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I am working to repair a M5126 backlight Mac Portable. Recapped, repaired a few traces and I have the machine doing a good happy chime but when I connect an external (with power and correct INI file) or an internal bluescsi (portable version) it will still give me a good happy chime and then...

I am asking if anyone might have info on the transformer that is on the Macintosh Portable Backlight inverter board. See the pictures. I am hunting for an inverter or just the transformer to repair mine. Thanks for your help.

A few years ago (almost 10 now) Downtown Doug Brown created the ROM Simm Programmer to allow programming of rom simms all at once in a socket. This became what today is the ROM-Inator II simms and others that are seen on many sites. Big Mess of Wires also made and sold the programmers for some...

I have a Mac 128K original, not modified in any way, that I just fixed and is booting up and all. The mouse works with movement but the button will not do anything. I know the mouse is good as I use it on another machine. I have tested the DB9 port, the RC pack is good, and no trace damages...

After many days work and a hunch that the rom on the IIvi is bad, I can confirm it is. I removed it and took the rom from a working board and soldered it on the non-working board and guess what? Booted up and worked fine. Now I am in the hunt for a IIvi, IIvx or P600 rom to save this IIvi. If...

Looking for some guidance on what to check etc. I have a IIsi that will only boot when it has simms in all 4 slots. Remove the simms I get chime but no boot. Note this logic board has 1mb-8 chips on board. Could this be the issue?

After having a broken gear for the above eject motor and not able to find a gear for it, I set out to make my own. First CAD design and first endeavor into 3D printing as I just received my Anycubic Photon Mono 4K. A fellow member of @mitchkramez stepped in to help with the details as I am new...

Well now that I have the chime and happy face after a trace repair of pin 15 egret reset and pin 5 on U14 memory 5v missing. It will start the boot get to the welcome screen and lockup. Stays there. Anyone have any ideas what to check, try etc?

I am hearing some talk that a LC II rom could work in a classic II. Can anyone here confirm or comment on this?

After cleaning my IIc board, I get this issue. I swapped the rom, cpu, mmu, iou from this board to another and it all works. The issue is related to this board and/or items on the board. I don’t get to test screen. It worked before the good cleaning. First time with brush and IPA only delicate...

I am working on a classic II and have read over the posts here. Not able to determine what could be the issues on areas to check and what to change but I am not getting correct voltages from the analog board. It’s fully recapped. I am getting 10.28 instead of the 12 range. And for the 5v I am...

When removing the battery holder, the negative side via completely came out. On either side of the board there is no visible trace of where it goes to put a trace repair or wire. I assume it’s inside the board so i can’t do much with it. Is there a contact point somewhere on the board I can run...

Evening to all. I have an Apple ii+ and the a2m2010 green monitor. The monitor had vertical collapse issue so I recapped it complete with a kit. All caps replaced along with IC601 that was under voltage. Now 601 is correct voltage I think. Someone can provide what it should be to confirm...