Fixing Zenith CCII Avante 25JC49

[Alex KL-1]

Originally Posted by drwatson32

Like a nutjob, I snagged what I believe to be the correct paperweight to go with my giant paperweight. Joking aside, I remain committed to finding the tripler and getting this set working again. Here are some pics for the curious. I thought it was kind of funny how the PCB interfaces with the buttons with the same push-on connectors as the modules in the set. I can hear the power button, channel hi, zoom, and volume buttons. My phone registers the tones as being upper 8khz to mid 9khz. The other buttons seem to do something as my mic gets overwhelmed and shows 100db of all frequencies when I hold the remote right up to the mic with buttons pressed. Might be outside the response of the mic. I won't be able to test beyond this till I can power the set up again.

It's half tempting to fire this up again to see if I can witness what exactly went. I hate to break more things. Maybe worth disconnecting the flyback from the tripler to isolate that as being problematic? I have feelers out for a tripler but so far no luck.

Side note, I get 10ohms across the oil capacitor, but with it still in circuit.










Here, I noticed the ground strap from the aquadag cover (is that what we'd call it?) to the power supply board was baked by an adjacent wire wound resistor. The insulation is crispy now, but I pushed these apart from one another. Guessing this isn't of much consequence, but thought I'd throw that in here.

Intriging, this remote control is sonic (audible) or ultrasonic system? In case of ultrasonic, the ultra small MEMS mic from cellphone can be confused with high amplitude ultrasonic signal.