Hi;
I just completely rebuilt my Cinematronics Ver. "A" monitor in my Space Wars project and the 2 pots, one for the screen and the other for the HV adjustment, do nothing.
The HV is 24.5kV and cannot be lowered or raised.
The brightness control does nothing either.
Another fact, the spot killer does not work.
I replaced all the components listed in the Cinematronics FAQs' and also most of the resistors and the rest of the caps as well, along with the resistors in the neck wiring.
I tested all the remaining transistors before the rebuild.
I checked the schems and thought that maybe IC7 was the cause but after replacing that, still the same....
I checked the CRT with my B&K and it shows that the CRT is functioning correctly (no shorts etc) and has good emissions but the CRT takes a very long time to warm up and the display, when it come up, is dim and washed out. I get a couple of bright dots but in general, looks poor.
Has anyone had a similar problem that they would be willing to share?
Thanks
Jeff
I just completely rebuilt my Cinematronics Ver. "A" monitor in my Space Wars project and the 2 pots, one for the screen and the other for the HV adjustment, do nothing.
The HV is 24.5kV and cannot be lowered or raised.
The brightness control does nothing either.
Another fact, the spot killer does not work.
I replaced all the components listed in the Cinematronics FAQs' and also most of the resistors and the rest of the caps as well, along with the resistors in the neck wiring.
I tested all the remaining transistors before the rebuild.
I checked the schems and thought that maybe IC7 was the cause but after replacing that, still the same....
I checked the CRT with my B&K and it shows that the CRT is functioning correctly (no shorts etc) and has good emissions but the CRT takes a very long time to warm up and the display, when it come up, is dim and washed out. I get a couple of bright dots but in general, looks poor.
Has anyone had a similar problem that they would be willing to share?
Thanks
Jeff
