Recent content by Bwana_fr

Missing capacitors is normal, I remove them to check some PCB tracks. I also desolder U7 & U8, to check pads and via under these chips. The area seems to be ok. I get +5V on the pin 2 of U8 (while in standby) and a ~1 second pulse on pin 26 of U7 when I try to power the computer using an...

Hello, I reply to myself. Bomarc schematics are not accurate. The +5VSB shown in the picture is the +12V PSU for the floppy drive. So this is normal to have them connected together. After a long investigation on the logic board, the problem doesn't seems to come from this part. More to come....

Hello bibilit, Merci pour la réponse :-) (I'm french too). I made more investigations on the logic board and I spotted some potential issues and I have several questions: Can we trust BOMARC schematics for the logic board? If yes, using the schematics, I found some shortcuts with power...

Hello to everyone, This is my first post on 68kmla :) I recently acquired a Classic Color and I have some issues with the power supply. I recapped the analog board, and changed opto-couplers. After recapping I've 4.85V on the ADB connector. When I try to power using the keyboard, I hear a...