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Question about RCA P56950 56" Rear Projection Television

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Eeprom problems, need chipper checker test

Is a chipper checker test an expensive repair, or am I better off buying a new tv?

Posted by calihrdknock on

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The chipper checker is to update the eeprom in the tv and assist with alignments. should not be to expensive from a knowledgeable repair person.....John

Posted on Sep 18, 2007

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Do you have sound still. Ifvso while the TV is on, shine a torch into the screen .
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Changing the convergence IC's could cost $300-$400 total.CRT based TV rear projectors are more or less obsolete now,with everything going to DLP and LCD.These days 5 years is the expected life on these TV's (most extended warranty contracts only cover up to 5 years)

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The problem is the result of a failure in the horizontal output or high voltage section. This means that respectively, either HOT/Convergence IC, or flyback transformer is defective.
The repair is done testing the flyback, then testing or replacing the convergence IC or transistor causing the problem.
The repair job will go above $150, and due to the age of TV I would say that it is better purchasing a new set.
The failure in fact cannot be repaired by the user. There are no part that can be replaced in an easy way. The repair must be done by a trained and experienced person, as it consists in testing at component level, then in doing some precision soldering/de-soldering to replace the parts involved.

I would say that this TV has done its job, and that rather to repairing the old set you would better buy a new TV.
I think that the best choice would be a new flat panel TV. An LCD TV consumes less than half the power needed by an older CRT like yours, and will repay the expense by itself over the years.
Other advantage of a flat panel TV is that there is no radiation emission. With any CRT TV, the beam hitting the display will release a little amount of radiowave emissions. The TVs are shielded, and the emission who is mostly filtered, is not considered dangerous.It is however better to reduce the exposure of human body to higher frequency radio-waves like those emitted by CRT.
In short. It is time to send the old CRT to retirement and to get a newer TV. A new flat panel will start at less than the repair price for this TV and will present different advantages.



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eeprom problems, need chipper checker test
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