Vintage Synth Repair

ok, problem solved.

it just needed the test and set procedure for the bender and ribbon controller, described in the service manual.


Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist
[Doepfer_a100] group owner
www. parallel - worlds - music. com
www. myspace. com/ parallelworldsmusic
www. myspace. com/ interconnectedmusic
www. myspace. com/ memorygeist
www. DiN. org. uk
www. musicamaximamagnetica. com
www. vu-us. com


--- On Mon, 10/4/10, Bakis Sirros <synth_freak_2000@...> wrote:

> From: Bakis Sirros <synth_freak_2000@...>
> Subject: problem with JP-8000, pitchbend /lfo 2 section.
> To: "vintagesynthrepair" <vintagesynthrepair@yahoogroups.com>, jp8000@yahoogroups.com
> Date: Monday, October 4, 2010, 5:57 PM
> hi lists,
> 
> i recently got a 'battery low' message in my jp8000, so,
> today, i changed the battery (with the correct type of
> course). it was an easy process and was careful not to touch
> other electronics inside the machine. i also used midi-ox to
> dump all the sounds and after replacing the battery i
> reloaded all info in the machine with no problem.
> but, now, the pitchbend does not work (it works, but has a
> very limited range of less than a semitone) plus the 'lfo 2'
> section does not work (the 'lfo 2' does not affect pitch or
> filter or amp), and the ribbon controller affects parameters
> but is only sensitive to tough (like an on-off switch) but
> not position as it also was...
> 
> i suspect something from the controller section left of the
> keyboard is damaged or disconnected... (i did the mistake
> and put the upside-down jp800 in a hard surcface when i was
> changing the battery...)
> 
> any further ideas / help please?
> 
> many thanks in advance,
> 
> best regards,   :-)
> Bakis.
> 
> 
> Bakis Sirros - Parallel Worlds / Interconnected / Memory
> Geist
> [Doepfer_a100] group owner
> www. parallel - worlds - music. com
> www. myspace. com/ parallelworldsmusic
> www. myspace. com/ interconnectedmusic
> www. myspace. com/ memorygeist
> www. DiN. org. uk
> www. musicamaximamagnetica. com
> www. vu-us. com
> 
> 
>       
>