Motorola VT-71 K Chassis Restoration Issue

[timmy]

Originally Posted by Chris K

I do have some 1N4148 diodes and put one in...still no change...tried both channel 3 and channel 4 signal output.

Get any sound ? Are all the tubes good?

[Chris K]

Originally Posted by timmy

Get any sound ? Are all the tubes good?

All the tubes tested good on a Seco 107. Yes I get sound that responds to volume changes specific to the channel I'm feeding through so if I'm feeding the crosshatch into channel 3 and I flip the TV tuner to channel 4, the sound disappears. Mind you, as I posted before, my Leader LCG-396 does not produce an audio tone along with the video pattern but, something is getting through to the audio...a high pitched dirty tone that goes up and down with volume changes and fades in and out if I move the fine tuning. I have moved both the channel 3 and 4 adjustment slugs around a bit but not so far I would lose my frame of reference of their initial position. At most it was half a turn for each in either direction. The audio sound faded in and out when I moved them and then returned them to original position. No picture or a hint of a picture in there. I've also played with the horizontal and vertical hold controls. Still, no image.