Quote:
Originally Posted by bandersen
I just went with a couple 1N4007 because I have a bunch on hand. The horizontal sync is definitely more stable now. I'll poke around for some 1N914s too. I'm curious to see if there's any difference.
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I'd use any diode that is suitable to use as a AM radio detector diode. Rectifier diodes may be too slow (in time) to "recover" (start or stop conducting) and have too much stray capacitance. The set may have better sync stability even more, with the detector diodes.
I thought I posted last night about the domino shaped capacitors, some are mica (usually good) and some are paper caps (usually bad). Maybe I hit "cancel" or maybe my linking to another site's images was bad or wrong.
Anyway, large uF class caps are usually paper, the pF class are usually mica. But horizontal circuits more likely use micas. Papers should be bad by now, so if the set works, they are probably micas.