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I was playing the Poly 800 (Mk1 Reverse keys) I bought off Ebay and it has been working fine for hours. I noticed some crackling when I played notes and now the left channel is dead.

I turned it off for a while and turned it on and the channel worked for 30 seconds, crackled and now its gone again...

I can hear this fast clicking sound in the dodgy channel when I turn the volume of the synth right down.

Any idea what is going on? has anyone had this issue.

Thanks

Well this is weird. It seems to have sorted itself out now.Hope it stays like this...

I do have exactly the same problem (ok, not exactly...)
When the vol knob is turned down/almost off, then there's very quiet sound in both channels but when turned up it crackles a bit and the loses one channel.
Might be a faulty pot or something worse?
thanks