Yep, probably the slider. See if you can clean it but be careful. The paint or lacquer that they put on the poly800 can come off so try not to get anything on it.
I usually remove the circuit board and get some isopropyl alcohol in there and then squeeze the tip of a cotton bud/q-tip with some pliers and poke it in the slider and try to clean the track, and if I want to do a good job I de-solder and take the slider apart to clean it.
On Monday, 29 September 2014, 20:04, "tim.tashpulatov@... [korgpolyex]" <korgpolyex@yahoogroups.com> wrote:
Hi all,
Smee again. Now my Poly 800 won't bend with joystick. Vibrato and VCF however work, it is only bends to the left and to the right that do not work.
I have checked the joystick pot that is responsible for bending, it appears to be working. What can I check next? I was suspecting the bend amount slider, perhaps anyone has any clues?
Regards
Tim