Recent content by pilehave

Good news - it lives (somewhat) :) I socketed the SRAM (UC4 and UC5) and replaced one of the SRAM chips in the board with a "new" (NOS). And that actually seemed to fix the problem. I have attached some pictures, one with how the screen looks without any SRAM, one with SRAM in socket UC4 and...

I have tried taking pictures again, this time with the PET Diagnostics from Tynemouth Software running, it alternates between different screens, but mine looks a bit out of order, compared to https://www.tindie.com/products/tynemouthsw/pet-diagnostics-module/ ;-) I'm still waiting for my EPROM...

Hi I am in the process of fixing a CBM 4016 (PAL) that I recently bought as defective, and I need a little help on how to proceed from where I am now ;) Machine has been stripped and cleaned, visually inspected and while some legs on especially the TTL-chips were corroded, no visible damage...