Hi Jim, Sorry if I wasnt't clear. I meant the sample hold circuit responsible for remembering the note that you trigger until another note is played. Not an external control on the keyboard. did you check the resistor for that key? Maybe it's open??? D --- In vintagesynthrepair@yahoogroups.com, Jim Blair wrote: Thanks for your reply, DT. No sample and hold on the ProDGX. The note does not stay at the correct frequency when held. The pitch drop happens immediately on "note on". J wires are aligned, and cleaned, as is the bar. Jim At 05:34 AM 12/17/2012, you wrote: Hi Jim, The fact that the rest of the keyboard works fine seems to rule out that the sample hold function is awry. Does the note stay at the correct frequency if you hold it down? Is it only pitch dropping on the release? Have you checked to make sure the Jwires are aligned properly on that key? Maybe open it up and check to ensure that the contact wires on that top key are aligned the same way as for all the others. If not, bend them back carefully to match the others. (but I'm not really a tech, so don't just listen to me). best DT --- In vintagesynthrepair@yahoogroups.com, Jim Blair wrote: Hello! Here's an odd one up for discussion. I have a Arp ProDGX. Everything works fine....except.....if I hit the top key (highest note) it briefly plays the note, then very quickly drops down to a much lower note (almost instantaneously). After this little event, every key stops working, other than a click for each note. This happens on every patch. Then, if I turn the power off, then back on, everything is fine again until the next time I hit that highest note. Any suggestions on where to point my screwdriver and multimeter? Thanks, Jim Blair Ape Island Sound http://www.facebook.com/ApeIslandSound No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1424 / Virus Database: 2433/5087 - Release Date: 06/22/12 Internal Virus Database is out of date.
Message
Re: Arp challenge.
2012-12-18 by scituate_mass