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Hi this board has been working fine in a chassis after a keyboard swap a month ago. a daily driver for a client. Brought to me again as the external display/thunderbolt port stopped working. This is not yet fixed although I did find U3210 literally half of its pads and a couple of passives...

on an 820-00165-02 board, I've replaced the backlight driver (new chip) and R7716 (was missing) and the display now works. The connector and cable were completely clean of corrosion and no scorch marks. but on connecting everything up, I am getting visible stage lights. i don't have a...

i have just started looking at this board. lots of rubbish all over it but no real corrosion to see under a scope. plugged it in and the board started up with no orange light. green light, chime, fan spin and image but no backlight. I replaced the backlight driver and backlight was back...

Any classics for the above? Posts fine.

Hi i have an 820-3208 in an S0 state. but no fan spin. The missing S0 rails are PP0V75_S0_DDRVTT PPVCCSA_S0_CPU PPVCORE_S0_CPU PPVCORE_S0_AXG incidentally PP1V5_S3_CPU_VCCD is at 1.35v and not 1.5v all_sys_pwrgd is not present (50mv) I have changed Q7950 twice just in case inputs on...

Any thoughts into why a Mac air would not be saving started to pram (eg keyboard info)? Always boots into password recovery.

I've just finished repairing an A1465 after a liquid spill, but the keyboard is resisting attempts of cleaning with alcohol. has anyone tried cleaning them in an ultrasonic bath? ditto with a trackpad - does an ultrasonic negatively effect the surface? thanks in advance. Justin

Any help with this board would be appreciated. no history to help. the board was clean; no evidence of corrosion nor any tarnished test points. all g3h rails are present and correct. Good 32.7kHz pulse coming from pin 12 of the RTC (replaced RTC in any case as I was seeing a pulsed voltage...

I have an old mac air board for an A1369. Fully functional I swapped out the SSD to do some data recovery on an equivalent drive and when that was complete, swapped the old drive back in. Dead. Obviously worked on anti-static basis and drive was not dropped or anything. is there any...

I have an 820-3208a with paint spill in a bunch of places. Seems to have got everywhere and although it was non-conductive paint, the board had serious damage around the pp3v42_g3H area on both sides of the board. the stop mask has evaporated in a number of places; but I have rebuilt the whole...

I had a rain damaged 820-3437b in the last few days. no obvious problems/corrosion on the board, there were some s0 rails present but no vcore and no fan spin. on testing I found that no pp5v_s4r3 was present on the dcin connector, so replaced that. Then U8080 got very very hot. Replacing...

Hi, I have an A1465 in at the moment. There is not the usual 820-* board designator but there is a designator of NYKS94V-0 NM19182T 08B Is this a known board variant and if so is there an equivalent board designator for schematic purposes? thanks Justin

I got one of the above through recently and opened it today. Supposedly dead, but once I disconnected the battery and swabbed away some of the worst of the gunk it span up ok. the board was disgusting. Green goo, hair and (probably) rice grains all over the place. no specific area worse...

I've just had one of the above in. bits of stray metal wire all over the motherboard (abortive hookup wires?) and many of the probe points are bright blue; some are purplish. It looks like a huge current has passed through the board. no orange light, no green light no PPBUS. U7100 gets...

I've got a liquid damaged (but pre-cleaned) 820-00165A that isn't spinning up. The liquid damage _appears_ to have been pooling around the edge of the board with some residual grubbiness around the SMC and the RAM chips. The G3H rails are present and the green->orange charger light is as...

Any thoughts on power button not working? Tried two keyboards and two batteries (one known good of each) . No obvious corrosion on trackpad . Continuity in ribbon cable seems fine. No obvious corrosion there either. Connector on board is fine too. Board powers on with charger . Recognises...

Hi ive got one of the above coming in for a look later this week. Liquid damage 14 days ago. It was for a friend so i tools quick look, checked for obvious shorts, cleaned it up and sent t back. He reported that the machine worked lie new. Since then the fan has started spinning at full revs...

Hi I've got another mac air in at the moment Coffee damage. Sugared too. the whole backlight area is nasty. Fuse blown. I've replaced that and the green light goes nicely to orange. But fan stays at high speed throughout. No power in the backlight circuit. Looks like there's no signal...

Hi The 820-3435 I've been repairing is mainly done now. Powers on ok, screen connector and cable replaced as well as bunch of passives and the clock chip . Two things are still awry . 1. The camera is not present . 2. The right arrow key of the keyboard is not recognised . Any thoughts...

I was trying to solder back a broken speaker/mic connector last night and after finishing that job I found that the board would no longer power up. It's been a faithful companion to me since I bought it in 2009 so I would rather not give up on this one ... All G3H rails are present save for...