Philco 51-T1601

[bigaudioal]

Well after working great for a few weeks (after full recap, all resistors tested and replaced as needed), this set gave up the ghost somewhere last night. No raster. Cannot hear the horiz osc running at all and the 6CD6 horizontal output tube is hot plating something awful. Not sure what failed. My lack of test equipment (well I lied - do have a scope, but no clue how to use it yet) may limit me in diagnosis. Don't want the set on with this condition so testing voltages is out. I did pull the two 5U4s to eliminate the B+ and run the set like that. Power transformer ok, all tubes lit normally then, including the 6CD6. Seems like the set lost horiz drive maybe. Or - dare I say, flyback pooped out?!

Anyone want to suggest how to try and find what failed in order of likelihood??? Or offer any suggestions of diagnosis techniques with no test equipment except a multi-meter and an cheapy cap tester (does not test under voltage). Schematic is here:

http://www.earlytelevision.org/pdf/p...sams_138-7.pdf