[n9vu]

Hi Ron,

Thanks for the advice, and thank YOU Chuck, too. I should have used my experience to answer this question as well. I have a model 70 with the same past symptons as the set you mentioned, and resolution was simular to the point of strong good reception without touching the tube grid cap.

One question but I'm not too clear on this. How do you check conductivity across the coils for good or bad? Also I have a 50 chassis (non working). Do you think I can salvage the coils off of that chassis if need be?

As usual I thank you for your answering and advice.

Hi Gary

What Chuck said, PLUS:

Check and clean the tube socket contacts. You may have to carefully tighten the metal "fingers" that contact the individual tube pins on each with a pair of needle-nose pliers.

I just finished working on a Model 50 yesterday. Upon initial power-up it had the classic symptoms of a bad 1st RF coil - very poor reception unless you put your finger on the 1st RF tube grid cap. Pulled the coil and it was good! Then I noticed that wiggling the tube made the set try to work correctly. Cleaned and tightened the tube socket contacts and VOILA, proper reception.

On your set, I would suspect the oscillator circuit first, chiefly the oscillator coil.