Question about Toshiba Televison & Video
Re:2"Ive read that it could be the convergance ICs. Could this be?"
That is a complete guess.
The clicking noise is the protection switch that keeps the TV off because a wrong voltage caused by an internal fault has been detected.
This TV does not return error code, and there is no clue on the nature of the problem.
Convergence is a common failure and surely can be one of the possible failures, but you do not replace the two convergence ICs on this ground.
Testing on convergence is done checking continuity on the resistors at the base of the ICs, and on the resistors placed in proximity of the connection between the convergence board and digital controller board (this are sometimes called pico-fuses).
Convergence ICs get replaced without testing only when there is clear evidence of an alignment problem that cannot be fixed with service menu adjustment. In that case the TV is usually working while showing signs that one of the two power amps in convergence board (the STK ICs) has blown.
Unless before failure you had bowed picture or colors not matching, there is no sign of convergence failure. The TV must be tested at component level to find the problem.
Posted on Sep 28, 2010
Sounds like a failed or at least failing power supply / power board inside the TV.
Unfortunately this is a very difficult repair, and unless you are an
electrician I would not recommend attempting it. You will need to
contact a local TV repair person in your area. If you think it may
still be under warranty please contact the manufacturer to file an
RMA. If you happened to purchase the TV with a major credit card (not
a debit card) there is a good chance it may still be under the free
extended warranty most credit cards place on electronics. Please
contact your credit card company to inquire if they do this, and they
will be able to file the claim and get you a refund for the TV.
So sorry that I don't have better news but it is definitely a power issue internally.
Posted on Sep 28, 2010
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Posted on Jan 02, 2017
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