When i press a key, the note start slowly to rise out of tune after the key is depressed, and it doesn’t stop. So if i play a very low A, it starts slowly to rise, it takes few minutes, but from the initial note (low A, scale 32’), i hear it come to a scale 6’ and it doesn’t stop.
Please help
You need to take the Rogue to a tech.
A problem like this cannot be resolved over the internet.
EDITED 'cause no answers, and no offense. I’m just a little bit sad to get that “go to a tech” reply in a forum where “Share Ideas and Pass the word…” is the word.
Cheers
You asked for help or advice and he gave it to you.
MC is a tech and that’s his professional opinion.
I’m a tech and I’ll now provide the same advice:
Take it to someone that knows what to do.
What I don’t understand is what other advice you’d like before spending money?
Prayer?
Face it north and chant?
Wiggle it while reciting poems by Jim Morrison?
It’s a technical instrument with a technical problem and it needs a technician.
You’ve just received two free professional opinions indicating that advice alone will not fix it.
Certainly we can’t be the ones looking stupid because we know how to fix the problem. 
[quote=“mp500”]God!!! Can’t believe i didn’t thought of this!!! 
Do i look stupid?quote]
Now that you mention it…
Yes I had the same problem with my Sonic Six. After taking it to a qualified service techician he determined there was a capacitator which had gotten old (imagine that) and replaced it. Fixed it up real gooder!
Your problem sounds very much like an electronical trouble, best take it to a tech. Skeematicals are available on the net for free too.
P.S. I wont even charge you for this free advice Best Of Lucky Man, Now i gotta go brush my tooth
It does sound like a leaking capacitor, and probably would be difficult to diagnose/repair if you hadn’t had experience with this sort of thing before.
If you replace the capacitors yourself and fix it let me know. 
EDITED 'cause no answers, and no offense. I’m just a little bit sad to get that “go to a tech” reply in a forum where “Share Ideas and Pass the word…” is the word.
Cheers
I deeply detest that gross misjudgement.
No one is keeping anything to themselves or giving you any lectures.
The fact of the matter is you have a problem to which there is no simple troubleshooting possible over the internet. Synthesizer circuits are complex systems that sometimes require expert attention in person.
You are welcome to search the archives and find examples of “keeping their science to themselves”. Sometimes I do help, sometimes I can’t.
Your petulant disposition of insulting our intelligence is not welcome here and is rather undiplomatic coming from someone from France. If you got a punk attitude to blow off, then take it to The-Gas-Station.com because it has no place here.
the phrase “You catch more flies with honey than you do with vinegar” comes to mind.
Now I shall ascend amidst a great chorus of Moog Trumpet patches back up into the sky
p.s. I’m having a good week…that advice is free too
cheers
LPTE # 585