All about the Roland Jupiter-series

Hi John,

Most likely you're gonna need a new VCA-IC, custom chip by Roland... :-( 
I had a similar problem with my JP8, one dead voice on both oscs. I had to
replace the VCA-IC to solve the problem. I'm not sure if the JP6 uses the
same parts, but I have heared that this is becoming a 'regular' problem
amongst the JP8s. It happens more often when teh age of the instrument
progresses... The IC cost me about 10 euros/USD + 2,50 shipping and two days
of hard labour...finding out where the problem came from...and fixing it.

If it is this custom IC that's dead, I wish you all the luck in the world
finding a replacement. Roland has discontinued their stock in JP-parts in
Europe...but maybe your repair man has a few on stock.

Good luck, let us know how it turns out.

RVe

~    Date: Mon, 17 Feb 2003 21:12:36 -0000
~    From: "John <calyx93@...>" <calyx93@...>
~ Subject: JP-6 problem
~ 
~ Hi there!
~ 
~ I've had my Jupiter 6 for nearly four years now - and have recently 
~ noticed a problem that perked my ears up. (I know this might be a bit 
~ of a "dumb" question, but I'll post it anyway).
~ 
~ On every sixth note I play, only one oscillator sounds - well almost. 
~ If I turn the mixer knob to VCO 2, there is a faint sound - but quite 
~ low. Almost as if the ocsillator is still functioning, but the 
~ amplification has been lowered significantly. I can get full volume 
~ on the noise waveform though - strange, huh?
~ 
~ Is this a common problem among JP-6's?  Anyone ever experienced this 
~ phenomenon before? 
~ 
~ Any help is appreciated! I just wanted to ask before I took it to a 
~ repair shop.