I have a MTH Z4000 that after a minute of being turned on, the transformer will shut down completely by itself as if you pulled the plug. The same thing happens under no load conditions. When I turn off the transformer and turn it back on, it will start up but shut down quickly. None of the 4 circuit breakers are activated and when I pulled off the shell, every thing looks good, no burnt components, no burning smell, nothing feels hot.
Appreciate any thoughts on what might be wrong with the Z4000.