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I took a video - here - can anyone diagnose why? I've recapped both the analogue board or logic board. Anyone know what would cause it to do this? cheers

Hi Everyone I was working on a LC575 logic board and foolishly I didn't actually test it before I started replacing all the surface mounted caps. Anyway I finished my tidy job, put it back in the unit and it doesn't power up. I put in a color classic board and it does. So, I noticed that I...

Hi I've acquired a IIcx in lovely condition. It powers up but no chime and no video. I notice the ROM sim is missing and am guessing this is the issue. I have various other compact macs laying around as well as a bag somewhere full of left over ROM or ROM-esque boards. Can anyone share a photo...

Hi I have an SE and an SE/30 and I'm using both complete units to switch components to try and home in on a few different problems. SE has large black and white rectangle checkerboard. SE/30 has a single, bright horizontal line on the CRT. SE/30- I'm thinking, reflow all the solder on the...

Hi  I have a multitude of faulty analog boards. On many of them the voltage is too high or too low and I think it's related to the trim pots on the board - because some of them do nothing at all. BTW these boards have been entirely recapped by me. I've done about 20 of them so I am familiar...

Hi I've got a SE/30 and the clock battery had started to do it's worst. I have got the lion's share off and I believe most of the chips can be cleaned and resoldered. However there are two tiny rectangular blocks, each with 3 pins - perhaps transistors. One is completely gone destroyed, but...

Hey everyone I'm still trying to work out why one of my analogue board is giving out low voltage. That saga continues. I bought a second working machine in order to restore and then use as a swap machine to troubleshoot with. I tested all the voltages and it boots up with the chime and disk...

Hi Everyone I've been gradually self-teaching PCB repair and getting better each day. But I'm struggling with my Mac Plus analog board (630-010B) I have replaced all the capacitors, except C1 (sometimes labelled C2, which is the unusual 3.9uf bipolar cap, which I have taken from another...

Hi There I am sticking my toe in the water here to see if anyone here is in the UK and is proficient at soldering to recap SE/30 / Classic / Color Classic boards? I'm a complete dunce and would happily pay someone to do a good job. Shipping to the US just isn't cost effective... Thanks! Alex