Hi, my name is ***** ***** I have been in the home improvement and repair field for 20 years. I will be very glad to help you today. The issue is caused by a capacitor that needs to be replaced on the power supply. If you can electronics solder this is not a difficult thing to do and is not difficult to diagnose. If you cannot electronics solder then it is not really cost effective to repair because of the age and cost of a new power supply replacement.
To find the faulty capacitor the back of the television would need to be removed. Inspect the capacitors on the board and any capacitor that is not completely flat on top will be the faulty capacitor. If there is not a visually damaged capacitor then test each capacitor with a volt meter for continuity.
Hi to you!
Hi Mike Thanks for your quick response to the problem, your advice is extremely valuable,in making us consider the purchase of a new television over he repair of the old. Thanks again.
You are very welcome. You may still comment or ask questions, even after positively rating my service. I will always respond. To avoid having the same result with the new television, I would recommend connecting a surge protection device.