TV goes off as soon as it is turned on

Singer TV Model 20 LNC. When I turn it on (remote or on the set) the red (Standby) light goes off, I hear as if it is about to come on, then I hear a couple of thumps and the red light comes on again. Singer TV Model 20 LNC. When I turn it on (remote or on the set) the red (Standby) light goes off, I hear as if it is about to come on, then I hear a couple of thumps and the red light comes on again.

I am experiencing same problem TV shuts off within 60 seconds of being turned on . Red power light on TV gives two rapid flashes about every 15 seconds after set has shut off on it's own. Unplugging the TV and plugging back in stops the flashing power light but does not solve the problem, I once solved the problem by going to menu, arrowing over to the sleep timer and power on settings and playing with those settings seemed to solve the problem (this must bew down within 60 seconds of turning on), but I can not get it to work this time. I am experiencing same problem TV shuts off within 60 seconds of being turned on . Red power light on TV gives two rapid flashes about every 15 seconds after set has shut off on it's own. Unplugging the TV and plugging back in stops the flashing power light but does not solve the problem, I once solved the problem by going to menu, arrowing over to the sleep timer and power on settings and playing with those settings seemed to solve the problem (this must bew down within 60 seconds of turning on), but I can not get it to work this time.