Question about RCA D52W20 52" Rear Projection HDTV-Ready Television

3 Answers

TV turns off by itself

I have a toshiba 46h84 projection tv and it has been turning off by itself, unplug it and it will turn back on. now it just stays on for about 30 seconds and then turns back off, power button does not work or the remote, the tv is only 3 years old what could be the problem

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  • rowdocwby Feb 18, 2008

    yes I comes back on completely and then it turns red and flashes and pops off.

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3 Answers

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  • Master
  • 3,422 Answers

Hi,

this sounds like the convergence circuit going bad. it is very common on your model. it is some bad parts overheating. in time the tv will stop comming on. it is a good tv and worth a repair.

Here are few trouble shooting steps you can try:

ONE: Disconnect the power cord for 4 hours. Then when you power it back up the internal soft codes will automatically reset to factory defaults.

TWO: The whacking test is to just bang or smack the set with your hand on the back, side, top, etc., to see if there are loose connections or cold solder joints inside that are acting up. If so, the banging should knock them back to normal and the set should restore. You might have to use some creative banging and some have had to put a book or magazine under one corner to torque the chassis enough to get it to work reliably.

Goodluck..

Posted on Feb 17, 2008

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  • RCA Master
  • 19,396 Answers

Did you try disconnecting from power and then plugging back after one hour or so? It is the firs thing to try.

Posted on Feb 17, 2008

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  • Expert
  • 689 Answers

There are few steps to diagnose. First of all do you get any light or instant sound and light in front of the TV?

Posted on Feb 17, 2008

  • ExpressFiX
    ExpressFiX Feb 18, 2008

    Thats shows there is a power failure, one of the components is defective that causing over current and power circuit cuts of the current to protect further hazards. If you dont have experience get help from a hands on tech or take to the service center.

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1 Answer

My 46h84 turns off and i have to unplug and replug


Good day!!!!


That problem is usually cause of faulty capacitors on the power supply board..

Just follow this instruction to fix your TV..

1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
5. Some of the capacitors not bulged so its better if have a capacitance meter

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When i turn my toshiba tv model #46h84 the green bulb lights up the screen but then shuts off and there is no picture! please help me out!!!


I have the same exact problem...for a few weeks the TV would turn off and the red power light would blink. Then the other day I started having exactly the problem you describe...green screen for a few seconds and then total shutdown.

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Yes!!!
You need to open the case, then remove the board from the unit, then check all the circuit, probably there's damaged circuit connections, use soldering iron to fix this problem....

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The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

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my tv starts turning a red color and then turns off by itsself then i have to unplug it to turn it back on every 5 mintues or so.

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1 Answer

46h84 toshiba rear projection tv


possible yoke fault or deflection /ask for an estimate before the repiars are done.might cost you a service call.

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