If you can’t bring the amp to a qualified technician for troubleshooting and the problem is largely caused by overheating (you can actually troubleshoot yourself by doing some simple tests), try to determine whether the overheating is caused by insufficient space around the amp especially the top, or the load of the speakers is too much for the amp (low impedance and sensitivity).
If the amp feels hot at the top, give it more space to aid air circulation. 5 inches or more. Alternatively, listen at lower volumes as the amp may be stressed at higher volumes thus causing it to overheat and trigger the auto-shutdown feature.
If the amp feels hot at the top, give it more space to aid air circulation. 5 inches or more. Alternatively, listen at lower volumes as the amp may be stressed at higher volumes thus causing it to overheat and trigger the auto-shutdown feature.