Question about RCA L32HD31 32 in. LCD HDTV

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My question is when you plug the tv in does AC GO TO THE BRIDGE RECTIFER ac PINS THEN OR DO YOU HAVE TO TURN THE TV ON MANUALLY?

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Posted on Nov 20, 2013

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Tv randomly shuts off. Not sure if it is just overheating or if it is broken.


Hello,
It sounds as if you are having problems with the AC Power reaching the television. Please verify the cord is firmly seated the tv's ac inlet
Also check the wall outlet (and power strip) by plugging in a lamp into it and see if it flickers when the tv shuts off.
Good Luck!
Rich Lilja

Mar 21, 2015 | Insignia NS-32E740A12 32" Class LED HDTV

1 Answer

Just doesnt work any more? no power what so ever . I try to turn on manually and no power either. and its plugged in. I tried unplugging it fir about 6 min. and plugged back in and still nothing.


The problem of your tv is the power supply. First unplug your tv then open the back cover of your tv then try too locate the fuse, in order to locate the fuse try to follow the ac cord it will direct you to the main power supply the ac cord has to lines connected to the main pcb, try to trace each line then you will see the fuse. but there are different types of fuse, the common fuse is the glass type and the ceramic type. If your fuse is the glass type try to observe the filament inside or a small wire if totally burned do not just replace it, this mean that your unit has a shorted part common parts are the regulator and the bridge type rectifier.But if your fuse is only broken burn mark try to replace it with the exact value or rating. And if the fuse is ceramic type you should be needing a multi meter tester try to test it using a continuity in the tester. if you are not familiar with electronic parts try to consult a repairman to lessen the stress thank you and best regards.

Jul 09, 2011 | Sylvania 32 in. Diagonal LCD HDTV

2 Answers

Protron PLTV-32C, 3 years old Have always used the cable remote to turn on TV. Cable turns on. TV will not turn on but, redlight is on. Tried powering manually, tried both the TV remote and the cable...


Tries unplug the tv and the cable box about an hour and replug both.See if the tv reset it self and the cable box reboot it software.Not,than the Tuner board is dead,that the board the coalax signal cable plug into it to get the broscasting signal.

Jul 14, 2010 | Protron PLTV-32 Television

1 Answer

My panasonic rear projection tv will not power on and no lights turn on. Any suggestions?


Please plug TV in another power source and turn it ON,
if still does not turn ON, unplug AC wire of TV, take off back cover and follow AC cord f TV that will take you in power supply board, find fuse nearby and check is it blew off? if yes, replace it with same ratings written on it.
Plug TV in AC wall socket and turn ON, if fuse blow again that means power supply section in TV got problem and need qualified tech to find out and replace components or power board.
Thanks.

Sep 18, 2009 | Panasonic PT-56WX53 53" Rear Projection...

2 Answers

SANYO CLT2054 WITH FADING SCREEN


We had the same problem and it was the ac adaptor which is next to impossible to find. If you find one let me know where?

Jan 27, 2009 | Sanyo CLT2054 20 in. EDTV-Ready LCD...

4 Answers

I have a Flat screen TV Proton 42'' only 1 year 1/2 old


Protron PLTV 4250- wont turn on-
Had the same problem with one here- The 110v end of the power supply board was found damaged, The following items may need to be replaced:
Fuse F1 (soldered in) . 6.5a @250v time delay
Mouser 576- 021506.3HXP – note this style is for a fuse holder instead of solder in- I added a fuse holder on the board
RT4 & RT5 inrush surge suppressors - I used shintron 8d-18 power suppressing thermistors
BD1 bridge rectifier - Mouser 627-D15 XB 60H Shindengen

If you want a little more protection modify the board as follows:

1.replace only RT5 in its original location & move RT4 into the other ac input line in front of the bridge rectifier. (cut trace & drill solder holes)

2. Add: MOV (metal oxide varistor) across ac inputs of bridge rectifier.
Maida mdc-z481-8oul or D69 ZOV 481 RA 105
This arrangment is copied from a samsung power supply.

Be careful when plugging in the I/O box on the outside cover, if any pins are inadvertantly bend loss of picture will result.

I have pics if anyone needs them .

Nov 17, 2008 | Protron PLTV-4250 42 in. LCD Television

3 Answers

Protron flat screen tv


Protron PLTV 4250- wont turn on-
Had the same problem with one here- The 110v end of the power supply board was found damaged, The following items may need to be replaced:
Fuse F1 (soldered in) . 6.5a @250v time delay
Mouser 576- 021506.3HXP – note this style is for a fuse holder instead of solder in- I added a fuse holder on the board
RT4 & RT5 inrush surge suppressors - I used shintron 8d-18 power suppressing thermistors
BD1 bridge rectifier - Mouser 627-D15 XB 60H Shindengen

If you want a little more protection modify the board as follows:

1.replace only RT5 in its original location & move RT4 into the other ac input line in front of the bridge rectifier. (cut trace & drill solder holes)

2. Add: MOV (metal oxide varistor) across ac inputs of bridge rectifier.
Maida mdc-z481-8oul or D69 ZOV 481 RA 105
This arrangment is copied from a samsung power supply.

Be careful when plugging in the I/O box on the outside cover, if any pins are inadvertantly bend loss of picture will result.

I have pics if anyone needs them

Oct 25, 2008 | Protron PLTV-4250 42 in. LCD Television

1 Answer

Tv wont turn on


First reset the TV set by unplugging the AC cord for like 5 minutes. then plug it back on again, try turning on the TV, if it still dont turn on then I suspect a blown fuse or worse.

Jun 08, 2008 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

My TV cannot turn ON


1 check for short on HOT (horizonal output transistor) or bad flyback transformer. 2 check the AC voltage on the relay switching side. if AC voltage is not present on both pins and the relay is engaged replace the relay.3 check for shorts on voltage regulators you will need a schematic for this.

Jan 21, 2008 | Hitachi 27CX7B 27" TV

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