PSW505 Powers up Plays sound for a second then powers off

Recently my PSW505 does not want to stay on.
If I unplug it or turn it off for a few minutes power it on the light changes from red to green, plays sound for about a second then powers off.
Any Ideas?
If I unplug it or turn it off for a few minutes power it on the light changes from red to green, plays sound for about a second then powers off.
Any Ideas?
Comments
If it’s switched to “On” and not “auto” and it’s shutting off after a few minutes then it’s broke.
Unfortunately the 505 amp typically only lasts a couple years, so unless it’s fairly new it likely has failed.
Probably better to buy a new subwoofer.