[kx250rider]

I meant the service manuals with schematics, but the adjustments are in a supplement (very frustrating; not sure why Sony did that).

The sound problem could be either in the monitor on in the VTX tuner, but to verify which unit it causing it, just hook up the audio output from the VTX to any stereo or boombox with stereo inputs, and see if the sound is OK. You won't be able to control the volume from the VTX, but you will know if the audio is coming out correctly. The headphone jack has it's own volume control, so that might be dirty and intermittent as a separate problem. ALSO, if you're using the DIN cable from the VTX to the monitor, try not using that but just use a regular video cable and a pair of audio cables from the VTX to the monitor. That will eliminate problems with the DIN sockets or cable as possibilities. As far as the washed-out picture, I don't know why the comb filter would have anything to do with that, but I have to trust the other tech's opinion since I haven't seen your set myself. There IS a common washed-out picture problem on those, which is usually with one side of the screen too bright and washed out, and the other dim. If yours is like that, you may have a bad capacitor in the KX-2501 in the 200-volt line feeding the G1 or G2 of the CRT. I'd have to look at the manual again to verify the location and value of that cap, but I can do that if you need. I think it's a 10uF @ 250v electrolytic, and it is after a scan diode near where the flyback wires go to the sweep board.

Charles