Originally Posted by tstu102
I've had what I thought was a dead voice chip in my roland mks 7 for two years now. But the thing is sometimes it will work perfectly (like when I brought it to get fixed). Very rarely.
Is this possible? Because it has been dead for two years but is now working. Or do I maybe have a loose connection in the synth somewhere?
how does it sound when misbehaving?
I've heard a bunch of these chips die in different synths, and you can often get what sounds like a stuck note, otherwise you can get sounds like static when you play, general distortion and warbly tones in the sound of a voice.
generally, when a voice chip starts going bad, you notice it some time after power on. If it happens when you are using it you can turn the synth off, leave it for a while, and keep using the synth.... then gradually over time the time between turning it on and having a problem with the voice becomes zero...
so - if your synth problems sound like that - then you probably have dead voices.... if its the case that this sort of thing has come good again, I'm very impressed! never seen that happen.
But if you have voices that just stop working, then can work again, I'd be looking at dry solder joints or cracked PCB tracks.. though the MKS-7 is a really solidly built rack, so I'd be very surprised about cracked traces.
also - bad voice chips tend to die together. if you have one bad chip, and leave the synth on for 24 hours you might discover you actually have 2-3 more bad voices waiting to happen.