Yo, I got a solid state Ampeg cc140 amp head, recently at louder volumes it will cut out and no rocknroll noise will come out, if I power down then back up sometimes that will help it for a while but it keeps cutting out, its not a cord issue, anyone outhere have a suggestion or knowledge of what it could be, I don't know much about repairing them, specially solid state, any comments would be appreciated, thanks