will not boot now since the DFU revive attempts have failed previously, due to the...

If you're not getting anything from one of the ports, have you not disassembled further to check for liquid damage? Also, have you tried known good ports? If you get no response from one port using a known good pair of USB ports, then you have a CD32 issue or something related to it. This would...

Using known good charge ports? You need to address non working CD32 if that port is looping, even if it's not being used.

Check if DFU possible using Configurator? (while it's at 20v)

Oh, that's unfortunate

Have you tried a new top case/keyboard assembly since finding known good (and correct version) LCD assembly? Also, when you see KBDBKLT voltage jump, does the keyboard show any brief sign of illumination? I had a 1932 with this behavior, turned out the keyboard itself had corrosion on ICs behind...

Hi all, hoping to get help narrowing down an odd issue. Board has had liquid damage, and would not boot when it was dropped off. Never had a G3H short prior to cleaning or afterwards. Cleaned and reflowed minor liquid damage, nothing severe enough to cause a short in the first place. Reflowed...

Hi, I'm sure you've already considered this, but is the screen original or a tester? Every time I've had this keyboard backlight issue, it's the screen being from an incorrect revision of the 2179 (or 1932). KB backlight shows only prior to login (first boot at lock screen), but goes away after...

After days of image with no backlight, it seems we've now downgraded to no image and no backlight :( (external image still fine) Thanks again for your input, I'm not sure whether or not no image sheds any light on backlight issue (pun intended). Multiple PRAM resets, swapped J8500 cable for...

Thanks for the welcome! Image fine, boots fine on external display and LCD (tried multiple LCDs) . BKLT_EN_R - 3.3V BKLT_SD - 12.8V Testing donor side-by-side with identical measuerments. Donor reads 6.3V on BKLT_SD when backlight turns on, subject board does not change from 12.8V. Pin 4...

Hello all, first post here, apologies for any missing details you all may need to help me. I'm ready to provide measurements for any component. 820-00239 board, perfect shape, no liquid damage whatsoever. Below is a list of every component I've replaced so far. I have a donor board I frequently...