Hello,
I'm sorry to bother you and excuse my English, I translate with google translator ..
I have the same problem of pitch bend with my Korg Poly 800 MK1, you managed to solve?
how you solved?
I thank you in advance for your response.
Hello.
Il Giovedì 9 Luglio 2015 22:42, "kogz23@... [korgpolyex]" <korgpolyex@yahoogroups.com> ha scritto:
Doh! Thanks, yes, embarrassingly that was the problem!
Managed to fix the keyboard by replacing IC34. The chip was shorting.
Got DCO 2 back to life, tracked it down to IC18 missing a connection.
Now I have a problem with the pitch bend. I get correct readings at IC10 pin 7 as described in the service manual. But the pitch bend seems to do the reverse of what you would expect.
Reading pin 7 of IC35 with the pitch bend in centre I get 0.7v, with it up it goes to -3V, down it goes to +3.5V. Is this behaviour correct? As I side not the synth sounds alot better tuning wise when the pitch bender is disconnected. I have read the resistance of the pitch pot and it seems to be functioning as you would expect.
Thanks again,
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Re: [korgpolyex] Re: Poly 800 Mk1 display not working
2015-09-29 by Vincenzo Vincenzo
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