Had a Sony Trinitron KV32FQ75U for 12 years and it is starting to switch itself off after about two hours of viewing. The red light stays on (it flashes) and the TV can be turned back on again using the stand by button but then doesn't stay on for as long. I assume the tube is going as the screen is getting greener - is there any way back or is it time for a new TV? Cheers Brian
Make: Sony Trinitron
Vaccuuming out the dust in the back.
When the set shuts itself off you stated that the "red light stays on (it flashes)". Can you tell me if the light is blinking continuously, or in a pattern (for example 4 blinks, pause, 4 blinks, etc.)?
Thanks for coming back - tested it tonight and it is five blinks, pause, then five blinks again, then pause, etc. Let me know what you think. Regards
There are several problems in your set that could cause this. It could be a faulty CRT, cold/failed solder joints or MOST likely, a shorted Vertical Circuit IC regulator. All of these problems are common with your set, and would require circuit testing and replacement in order for the TV to function normally again. Average cost for this type of repair will between $250-$400 depending on which circuit has the failure on the set. Given that a new LCD TV would cost you only around $400 for a large screen, it is not cost effective to repair this set. Unfortunately, there are no resets or series of buttons you can press that will solve this problem and the set will require component replacement to operate normally again.
Over 20 years of experience installing, troubleshooting and customizing electronics.