Question about Toshiba TW40F80 40" Rear Projection Television

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Tv not powering up

Red light come on but blinks,no sound and no picture

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Re: Tv not powering up

You likely have bad convergence ouput IC's that have caused a fuse to blow.  The IC's are fed with a +27v and a -27v and the fuse for one of those supplies is likely open.  If so you will also need to replaced the convergence output IC's type #STK392-120.

Posted on Oct 23, 2007

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Re: Tv not powering up

Check micro fuses in power supply,Ex. F851,F852,etc.
Common cause is convergence IC's are bad,located on large heat sinks.let me know....T.

Posted on Oct 23, 2007

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SOURCE: TV on/off light keeps blinking red light/no sound or picture on screen

Here's a solution that I received from an TV expert in another website: "This sounds like a power supply problem. i have seen it several time on your model. i would not keep trying to turn it on it might damage something else in the tv. the reason it is shutting off is because the power supply is putting out too much voltage. a repair cost will range around 300-400. this is a great model and well worth a repair. here is a web site that might help you in finding a repairman." <-- $300-$400 is too much! But throwing away a 300lbs TV will cost a lot of $$$ for the towing and dumping too. I haven't decide what to do yet.

Posted on Dec 19, 2007

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