Flutter on frame on switching on which gradu- ally turns into frame slip downwards which gradually increases to downward roll. Frame hold is hard over on maximum resistance.
ECH35, oscillator, EL33 frame O /P, EB91 sync
sep, and EF50 sync amplifier have been changed as well as frame hold control. 1 have no circuit diagram for this receiver and would be very glad of assistance in this matter. -C. Gavin (Hounslow).
There is a 390 KS2 resistor wired in series with the frame hold control to the ECH35 triode con- trol grid. This has probably increased in value
and should be replaced.