Next up is an interesting Picasso IV Zorro 3 board that I’ve worked on earlier this year. A friend gave it to me for repair with the comment: it doesn’t do anything. Symptoms: no autoconfig (not visible in earlyboot) no video Diagnostics So, after visually looking around the board, I noticed some bad solderings on […]
Received an Amiga 1200 to fix. Someone tried to do a recap on this machine but failed, pads are gone, some are loose, plastic melted.. not a very good job.. Beside those issues the “repairman” sprayed the board with “Flux SK10”.. why ?! The whole board is sticky.. The keyboard fpc top cap even […]
Amiga 600 which was constantly rebooting. I got this machine as a repair, someone before me tried to do a recap to the machine.. After that it was not working anymore. First thing I tried was to replace the 555 Timer (U14) and the C612 Capacitor, because this is common problem on an Amiga 600. […]
Black screen on RGB output can be a broken E263R Ferrite Bead (FB200). Monitor won’t get into RGB mode if there is no 5V on pin 23. I have seen several Ferrite Beads that were broken, and have a much higher resistance (impedance). After replacement 5V is restored and we have RGB signal again.
Amiga 600 with HD boot problems. This board had a recap because it leaked from the caps. Some electrolyte leaked under the IDE header and a corroded the pins. Sometimes after reseating the IDE cable it booted, but mostly it didn’t boot. I removed the IDE header cleaned the mess underneath it and placed a […]