Classe Model 20

[Mohan Siribadda]

Hi

I have been using this fine Classe Model 20 solid stat pre-amplifier for many years. Recently it encountered a problem:

While I was listening to music, the Pre-amp tends to go to the stand-by mode (green color). I checked whether there were any problems associated with the other connected equipment or the cables. I found none.

This amp drives my Marantz MA500 (pair) power mono block amps.

Also, I switched off the amp for some time and later switched it on and listened to a cd player connected to the pre-amp. After 3-4 minutes of normal play, again the pre-amp goes to the standby mode. Also, I found the green led was blinking continuously without attaining into steady state.

Can anyone help me how to overcome this problem. Unfortunately, Classe has discontinued this model long time ago. So it is difficult to get the service manual of this amp.