Elka E39 Organ
2012-01-20 by Brian D
Hi All Is there anyone on this forum that has experience of the Elka E39 organ? I'm having a problem with one! On first visit the unit produced no sound from anywhere, I quickly ascertained that the pedal lamp was not illuminated, the lamp was fine but the -12V was missing. This proved to be the LM317 defunct. I changed this and the pedal lamp was now OK but I still had no sound. I input a signal into the external amplifier jack and found the output was working very well. I then found that the rhythm section was also working correctly, percussion was fine and I could do various sounds with this section, but still neither manual nor the pedals gave out any sound. From the circuit I could see that the only section common to all keyboards is the microprocessor. However as the rhythm section worked OK I find it unlikely that the microprocessor would fail all three key-sets and leave the rhythm section working. I would be interested if anyone has any suggestions as to how to proceed. Regards Brian