Quote:
Originally Posted by Electronic M
I wonder if he could have kept the set upright with the CRT in while adjusting the oscillator. And accomplish that by hanging the tuner corner of the chassis off the bench and crouching below the bench to access it from the bottom.
If alignment is off it's possible there may have been interesting changes if it had signal injected into it.
I agree with the assessment that the signal source may be weak and or the set may have gain issues.
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The tuner oscillator screws are all available from the front of the chassis. Chris says he has the oscillator at 93MHz although that still has to be fully ascertained.
What would show if the set is healthy is to see the snow on the screen and rush of noise from the speaker with the contrast and volume controls fully advanced.
Going back to the suggestion on the IF coupling capacitors, the sound take off is before the video IF.
Also this set has no agc so the contrast control sets the RF and Video IF gain. The snow and noise from the speaker on channel4 with no modulator will tell us if there is gain AND if the oscillator is close due to the rd stages tracking.