Motorola ts907 low hv

[Yamamaya42]

Originally Posted by timmy

I can see how it would affect the sound which I’m not worried about sound and how is that it would kill the third IF it should just kill the audio. And there is supposed to be a .4v source coming from the tuner and it’s .13v that’s not right

.4v, normal operating conditions.

no video is not "normal operating conditions", so until there is normal operation of the RF-IF to video input, and the AGC feedback loop is normal, the .4v will always be abnormal.

The sound det is taken from the plate 3rd If, via C43, if V7 is not in the right state, it can clamp down on it.