24" Magnavox b/w combo gets a new crt

[Adam]

This tv was having problems again. It had weak contrast, staticy sound, snow in the picture. I figured it was a very dirty tuner, because I had been needing to shake the tuning knob lately to get a good picture. So I swapped the tuner with another one. No difference.

I figured the trouble had to be either in the tuner or the IF. So I started checking voltages in the IF, and that same resistor in the plate circuit of the 1st IF tube that had went bad 2 years ago burnt out again. I don't know what's causing these to go bad. I checked the 1st IF tube, tests good, no shorts. And it's not like it went bad immediately, it took 2+ years of occasional use. Anyway, I replaced it with a 1 watt this time.

I also found out what I thought were dirty tuner troubles were actually the wire connecting the antenna to the tuner breaking off on one side where it attaches to the tuner, resoldered it and it works better.