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I recently brought my Lisa 2/5 back out of the cupboard to have a tinker during lockdown. Unfortunately after a few minutes the contrast goes very dark and the image starts to shrink on the right hand side. I haven't dared to leave it on long enough for something to go bang... The BU406 is...

I was in the process of cleaning and recapping an SE/30 logic board which had been subjected to a battery leakage.  I've checked and rerouted all the rotted traces (totalling about 15) between the RAM, ROM, VROM and GLU but when I was satisfied enough to attempt a boot, pin 63 on the ROM burnt...

Inspecting the Profile power supply board, I noticed a very burnt resistor that had cracked into two pieces. I'm having trouble identifying its value. Can anyone help me out? It looks like Brown-Grey-Orange-Grey-Brown? Thanks 

I recently acquired a 5MB ProFile drive in an unknown condition for use with my Lisa.   I promptly replaced the power supply caps in hope that the drive would be operational. Powering the system on resulted in a high pitched whine but nothing else, but when I disconnected the internal data...

Good afternoon all, I have acquired two Mac Plus units of which neither want to boot. I've started with the usual logic and analog board cleaning and recapping to no avail. The most promising combination of boards only achieves a white horizontal line accompanied by noise from the speaker, as...

Hi Everyone, I recently acquired a Mac Plus with a temperamental analog board which would only display a picture briefly whilst being tapped on the left side. I tracked this problem to a failing flyback which I have replaced, but I now get horizontal scan lines across the display which I...

I recently bought and repaired a Mac SE - but whenever it boots, about a third of the screen is blurry. I assumed it was a logic board problem, but testing both the SE board in an SE/30 (which worked fine) and the SE/30 board in the SE (which produced the lines) revealed that it's actually an...