RCA T-120 in failure mode!

[Ralph S]

Hi guys. Attached you'll see a picture of the onscreen effect of a failure which started out of the blue after 3 weeks of 8 hour days of perfect operation of my T-120. The set has been completely recapped and all resistors in the horizontal and vertical sections checked. The B+ and B- are within 10 volts of being dead on with 115 vac and about 1.7 amps input. The 2nd anode voltage is about half of what it should be (~5kv) and the picture (in spite of what it looks like here) is very dim as one would expect. I've not had a chance to scope out the Hor Osc (6SN7, both halves) or the Hor driver yet, but I suspect things are normal there. No smoke anywhere - all caps and electrolytics are cool. I'm suspecting either the yoke or the flyback may be preparing to sound a death knell. Anybody seen this symptom before?