Quote:
Originally Posted by wa2ise
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. |
There's about 20 volts p-p across the diodes so a 1N34A or 1N914 should be OK. I'll give both a try.
I also picked up a replacement 1N270 for the video detector. I haven't installed it yet though because it's a bit hard to get at.