Hello!Thanks for the answers! The problem is not on the power supply cause i am usings a pc psu for +/-5 and ground witch is way more accurate than the onboard.. It must be something else... Does anyone knows what can be fried if you put +5 in position of -5 and -5 on position of +5? I believe that the tl072c must be fried... I dont know if the multiplexers can be fried too.. --- In korgpolyex@yahoogroups.com, Michael Hawkins <korgpolyex800@...> wrote: > > -4.42 is too far out of spec. You will need to get that to -4.9 to -5.1. > > > > > ________________________________ > From: bruno lhuissier <bruno.lhuissier@...> > To: korgpolyex@yahoogroups.com > Sent: Saturday, August 13, 2011 12:48 PM > Subject: Re: [korgpolyex] Problem with my poly800 reverse keys edition... :/ > > > Â > The low to high swooshing sound is the analog to digital sample and hold circuits discharging. Which indicates that the A2D multiplexing is not occurring. > > > So like I said, check the power rails first. Then let us know what you find. > > > > I check the power rails: > > The +5V is good (I recalibrate at +5V) > > I ve got -4,42 V for the negative power >
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Re: Problem with my poly800 reverse keys edition... :/
2011-08-21 by iamakisgr