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It wont recognize the battery in any way. What should I check?

Both were changed with known good ones. Exactly, it takes time for the charger light (orange for some reason) to appear. Sometimes only 10 seconds but most times a few minutes.

Another weird thing is that sometimes when I start it up without battery it only sees the external GPU.....

It is the same. AppleMuxController crashes. Checked ram slots and sticks. Same. Run ASD. Only a battery capacity error, which I guess is irrelevant. When it crashes usually it does also shuts down the machine. Then it wants to start again. But after a second it shuts down. Then this repeats a...

The green light comes on and it powers on but all this happens with a few minutes of delay after I put it on charger.

We chang the thunderbol connector and everything good! Thank you!

Sorry. After another magsafe board.

Board got on over-voltage because the non original charger exploded when it was in use. It takes some minutes for the orange light to appear. PPBUS, PP3V42 and ACOK all are normal. Any idea? Change ISL maybe?

Yes, it was replaced with a standard non tantulum cap.

Board is ths one: https://www.rossmanngroup.com/boards/forum/board-repair-troubleshooting/6532-820-2850-a-gpu-panic-and-green-screen Continued here... Reballed MUX. It solved everything. It did work for a month or so now kernel panics re-appeard. Even worse than before (now with bot GPU. and...

Checked those. Voltage was alternating between 1.8 and 8. So it came to me that the battery might cause it. Tried with another one. And it works. Thanks.

Board will not recognize and charge the battery. Any suggestion?

Picture distorts and blinks. But I tried flexing the cable and found a position where it works correctly. So this looks like a contact issue. It is possible to change the thunderbolt connector?

I was not totally accurate. Thunderbolt is working but image is distorted etc. Still no chance to fix it?

Board only had PP3V42. Changed ISL. Then PPBUS and ACOK returned but still no green light. Board looks almost perfect, no sign of corrosion as far as I can tell. Any suggestion?

No Title Checked voltages. 24V is present. No voltage is going out to LED cable. But I do have a strong clue what might be the problem. There is sign of burning on the top part of the board where a mosfet and a diode is located. Checked the diode and it is shorted. (Not sure about the mosfet...

Board had a little liquid damage. Thunderbolt is not working.

Any idea where should I look?

No Liquid damage. Tried the ram slots with multiple sticks of good ram. Most of the times only 3 beeps. Sometimes it will start with the bottom slot only but on boot kernel panic followed by restart. First conclusion was that both slots went bad (came across a case like this some time ago). I...

I came to the same conclusion. Replaced it, now works perfectly. Thx. ;)