I have a problem with the mono section of a Siel cruise.
If anyone has experience with this problem, i’m very grateful for any advice.
It only gives a sound once, after the fade out it won’t make another sound, unless the register ist switched off and back on again. Most of the time it won’t make another sound after the first fade-out.
A big Thank You in advance 
SIEL CRUISE
POLY SECTION WORKS
MONO SECTION FADES OUT AFTER 2 SEC. ALL REGISTERS EXCEPT “GUiTAR”
IF ANOTHER KEY IS PRESSED WHILE THE
SOUND IS PLAYING, IT PROLONGS THE
FADE OUT
HAROWARE LOOKS OK
NO CORROSION
FUSE REPLACED
ALL PLUGS DISCONNECTED AND RECONNECTED
GROUND CHECKED
ONE TIME THE SOUND TOOK 7 SEC. BEFORE FADING OUT BUT ONLY FOR ~ 5 MIN.
It sounds like there might be an issue with the mono section’s envelope generator or a faulty capacitor that’s affecting the sustain/release phase. Since the hardware looks okay and there’s no visible corrosion, it could be an internal component failing intermittently. Given the one-time 7-second fade out, it might be worth checking for any loose connections or testing the components in the mono section with a multimeter. It could also help to try reseating any internal chips or connections.
