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Good day gentlemen, Today I have a 00165 board with no backlight. I didn't spot any signs of water damage (just a tiny spot of green kaka on C3232 and C3233 but that seems to be Thunderbolt related and I replaced them anyway) and I tested it with a new screen. Following a sticky troubleshoot...

No Title Another big thank you to you Duke. I am impressed by our knowledge and experience. Thank you for sharing it with us! Resoldered left backlight strip connector and its good as new again!

And the winner is Duke! Thank you. Bought a new thunderbolt cable and connected it to the port in the back. Been watching movies for over 24 hours now without any black outs. In the meantime received a second thunderbolt display for repair. This one has no backlight after half an hour. I guess...

That is sad. Please close this threat.

Duke, I guess you are right about GENERIC cable because I have "high copy" mini-display cables and they dont work. Or maybe that port is meant for something else. I guess I will start with generic cable and then a PSU. Thanks!

Reflowed video ram and now it boots to OS without any image distortions. However, when running stress test, it crashes after 5 minutes. Do you think its memory? Or should I try to solder another GPU chip?

Sorry if it was not clear from the beginning. I did replace the main flex cable to a "new" one first thing before posting here but the problem was the same with "new" cable. I ordered mini display to mini display cable and will test to hook it up from secondary port in the back of the display...

Yes that is true. It is not a new LCD but another LCD. However, I did some testing and thinking. When the display turns black there is no image at all. Not just backlight. Mac to which display is connected is still in the display resolution but it doesn't detect display in display or audio...

No Title Yes sir! See for yourself. Should I give those bastards a proper reflow first with some tasty flux.

Fuck. It is still doing the same thing with new LCD... Can it be power supply or the logic board?

Hi there, First it had a typical gpu problems. Stuck on boot screen loading video drivers. Did a diagnostic reflow. Everything works good again. Changed GPU chip. Tested, ALL system parameters functional. A week later he comes back with other type of video problems: Straight after screen goes...

Okay... what a ride! The way back is definitely way harder then disassembling that thing! That plastic bezel that covers lcd and other layers is so hard to put back on and that sugar glass lcd is so freaking fragile that of course it cracked. Luckily I had an imac 27-inch from 2009 lying around...

No Title Okay I made some progress and ripped the screen apart so far without casualties i think. Before I resolder the backlight connectors and put everything together could you please confirm that these are the ones we are talking about (see picture attached). I suppose you were referring to...

Alright, sounds like hell but ill give it a shot!

Hi there, Sorry if this is off topic question but maybe you know this problem and have an easy solution. I have Thunderbolt Display 27-Inch here that goes to black screen randomly anytime between 15 minutes to 24 hours. Reconnecting mini display cable solves the problem instantly but still the...

Orange light on Magsafe with and without battery. PPBUS_G3H 1.76V PP3V42_G3H 3.42V q7100 getting hot U1000 getting hot Replace Q7100?

Hi Duke, Yeah that machine has a little history because it had signs of previous intrusion. When I asked the guy what has been previously done to it he said that he had keyboard replaced before due to a minor liquid spill. That was about half a year ago according to him. I did not see any sign...

Got a second board with exactly same problem 820-3462 and likely there is a schematic and boardview for this one. So gonna start trouble shooting that one and hopefully its the same problem on both board. But if you already know this problem and have a solution I would appreciate if you help me...

Hi there, Guy brought this board. Said he had some sort of audio adapter connected to left USB port and when he pulled it out his mac shut down and would not boot again. I couldnt find a schematic for this board to start troubleshooting. Does it exist? If you have please share. Magsafe goes...

Hi Louis! No I did not remove that short because after injecting 3.42V on pin 2 of L7095, U5000 aka SMC started to heat up and my Fujitsu skill is not high enough to attempt an SMC replacement. I need to farm some easy component replacements first ;) Thanks anyway. Better luck next time.