I have sent this amp to you twice and the last time you said that the amplifier section was renewed.

Most of the problems were solved by this, however, it plays nicely in clean mode but when I press the switch to crunch then back it goes off.

Leaving the amp switched off for a fairly long period and then switching on, it comes back.

Is there anything that I could do to alleviate this as I don`t want to send it back for this if I don`t have to.