Piet66

Hello pattern9, Great, I‘m happy it works for you! Cheers, Piet66

Hi Maxim, Firstly, congrats for TWO JP-8000, that's a very fine synthesizer model. Based on your description I suspect that both ribbon sensors are defective. Unfortunately sensors often seem to develop issues after year...

Hi mockba_the_borg, My pleasure, any questions please let me know. Kind regards, Piet66

Hi All, After a longer pause I recently resumed with my investigation. With success! Today I finally fixed the issue: Root cause actually was ...the ribbon sensor (sic!). As I couldn't get hold of the original part I use...

Hi, I couldn't get hold of the original part therefore used a different part. The sticker on the wrapping says: Linear SoftPot (Ribbon Sensor) P178 Http://adafru.it/178 This is the dealer, manufacturer is "Spectra Symbol...

Gents, Just to let you know that I fixed this issue. It was actually the ribbon sensor which I replaced with a comparable but not compatible part (impossible to get these days). Everything including Hold and Relative wor...

Hi All, After a longer pause I recently resumed with my investigation. With success! Today I finally fixed the issue: Root cause actually was ...the ribbon sensor (sic!). As I couldn't get hold of the original part I use...

Hi, Just to add that I also checked all related signals which are responsible for Ribbon Assign / Hold / Relative push button scanning. All seems to be working fine. Not an easy one, unfortunately. If a Roland technician...

Hi, Today I finally found some time for further investigation. I took my oscilloscope and did do some measurements around the "hottest" candidate for the malefunction, IC3, TC74HC4051 on Panel Board B. It looks as if the...

OK cheers, our synths then have same OS version, that's a good basis for further investigation and comparison. And yes, ribbon should be of resistive type. Interesting new finding: I suspected that Ribbon Hold function m...