OB-Xa Voice Card Repair #1 for Skiroy

I have been helping fellow Youtuber Skiroy by repairing his OB-Xa's voice cards. So many of you have been asking for assistance that it is hard to keep track of everyone through youtube's message system. Please ask again if I haven't responded to your message.

[fredturd]

Yes. The initial tune trimpot will be set in a different value position, but more importantly, I would need to adjust the CV scaling after replacing the resistors. The service manual's way of doing it is tedious, but if you have relative pitch (or even perfect pitch), then you can get the ranges much closer faster.

I use a Conn ST-11 and Peterson Stobo-flip for the final adjustment. The ST-11 is better because you can see both VCOs at the same time when tuning them against each other.

[rgx]

Interesting thanks for the post. Do those 2 resistors you mentioned replacing effect the tuning?