When I turn on the power in my Emerson TV, it will switch off immediately after 5 seconds. Please help me.

Erwin S. Montesa, June 2007

i turn on the tv ok, but it turns itself off in 10-20 seconds. why? is there something that can be done without purchasing new parts? is it worth fixing?

Ken, October 2009

This TV has a network of diodes connected to a PROTECT-1 line monitored by the control IC. If any circuit pulls this line low, the control IC turns the system OFF. The diodes act to isolate all the circuits from each other, its called a diode-OR circuit.
You can troubleshoot by opening a diode which disconnects a circuit from pulling the line low. I had a hunch the EL backlight board was bad, so after opening that protect line the power stayed ON.

I found a bad .068uF 250V cap on the transformer primary, it measured .002uF. I've replaced the cap and the other two on the other transformers just for good measure.

It probably took more time than the TV is worth, but my friend's Mom will be happy, and thats worth it.
I hope this helps, look around for the service manual, it can be found online.

Bob, January 2008

I HAVE THE SAME PROBLEM AND I WAS TOLD THAT THE TV NEEDED SERVICE. I WAS TOLD THERE WAS A SHORTAGE OF VOLTAGE WITH IN THE TV. AND IS VERY COMMON WITH THIS PARTICULAR TV. NO THIS IS NOT A RECALLED ITEM EITHER!!!! MY WARRANTY EXPIRED LESS THAN 30 DAYS AGO. THE REPAIRS WILL COST $50-$100 FOR LABOR ALONE. EMERSON WAS VERY HAPPY TO PAY FOR THE PARTS. I AM CONTACTING THE BBB ON THIS ASAP BECAUSE EMERSON IS AWARE OF THE PROBLEM AND REFUSES TO RECALL.

KELLY ROBINSON, June 2007