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So I got it fully working but this is a little weird. Brightness wheel doesn't do much to fix, was this caused by removing the RIFAs? 2nd picture shows stretching/bulging at sides of screen

I'll definitely keep that in mind! I don't plan on doing video stuff with this so I'd totally be willing to sell the board. I found the broken pieces of the capacitor that exploded, it seems to be 150ųf 10v or at least i think that's what it says

So I got a Macintosh Plus and it immediately blew its RIFA when plugged in. Great start! I removed C33, C37 and C38 and attempted to boot it. I got a sound, and a drive, and the more peripherals I plugged in the more sounds I got, but no screen. I plugged in the mouse, switched it on, clicked...

Ok just gave it a REALLY good clean, still doing the power cycling thing. Not sure what else to try except maybe a new screen, which i don't think ill be able to get unless I find another 140. I'm still open to ideas though!

I'll go ahead and do that, im relieved its not the ribbon cable though at least, not sure where id get another. I cleaned a little around the caps but not anywhere else

Just did all this, got the chime all the way until display, do it must be there. I'm gonna check the ribbon cable pin by pin with a multimeter, so that should be fun

I tried it, it didn't change anything but good thinking! It would've made sense at least. I also checked the display cable, seems fine. Just gotta keep poking around.

Ok I've been kinda trying everything. I noticed it would boot if I disconnected the main cable, and i actually got it to do the startup sound by putting in the cable at an angle, so i know the issue is in the top half. I recapped the inverter board, replaced the cmos battery, and actually found...

So I did the recap, and now this happens: Really not sure what to do here, help appreciated again, sorry for being totally incompetent with these things.

Ok cool! Thanks for checking. I ordered the caps so now I just gotta wait a few days.

Tested f1 fuse, it's good! The battery fuse however if it is a fuse it's bad, not getting any continuity through it so maybe it's something else. I'll just leave it unplugged cause that's how it was. There seems to be a little corrosion on the battery terms so I'll dissolve that and get to...

Thank you for the tips! I'll give everything there a go and see what happens. Also, attached to the place inside the battery slots into is a small component, almost looks like a piezo, and when I first got the mac it's cable was disconnected. I reconnected it but it didn't seem to change much...

I ended up ordering an actual power adapter for it and it's quite confusing. Screen still being weird but the noise is gone. Here's a video with more info, if anything looks familiar to you I'd like to know! I'm stumped for the time being.

Got a powerbook 140 for free and while it is in very good cosmetic condition other than missing the port cover, it has some issues. When I plug it in (I'm using a universal power supply with the different settings and stuff you know the ones) and turn it on it makes a loud grating noise and the...