Recent content by 3lectr1cPPC

I'd take it apart and see what blew, who knows, maybe it's something repairable. If not, then at least you know where the fault is and you could replace whatever part went bad in the future to get a working machine. I still think you should take a voltage reading from the charger if you can...

Check the voltages with a multimeter if you have one. If it’s outputting proper voltage it’s probably fine.

It could always be a different issue as well. It's usually caps, but it could be a bad connection anywhere else as well. If the caps are testing fine, that suggests something else at fault.

1.6mm long 😬 They are seriously tiny, you’re going to need tweezers and good eyesight to get them soldered in. Here’s the link I got mine from, but I don’t know if they ship internationally...

The image on that site shows through-hole tantalums, which won’t work to replace those. You’re going to want surface mount style tantalums, although I’d be careful about size. You’ll have to mount them at a different angle for them to fit since the original caps solder points are on one side of...

I recapped a PowerBook 145 screen with ceramics, you can see images of them on this thread where I initially had some problems. https://68kmla.org/bb/index.php?threads/powerbook-145-no-contrast-after-recap.39814/

I believe you’ve got some sneaky electrolytics there. The pads are both at one side, a giveaway of that. You wouldn’t be the first person to mistake those for tantalum caps. It looks like they’ve gone bad. You can replace them with ceramics, although they will be extremely tiny.

I would try to remove the hard drive. I’ve had a bad boot partition cause a death chime, but I still got a display so there might be move than one issue if the hard drive is the cause of the death chime.

There was a good bit of corrosion on the little ribbon connectors that connect each side of the display PCB. I suspect that may have been the issue on mine, so I would give that area special attention, along with the legs on ICs.

My 145's display didn't work at first after a recap until a VERY thorough (and careful) cleaning with IPA. If you can't find anything wrong with the cable, I would try cleaning up the PCB around the display until it's spotless. It also wouldn't hurt to clean inside the connector on the PCB where...

Oh well, I guess it was worth a shot. Keep trying things!

A bit of a long shot here, but try disconnecting the keyboard. It probably won't fix anything, but on my 145, I get a similar effect if I hold down keyboard keys. If I hold down any key and try to start the PowerBook, it does nothing. Then, if I release the key, I get a speaker pop, some screen...

Thanks, and yes! I'll check on them next time I have the 145 apart. I'm waiting for now because the hinge standoffs are so badly screwed (haha), that I'm not daring to close the screen again until I've got new 3D-Printed ones installed. I'm planning on replacing them ASAP.

Thanks! It still needs a lot of work to get fully working, but I’m just glad the hardest part is out of the way.

It’s ALIVE! Cleaning it up did the trick! My first successful Mac recap! Thanks for the advice on cleaning it @mdeverhart! Now, on to the next challenge: the trackball isn’t working. I believe the seller said it worked when they tested, so it probably came disconnected while I was working on it.