The Mac Portable regulated power supply unit is complete. I designed and printed a box for the electronics (everything hot glued) and it all tests good. IMG_3674.jpeg The built-in ammeter is useful as it shows when the system is charging the battery and when it reduces the CPU clock too. When suspe...

PhilC wrote: ↑Fri Apr 12, 2024 2:22 pm

rubber_jonnie wrote: ↑Fri Apr 12, 2024 2:17 pm

True.

Doesn't it need USB C to charge properly though? IIRC it takes 15v when charging.

I have no idea and have another switch anyway

Okey Dokey

@rubber_jonnie I think they had dropped it with the USB plug in and it landed right onto it. It did have the screws too but obviously that didn't help. I still have it and guess I should get round to putting a 5V power supply plug on it at some point :D True. Doesn't it need USB C to charge properl...

Also apparently the P13USB IC can also cause charging issues if dead, so I think I need to check for shorts round that too.

PhilC wrote: ↑Fri Apr 12, 2024 2:03 pm I had a switch given to me to repair which had a faulty USB socket. It turned out they'd been that rough with it that it broke all the USB tracks off the board.

Wow, they'd need to be pretty rough with it to do that!!

At least on the Lite they have the USB port screwed to the chassis.

stephen_usher wrote: ↑Fri Apr 12, 2024 1:58 pm Shorted to ground as in internal failure?

Yes, correct.

M92T36 removed: IMG20240412135713.jpg And the short, which was via the 4th cap up on the LHS of the IC, has now gone. Having watched The Coder do a lot of Switch repairs, I'm honestly not surprised, it seems that these can go if the USB C port gets damaged, as it was. Toothbrush for scale, I'm out o...

How far onto the board is the power getting now? I see 5v at a test point on the other side of the USB socket, and that works either way the USB connector is plugged in. However, looking at the board with my thermal camera, the charging control IC, M92T36 is getting hot, enough to evaporate IPA, an...

While you've got it open? https://www.ebay.co.uk/itm/126347797875 Homebrew only of course Well the port swap went fine, but I'm still not getting charge, so until I can get power to it I'll not be doing much else. Annoyingly the flap on one of the connectors pinged off too, so I need to get one of ...