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Hi thanks for the reply, customer didnt have time so I closed ticket, thanks

Hi I have an 820-00850 with liquid damage. Display connector is a bit burned< i assume thats 25v into the CPU. Is there a way to test the CPU and I can make sure it's dead? What resistance to ground should I measure?

ok thanks for the help

Hello, Yes mouse red light turns on I would say pretty white yes, not grey External display gives us the same white screen, so it looks like a GPU issue :( Check all small coils FL8300-03 and pull-down resstors R831x. = same as good board Compare diode mode readings on data lines with similar...

Hi Guys, I have a 820-3787, black display and I cannot find the issue all voltage seems there. Found some resistor off value near U7701, I replace the R and also U7701. After that, backlight on but I get a complete white display. All LED returns have correct value all voltages present 3.3v and...

Tried with another charger and got Apple logo so this one can be closed ;)

I injected 1v, cpu gets 0.9-1.5v, how can it blow up from 1V? I replaced the bad chip now I have no more short and 12.29 on PPBUS I have not seen any video from Louis on how to repair these boards so sorry if I dont follow the correct procedure, been reading up a=on the forum on how to find...

Hi guys, this 820-00850 has no liquid spil and 0V and shorted on PPBUS. I put 1v in PPBUS line but nothing heats up. Before ramping up the voltage, how you usually look for shorts on these? I believe if I put to much power in I can short the CPU? Edit see attached image found this, looks like a...

OK thanks for the tip

I saw SMC-LID going to the IO Board, replaced that, working now.

Hi guys I have a liquid damaged 820-00165 of which is fixed the ffedback trace in backlight circuit. Works fine now. However, when I close the lid, the apple logo still lights up. Seems the sensor is not working, where is it located?

Hi guys I have an 820-00850 that just stopped working. Board looks super clean no signs of liquid damage. I have 5.14v and 0.06A on charger. PPBUS is 12.26v (thought it should be 13.01v?) and 3.3v on the CD3215C.his low voltage on PPBUS indicate SMC issue same as with older boards?

Hi Guys, customer came with this one 820-3332 not charging the battery. Green and orange light and shows charging but under system settings it says no charge. Tried a new battery same issue. Measured all resistor around U7000 all seems OK. Resistance between pin 17-18 3.8ohm and between 27-28...

Board was fixed, bad resistor near SMC

Hi, i have a 00239 that had a small liquid spil near the display. Some liquid near the connector, but after wiping it looks clean no burned pins on the connector. Mac boots with external display, but does not output to the LCD. I have tried a working (cracked) LCD but same. Can it be that the...

Status update: Replaced U5110 as pin 7 showed 0.117v, after replacing 3.47v and orange light + PPBUS = 8.59v. Also I get SMC_PM_G2_EN = 3.4 seems SMC is running. Missing now 5V, ofcourse.... no enable signal at R7551:rolleyes:. Will use the search button.... :D

dude i know how to use the search function but i dont pay 29 USD for the 3 question i ask per month to spend my time searching..... I assume you get paid to answer questions? If i search i dont need a paid forum.

Hey guys, liquid damaged 820-00281 came in with 5V on the USB ports. I measure 3.4v on PP3V3_G3H. One thing, if I plug in the USB tester on one side it stays on at 5V, on the other side it keeps turning on and off. No CD's are getting hot, checked with thermal cam and alcohol. CB301 has some...

Hello, we have this 00165 that 8.17v, it had corrosion on U3510. After replacing, still 8.18. Rest of the boards looks clean, now we changed the SMC 3 x (no stock left:() but still get 8.17. I do get SMC_PM_G2_EN on U7501? Is there something else that can pull down the SMC power to 8.17v? I did...

Found a short on SMC probe point, rebaled SMC and working again, thanks guys!