[time-nuts] HP5372A CRT schematics
Fellow Time-nuts, I have problem with a HP5372A, where the CRT failed and only shows a vertical line of compressed graphics. Obviously something is broken in the drive-side. So, does anyone have the schematics and possibly other service info for the CRT module? I can't recall seeing any schematics in the service manual, only module-level tuning. I am sure it is close to trivial to fix, but it becomes easier with a schematic at hand. As I recall it, it looks like a standard CRT module and to be honest, I am not very impressed about its functionality. Cheers, Magnus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP5372A CRT schematics
Magnus Danielson wrote: Fellow Time-nuts, I have problem with a HP5372A, where the CRT failed and only shows a vertical line of compressed graphics. Obviously something is broken in the drive-side. So, does anyone have the schematics and possibly other service info for the CRT module? I can't recall seeing any schematics in the service manual, only module-level tuning. I am sure it is close to trivial to fix, but it becomes easier with a schematic at hand. As I recall it, it looks like a standard CRT module and to be honest, I am not very impressed about its functionality. OK, a restless mind (mine) opened the box up since I was not going to get any real work done anyway. Just looking around for potential problems I found that a connector was suspicously brownish instead of normal dull semitransparent whitish plastic. Just juggeling the cable around and try it again proved that the connector was infact flakey and I could even see some heat-fluxuations in the air above it. Redoing the connector seems like the right thing to do and should be a quick fix. Sometimes just follow gut feeling and opening things up and have a look can be effective debugging. I think this explains the flickering width that I have seen on that display. I still want that schematic thought. Cheers, Magnus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP5372A CRT schematics
If it is a Sony with the non-fr4 board material, look for a hairline crack in the board with the flyback, the unit may have been dropped in shipping. Jim Cotton n8qoh Magnus Danielson wrote: Fellow Time-nuts, I have problem with a HP5372A, where the CRT failed and only shows a vertical line of compressed graphics. Obviously something is broken in the drive-side. So, does anyone have the schematics and possibly other service info for the CRT module? I can't recall seeing any schematics in the service manual, only module-level tuning. I am sure it is close to trivial to fix, but it becomes easier with a schematic at hand. As I recall it, it looks like a standard CRT module and to be honest, I am not very impressed about its functionality. Cheers, Magnus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
