[ms660]

Hard to say without being there, chicken/egg etc, basically it's flywheel sync, line oscillator>line output>sawtooth to phase detector>phase detector output>reactance stage>line oscillator.

Sync separation etc is within the IC. The phase detector is gated to operate during line flyback, the reference sawtooth from the line stage is at pin 2 of the IC as is the control voltage for the reactance stage, the gating pulse from the line stage is at pin 3 of the IC. The sawtooth is obtained by integration of a pulse from pin 2 of the the line output transformer, the gating pulse is obtained from pin 6.

Might be worth checking any relevant plug/socket/connections and work you've done etc, if ok I would do some voltage checks.

As said before there should be a procedure in the manual for setting the line oscillator frequency, I would check that out as well.

If that's any help.

Lawrence.