Motorola ts907 low hv

[Electronic M]

Originally Posted by timmy

I thought the whole screen goes up and down not the image alone.

Unless you have vertical underscan you won't see it move without video, and even if you do it's possible the osc will have enough jitter free running that you won't notice.

That said sets with electrical centering control typically run a DC current through the yoke to control centering. The pot it's self could be bad or the circuitry feeding it. Before declaring it bad though, I would definitely confirm operation with video fed in.