Discussion about the Korg PolySix synthesizer

Hello, I have one poly-6 since 2 months. The memory does not work, I verified the 
battery, the ic 25,32, 30 (where there is a bridge on pine 3)...But it seems too difficult 
for me.

Another problem for me, it's that I find suspect the heat which results from the 
KLM376 A1 PS,when the poly-six is on, is it normal? 
(I wouldn't want that it burn  inside!!!)

Thank you for all your advices!