C= 1960 monitor schematic needed

[obitus1990]

I am in need of schematics / service manual for the 1960 Amiga multisync monitor. I've had no luck finding one online to assist me in fixing my dead one.

Thanks!

[gordanian]

Hope this helps! (see link below)

[obitus1990]

I'm currently recapping this monitor, so I compiled a list of all 54 electrolytic capacitors on the chassis and neck board.

Hope this helps anyone else trying to bring one of these back to life.

Commodore 1960 MultiSync Monitor Capacitor List

[obitus1990]

Fixed! After 6 years of being dead, the 1960 lives again. I replaced all the caps, HOT, and flyback, with no change. Reflowed a few suspect solder joints, but it was still dead... you can see the SMPS was shorting based on the power LED pulsing like it was resetting constantly and any measured voltages were on and off. A slight ticking could be heard, too. Ultimately, I found a shorted diode at D805. I replaced it and boom, I have high voltage and an image on the screen! Adjustment of B+ to 86V was done and the screen/focus controls were dialed in. Glad to finally be able to put this monitor back into its case.

[intric8]

@obitus1990 dude that is f'ing AWESOME! Some day you could follow in the footsteps of Ray Carlsen himself. (Wish you lived in WA state!) =)

Congrats - that's simply tremendous. What a way to get started for 2024!

[obitus1990]

Thanks, Eric. Ray Carlsen is irreplaceable, IMO, in the C= scene. I hope someone's able to fill his shoes when the day comes...probably won't be me, I'm just an amateur

[gordanian]

My previous post link had recently been broken. So posting again for anyone needing it.
https://drive.google.com/file/d/1tkakpZ ... p=drivesdk

[EzdineG]

Fixed! After 6 years of being dead, the 1960 lives again. I replaced all the caps, HOT, and flyback, with no change. Reflowed a few suspect solder joints, but it was still dead... you can see the SMPS was shorting based on the power LED pulsing like it was resetting constantly and any measured voltages were on and off. A slight ticking could be heard, too. Ultimately, I found a shorted diode at D805. I replaced it and boom, I have high voltage and an image on the screen! Adjustment of B+ to 86V was done and the screen/focus controls were dialed in. Glad to finally be able to put this monitor back into its case.

Great work! Sounds like persistence definitely paid off. One of these days I'll put some time into this arcing 1701 of mine. It has a great screen otherwise.

[obitus1990]

I found some time to connect the monitor to my A3000 today. Overall, things look good, with a couple exceptions. The edges of the screen are exhibiting what I think is barrel distortion at the edges of the screen. I'll have to go back to the manual and see how to fix this with the various controls on the board itself, if it's possible. But, more distracting is the banding I see in the center of the screen. Any old CRT techs know what this would be caused by and how to fix it? It can be seen in the angled photo, as it's hard to get CRT photographs. The pointer is in the area in question.