if anyone can help would be realy happy to get this amp runnin again. used with a four ohm cabinet when i bought it .was told this makes it work hard as the outputs are for 8ohm. for years the signal would get weak and fade out. when i puhed the reset button on the rear it would come back. about a year ago i went to use the amp and out of nowhere it just did nothing, have never had power up since. should i try to replace the circur breaker (reset button) ? or is it more likely to be the transformer or worse . any sugg. appreciated. thx.