|
ok replaced same issue. so I guess its time I broke down and
1) double check the caps in the sweep circuit, starting with the cat bypass on the horz osc (30uf part of the can cap)
2) check the resistors again (I think I did this based on the sams pin resistance readings already)
3) go thru the full setup routine of the Horz and HV per the service manual
(check HOT current, check HV)
4) get the scope out and look at the waveform on the osc, maybe trace from the plate of the horz to the grid of the HOT to see if any oddness takes place.
I realize I need to get the linearity done 1st before any more messing about with the purity/convergence.
prob should check voltages while I am at it in the sweep circuits.
|