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Which voltage rail of the PSU is shorted to ground? Are you sure all of the capacitors are oriented right way ? Is your motherboard known good (tested working)?

I had to recap a 8100 way back in 2015 when it was locking up/crashing in system. None of the caps were leaking, but they tested mostly out of tolerance (high ESR)

Vertical line is caused by failing LCD panel, so nothing will fix it, except replacing it with a different panel.

For much faster navigation and search I cleaned up (straightened) the scanned schematics that were provided on this forum, and did the OCR, so you can CMD+F (or CTR+F) the document. As I said, the Sawtooth mainboard is quite similar to the Digital Audio one, but of course there would be some...

And at last, I managed to repair the logic board. Long story short, it was the SI4467DY P-Channel MOSFET that shorted from gate to drain (in layman's terms: from control input to the power input). I used the PM G4 Digital Audio schematics as a reference (sadly they are not the best quality)...

I managed to repair the power supply, it had a shorted tiny diode on the primary side. The Mac now turns on, but shuts off after 2 seconds. No sounds or any other stuff is present. I am testing it just with CPU installed, and nothing else. PSU is tested OK, as I ran it for an hour with load...

Hey, In the attic I found a forgotten Mac that I stored there almost 20 years ago - back in 2008 or so. As the title says it is a PM G4 Sawtooth (AGP graphics). I would like to get it going. The case is in really nice condition, with no yellowing going on, but it has issues: 1. Power supply...

I think the main reason is the spring that loses tension after 30+ years of upwards pressure.

Yeah, but perhaps the OP can restore the images by reuploading them on this forum. 2021 isn't that far away still.

Cool, but the images are missing!

I am sure there is a way to reset the BMS, but probably needs some special software or even hardware. Having such a large value, I think the BMS probably has encountered integer overflow so its capacity has "rolled over". Value of 65483 (mAh) is very close to 65536 which is 2^16. There was a...

Any possible way to fix this issue with my PowerBook G4 battery? It holds charge, but the capacity is reported wrong, therefore the gauge percentage is not correct. I tried charging and discharging it few times with no improvement. Thanks!

I can also confirm that I repaired multiple LCIIs that all did this. Every time the problem were capacitors. They are just bad. And the first one that I came across with this problem was back in 2011, so at that time the machine was "merely" 19 years old, this is the same age now a G5 iMac or a...

Those are standard DA7052A (TDA7052A in SOIC-8 package) from what I can see. I see they have them on Aliexpress and eBay...

Update: it has been now running flawlessly for last 6 hours. I only still need to sort out the battery issue. I was thinking of putting a CR2032 there, I think it will work, despite being 3V instead of 4.5V. P.S. For recapping, I used 25V rated caps for 12V rails and 16V rated caps for 5V...

Hello everyone, I just (almost) finished restoring Performa 630 which I got for €25 few years ago. Previous owner presumably found it in some abandoned building, along with a painted black Mac 512K which I also got. He cleaned it a bit and removed the leaky battery, but didn't have the right...

I am interested if anyone has managed to obtain the schematics (or perhaps a boardview) for G3 series of PowerBooks. I repaired lots of MacBooks and other Apple and non-Apple hardware in the last 10 years or so, and I do have every schematic for every Apple laptop from the PowerBook G4 on. As...

Very nice! I went through same steps on my PB 140 and 160 :) Mine had failing hinge mounts on the LCD cover, which was fixed with 3D printed bracket

I know, I recapped mine years ago, when I started collecting these PBs. But reccaping is easy compared to polarizer replacement... If NOS one was stored in original packaging, and never used, then it will be most likely still fine for few more years. Also I found that NOS units usually don't...

Thanks, you are welcome :) I wouldn't risk it as I don't know if it will work, nor if it needs to be oriented in a specific way (like 90 or 45 degrees off axis). Also I found some NOS LCD panels for about $100 few months ago (don't know if they still have it), so I'd rather take full panel...