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Have and LC 580 with proven good analog board. Logic board was recapped by someone else and it was not pretty. Trying to trace it out but hoping for a schematic to help me. The computer does not power up with this logic board. I have struggled with a few of these boards with the edge...

The battery took out the switches on the logic board. Are they common and avaible to purchase? the buttons in the case are fine but it is the switches on the board itself that I cannot find. I have another battery bombed logic board that uses the same switches but they really look...

Had a working 6100. I recapped and ISO cleaned. Now will not boot. I am probing what I believe is the egret chip and get signal all around except nothing on pin 7. A schematic would help or someone knowing where that pin goes. I have double checked all the caps I changed and am not finding any...

Repairing an LC logic board with a bad 15 pin video connector. Can these be sourced or do I need to rob from a bad board? The only bad board I have is for a Quadra 700. Visually it looks slightly different. Do I need to find a bad LC board? Computer booted and runs fine. I was planning on...

Reworking an App IIgs I bought awhile ago. Never was able to get the GGlabs memory card to show more than 2MB. I have the ROM 01 version of the computer. Is that perhaps the issue? The site does not indicate that being a problem. Other than that the system works fine. Any thoughts on...

Is there a good video out there for repairing the sticky parking problem on a SCSI drive? I got multiple drives to read following @techknight video on temporary repair but have not found something that shows me how to fix the problem more permanently.

I have a Color Classic with a Performa 550 board in it. What would be the best system software for it. I also have the straight up Color Classic board. Same question. I am putting a Blue SCSI in and as it needs so much assembly to get to the HD I would like to have it ready to go before...

Took apart a PowerBook 5300 and after reassembly I found this on the table. The laptop appears to be working so I have no idea if this came out of it or fell off something else I had been working on. Any ideas? It has no traces coming out of it. Just two switches and a cable plug in for it...

I am needing to repair C149. I see where it connects to what the schematic says is pin 32 although that is not what I count it out to be. But my big issue is the via. Where does it go? I checked the back and it seems to be a dead end. There is a test point referenced on the schematic. I know...

Got a Blue SCSI, V2 with wifi up and running. I can get on internet if I plug in the USB connector to the Pico but not if I just use the SCSI power bus or even if I plug in a Berg connector to the HD power supply connector. I would prefer to not run a USB cable into the computer from the...

Getting RAM error on original Macintosh. Not sure where to get compatible replacement for MT4264, no suffix listed. First experience so I want to make sure I get the proper RAM. Any help for a newbie is appreciated.