[Jukebox-list] 1 channel out on Seeburg 222(SFHA2 amp) Found the problem.

[Jjmscf at aol.com]

Troubleshot the amp thias afternoon.With my scope I had clean audio right  up 
to the grid of V110,the last 12ax7 before the 6973s.At pin 6 it was extremely 
 distorted with pulses going negative off a flat line.Checked the 470k plate  
resistor(R208) Sure enough it was open.Also found the other plate resistor 
R210  (390k) had increased to 2.3 megohms.Funny thing is R151(390k) on channel 1 
 checks open too.Yet it had sound.If you listened closely to that channel 
alone  you could detect a slight distortion.I'm working on it now.Gotta stop for  
dinner.Gonna change some more that are out or on the edge of tolerance.If it  
sounded good before,it's gotta sound even better when I'm done.I'll post the  
outcome.
 
J.C.