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Blows fuse Has a dead short blows fuse everytime. I have an RCA television with Chassis #CTC197AH with the same problem. When connected it blow the fuse (5 Amp) I have replace the thermistor and it still blows the fuse. I cannot be sure I used the right thermistor. Do you have a part number for this thermistor????

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You may want to check the regulator IC. RCA had a lot of shorted regs

Posted on Nov 07, 2008

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BLOWING FUSES


Ist of all is 10 amp the proper size?
2nd if you bypass and whatever you are replacing the fuse with, is it warm, or hot to the touch?
If it is you have a direct short in you have a direct short in the electrical system. Check for bare wires,wires touching the motor or chassis that don't have a connector.
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Mar 20, 2009 | Garden

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Tv dead


no problem

replace by same number.

but remember before you replace check the following.

  1. check for normal output from power supply.
  2. check components connected to flyback transformer.like capacitors & diodes.
  3. check for print short.
  4. while replacing h/output be careful to check heat sink compound & mica sheet normal.
  5. put on the set
  6. if still it blows then flyback transformer is faulty.
  7. hope this will help.
  8. good luck.

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whenever fuse blows every time it is the indication of short circuit in tv. so please do not put fuse unless you know the cause of blowing fuse. these are the reasons of blowing fuse. 1 main filter cap.short. 2 rectifier diode short. 3 swithing transistor short 4 horizontal output transistor short 5 caps & diodes connected to flyback transformer short. 6 print short. 7 at last if every thing ok then flyback transformer defective. hope this will help. if you are not a tech person call skilled tech to fix it. good luck

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Blows fuse


If you disconnect the degaussing coil and the set plays fine, it means one of 2 things is wrong. The degaussing thermistor could be shorted internally. I have seen this happen a few times on those degaussing thermistors that are in the little black boxes with 3 legs. Those boxes actually have 2 thermistors in them, one to do the actual degaussing and another connected directly across the AC to act as a heater for the degaussing thermistor. One of those thermistors could have "flashed over", which would blow the fuse the instant the set it turned on. The only other thing would be the wrong size main fuse. Without a degaussing coil the set probably draws about one amp, but the surge at turn-on with a degaussing coil could be as high as 4 amps. If you have the correct fuse installed and it blows at turn-on, replace the degaussing thermistor.

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