Virus Ti Polar - Dead Keys

[unknown_artist]

Touching the contacts manually by hand may not be the best way to test it as it's probably more complex than just contacting the contacts individually. The contacts will be trying to calculate the velocity/speed from your 'press' between each of the two feet. I guess make sure you use an 'init' patch where velocity doesn't modulate anything, and I think for the key press to work you'd need both feet to cover all four of the PCB contacts, not just two of them, and to contact them in the correct order, and time/speed. I'm just guessing this, though.

I did this with other contacts too, and it worked well except the faulty contact.

PS> actually it would be easier to try taking off a rubber strip from one of your other octaves temporarily, fully install it into the 'faulty' PCB octave section and see if the key still doesn't work. This would ascertain whether it's the electronics/PCB or the rubber strip.

Already tried this too. No change.

Unless others chip in, I'm unsure what to advise further other than possibly contacting http://synthesizerservice.de for advice, who are Access' service guys, although they are based in Germany.

Thank you, I'll call them tomorrow. I hope they are not going to ask €300 to fix the issue, its only 1 key.

[unknown_artist]

thank you a lot for that information, orx65. you give me a hope.

is it really necessary to desolder the diodes first before measuring them?

i did the measurement already - you can see the values on the picture i got from all the diodes (more or less same values).

do all diodes have to show the exact same value? or is it not a problem when one diode shows 0,619 and other one 0,625?

best regards

hi
yes for correct measurement is necessary desolder them as any other different electronic component..unfortunately i don't have schematic of this synth i know that a few difference can to be a normal tollerance anyway the correct value for germanium diode is 0,5 - 0,8 v ..do you want to be sure ? replace all 4 ..example link
http://www.ebay.it/itm/AA117-Diodo-a...sAAOSwEZdaCY1T

let me know , good luck

[unknown_artist]

Here's a photo of the 2nd board - in that board comes the signal from the contact PCB. Any ideas what component from this board could cause the dead key?

i'll try to resolder all solder joint incoming from red connector , i realize that it is an empirical solution but considering that we do not have the schematic ...

[Michael Vilogi]

did you ever find fix? similar issue here

[Timo]

Originally Posted by Michael Vilogi

did you ever find fix? similar issue here

Have you tried this thread?:- Indigo ---------> 1 key not triggering <---------