Question about RCA F31672ET TV
WHAT STARTED OUT TO BE A POWER PROBLEM, WITH I BELIEVE A RELAY, IS TURNING INTO A NIGHTMARE. NOW THE POWER IS ON, BUT I HAVE NO SOUND AND THERE IS VERTICAL ROLE THAT I CAN'T FIGURE OUT. SOMEONE OUT THERE PLEASE HEEEELP!
You have a Tuner on Board that needs reworked. You must remove the bottom shield and resolder about 20 points. As for the sound problem you may by now have a bad eeprom [location U3201]. We may be out of Horizontal Frequency as well. First fix the tuner then replace the eeprom.[Iwould install an eight pin IC socket upon removal of eeprom, then you can insert or remove the new eeprom anytime after this]. And also check capacitors C4404 200V at 2.2MF, C4105 200V 10MF Will be bad in this case, C4127 and C4709 these may be weak. This shuld repair your TV. PS the eeprom part# is 223957. Before you change the eeprom see if you can get a good picture after resoldering the Tuner. This is delicate work so be careful or you will destroy the TV. If you do have a good video and no sound, clip R1915, this will defeat the mute,but sound will return. Just so you know repairing this TV is quite complicated good luck.
Posted on Apr 29, 2010
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Posted on Jan 02, 2017
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