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I have a 1999 RCA TV model # P52921. It completely shut down. It has no sound and picture. I checked the fuse with my tester and there is power coming out of the fuse. I hear a slight, faint, pulsating chirping sound when I plug it in but nothing else. I'm not an electronics person, but I have skills on soldering. I have carefully marked all the plugs and removed them from the main circuit board. Looking at the board, I see no obvious burnt out parts. Does this sound like a common problem with this model. If so, what may be the common solution in your opinion?

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Check SMPS power supply. DC voltages. First check the power supply
bridge/ diodes. Then check DC votage should be 70% rating of the
capacitor voltage. If the capacitor is dry it will show low voltage.

But the diodes should be OK. Check the high wattage resistors
connected in the power supply. There will be a resistor in the
ac input also. Beyond this check all +DC voltages.

Posted on Aug 23, 2010

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DO not have set fixed file insurance if you have it! this set can cost more then it is worth.Save your money buy a new one.Thankyou for using FixYa. Have a Nice Day.

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