Hi -

I was hoping he would. Maybe he's too busy. I have yet to reseat everything and then give it a go. I may try that today. I have a feeling it's a trace screwed up, a chip malfunctioning or maybe even a cable off 1 pin. You never know.

I have replaced the front face panel with complete success, but I may want to check out the ribbon cables and see if the painted lines match up perfectly with the plug, etc...

I have noticed a few other small quirks as well, but then this is a finicky keyboard at times. I love the sounds but may have bought it (a long time ago) with small faults that escaped me back then. Funny, the sounds, without modding them play fine!

I have replaced the faceplate, top left mommy board, and LED, the output and headphone jacks. I have also taken 2 sliders from the old board that were working, cleaned the crap out of the them and soldered them back into the Contour and Resonance spots. Maybe, since I don't have any instructions (service manual is skimpy) that there are calibrations to these filter items. My EX-8000 has calibrations for all 8 parts and uses grommets (?) that you can turn. I haven't touched them because they work!

Since I changed the sliders, they work better but not anywhere near perfect. I know I cleaned and mounted them properly.

Yup, I'm at an impasse here.

Tracy


--------------------------------------------

On Thu, 5/17/18, karmakater@... [chromapolaris] <chromapolaris@yahoogroups.com> wrote:

Subject: [chromapolaris] Re: Fw: [vintagesynthrepair] Help With a Chroma Polaris - Please?
To: chromapolaris@yahoogroups.com
Date: Thursday, May 17, 2018, 12:27 PM


 









 i have the same issue as tracy. theres a
deadspace at the start with the cutoff and resonance slider.
the sliders seems to be ok, the latest derocco firmware (rev
11) is on the eproms, is it a matter of calibration after
updating...does paul have a clue? 
















Posted by: karmakater@...