Discussion about the Korg PolySix synthesizer

Hi!

I´ve just got a Korg Polysix with already done Battery Modification 
and a new IC31 but the Knobs won´t work (Tempo/Mode/Octave 
switch/Pich Bend does work but the Rest not). The Programmer is also 
o.k, no duplicate lighting LED´s or something else.

The Variable Resistors gets voltage and when i set here or there a 
Bridge on the Connector between KLM-369 and KLM-370 i´ll get a 
Reaction (no matter which Parameters are affected, some bridges make 
a distorted/overphased sound or overdriven) or the MG-Led flushes 
first slowly and then faster and faster until she´s complete lighting.

I don´t believe that the 2nd 74LS08 is defect, i know from my other 
Polysix if this chip is complete removed even the Programmer won´t 
work anymore (maybe the 8048 fails in this moment to initalize). 
Maybe it IS the failure but if i can be honest: Removing Chips is not 
the best what i can do and i destroyed (while trying this) my other 
KLM-367-Board (does anyone have one, even without the 8048?)


I removed from my other Polysix then complete KLM-369 and KLM-370 
Board and connected it there, it won´t also working. I also don´t see 
any corrosive connectors and i also tried to insert another 8048, it 
won´t work. I also tried to remove the blue wires from the 369-
Connector step by step, no affect.

Anyone an Idea (and also a KLM-367 too much)?!??!

Thanks!

Stef, Germany