[criageek]

Thanks again jcassity - I REALLY hope your suggestion (possible carbon trace) is not true, especially for the 7F8 (mixer/oscillator) or 6BA6 (1st IF amp).  They are both buried under the function switch on the tuner sub-chassis and would be impossible to service without removing it, especially the 7F8.  I did do tube resistance measurements in the past and the only unusual readings I got were on the plates of the tubes that are fed by the B+ line(s).  In each case the expected reading is in the 180k - 300k range and I read infinity (with a digital meter).  I would think that I would read much less rather than much more if there were a carbon trace problem.

I'm sure I do have an AC component across R127, but if I remember right it's only about 200mV.  At this point I feel like I may be chasing my tail and I don't want to do that.  I did install the 5W resistor, but I'm going to go a step further.  I ordered a chassis mount resistor and will install that.  There may still be a problem in the circuit, I don't know.  But at least R127 will not be a failure point, and the heat it generates will not cause a failure.  So if there is no problem in the circuit it will be extra protection.

I have a possible lead on a 47-1230...I may pick that up so I have a chassis to compare to.

Thanks!

Rich