cz101

just to follow up on this. Fixed the fader with DeoxIT CAIG MCL F5 Fader Cleaner. The headphone jack was defective and I replaced it with similar part from a Casio PT-1. Simple enough swap and easy access. The part is a Jalco 7 pin switch headphone socket. edit, this is the actual socket if searching for one yourself: https://www.dropbox.com/s/6xywgxctrdgkc39/jalco.jpg

thanks for that pianokeyjoe, solid advice. Will get the cleaning bits and report back. The last thing I want to do is approach it the wrong way and make it worse.

Hi, fired up my old HT-700 recently and while it all seems to be still functional (phew) the headphone socket and accomp (accompaniment) volume slider seem to have issues. On the headphone socket, left channel seems to be missing but if put slight pressure on the headphone jack with my finger I can hear both channels fine. Likewise, the volume of 'casio chord' feature is very low (like 10%) but when slightly move the accomp volume slider it outputs normal volume. I can hear scratching, crackly type sound through speakers when move the slider. Main speakers, left, right line out all fine. Rhythm and main volume sliders work fine. There was a lot of dust on the fascia when I opened the box so am thinking, hopefully, might just need a good clean. Had the back cover off for a quick check and looks reasonable inside.. no visible rust or whatever. So, not too bad overall but any tips on restoring the headphone socket and servicing the volume slider controls ?