All about the Roland Jupiter-series

~ the only thing that does not work is that LFO 
~ white button, 
~ and the knob for the lfo rise time, the portamento works 
~ fine, what i think 

The LFO-button (the white one) has the reputation of being a bit sloppy with
reacting to the presuure you put on the cap... In other words, these things
break easely. I'm currently installing my fourth (!) LFO button... You might
want to replace the button and the electronics underneath with a new block
(if you can get one).

~ i just realized is that the jp only skips this note on the 
~ 4th voice only in 
~ the test mode. when powering up in normal mode as ya said, i 
~ think it works 
~ fine. thanks.

You really should test this to be on the safe side. You don't want the JP to
drop out on you on a gig...? Do you?

Cheers,
RVe