A few weeks ago I'd managed to get a raster on the Admiral 17T1. My grandsons were impressed and thought it would be cool if we could watch a movie on the TV.
I got ready to make some more progress on this project, but now the raster is gone. I have nothing on the screen. I spent the last two days checking the voltages to compare with the data from a month ago. There are a few changes, but this in particular one caught my attention:
What happened to my 300 volts at pin 2? I've spent most of today blindly looking for a problem; checking resistors, retesting tubes, looking for open circuits, playing with controls. Audio is still OK and I get a good spark from the 1B3 cap. I've done everything I know how to do, and now I'm seeking mentors.
These are links to the schematic and 3 pages of my most current voltage data.
https://picasaweb.google.com/lh/phot...eat=directlink
https://picasaweb.google.com/lh/phot...eat=directlink
https://picasaweb.google.com/lh/phot...eat=directlink
https://picasaweb.google.com/lh/phot...eat=directlink
I'm grateful for any help I can get here. To show my appreciation I'll soon share my technique for repairing broken vacuum tubes.
- Winky