Korg Poly800/EX800 Users

Hi ! Thanks for numerous answers.

1st of all, there is no backup battery in the unit, it is one of the 1st revision models with 
just the blank space on the board. I was just preparing to do the backup battery mod, but 
couldn't even make it to the store to buy the battery holder... it just suddenly 'crashed'.

For what's the display, it shows a P in the PARAMETER NO. window. 
In the PROGRAMM NO. window something like this ( two lines dot two lines) :

-    -
      -
|  .  



The power supply adjustment issue that narfman96 mentioned before sounds credible. I 
should probably try to find some tech. Or does any of you have a clue what elements I 
could replace myself in the power supply unit ? Soldering is an easy thing... :)

Thanks !
b_e_r_n_a_r_d_g_u_i_l_l_a_u_m_e