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Thanks 2informaticos.
No USB activity and no external video.
No signs of liquid exposure at video connector, touch bar and no discolored solder/components either.
Unable to do DFU anything as I do not have another Mac with USB-C. If there is no other way to DFU I'll shelf this repair for now...
Hi folks,
Got a board here that is immaculate but *every* solder joint and every cap/resistor on the board is discolored. So this was liquid damaged and cleaned after. Been out of the game for a while and I primarily work on older machines so no idea where to start on this one.
Unit draws...
I have ruled out L3504 and the circuit that comes after that component. L3504 - R3551 and everything in between is OK.
With L3504 on the board, it shuts down as soon as Wi-Fi is being accessed, without L3504 (to connect that whole circuit to the J3501 connector) there are no shutdowns. Don't...
Been looking around but don't have a clear picture of where i can find that windows live to make a USB from.
Assuming it is GPU related, which component would I go after to see if it's the same problem that affects the 15" models?
When booting from the internal drive, it either hangs at the Apple logo, logo + bar or shuts off.
Alt-boot shows me the boot picker and I can select an external drive no problem but once it starts loading the OS (any OS), same problems, this includes ASD.
Howdy,
I know of the 15" 2010 model that has a simple fix replacing C9560 but now I have a 17" 2010 model with kernel panics.
C9560 on the 17" is not 330µF so can't try to replace that one but before I start looking for a good replacement cap to try out (if not C9560 then whatever the 17"...
PRAM resets do not resolve, disconnecting the HDD cable does not resolve. I had already tried component isolation which is how I ended up with the Wi-Fi cable being the problem. Could you explain why the BIOS would be the problem?
G'day folks,
Repaired a 3115 with liquid damage and got it working by cleaning up a few small spots of corrosion and replacing U6990.
As long as I leave the Wi-Fi and bluetooth disconnected (J3501) the machine runs great and passes all AHT and ASD tests, boots to a flash drive etc.
With the...
hey folks,
Got a 820 3437 that came in for no backlight. Replaced the backlight driver and now the backlight works for a second after the chime, then turns off. Any ideas on where I should start looking for the issue here? The driver works, backlight works but something is turning it off. This...
I've got an 820-00923 with no Wi-Fi. AHT confirms the no Wi-Fi but this machine is newer than what I typically work on so I'm not sure where to start. No liquid damage, no other damage. Machine works great except Wi-Fi. Any pointers? :)
Looking at the schematic there is a lot more involved with...