Question about Toshiba TW56X81 56" Rear Projection Television

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Toshiba tw56x81 rear projection tv "protection fault"

Protection fault pops on the screen and the power light flashes, will not come on

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Try unplugging and waiting about 2 min. Then retry. There is a self protection circuit which is what is stopping the unit from coming on, but it can be triggered by many things. [Units this old are famous for the capacitors (electrolyte dries out and then they blow), but that is just the most common problem. I would look the capacitors over and see if they give any indication of being "blown" (discoloring, etc.) and replace them if they do.

Posted on Feb 18, 2010

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Need a bulb for a Toshiba RPTV, model TW56x81, but can't find the part number?? Thanks


Toshiba 23003818 Picture Tube Assy, Coupling, B [V903b] Toshiba 23003781 Picture Tube Assy, Coupling, G [V902g] Toshiba 23003817 Picture Tube Assy, Coupling, R [V901r] Here's the part numbers for each of the CRT's. This set doesn't have a single bulb like you mentioned. Your problem is most likely elsewhere in the power supply or Horizontal output circuit. Good luck

Bill W
integrityhomeworx.com

Mar 22, 2011 | Toshiba TW56X81 56" Rear Projection...

1 Answer

Toshiba TW56X81 power LED blinking ,tv won't turn on


Try unplugging and waiting about 2 min. Then retry. There is a self protection circuit which is what is stopping the unit from coming on, but it can be triggered by many things. [Units this old are famous for the capacitors (electrolyte dries out and then they blow), but that is just the most common problem. I would look the capacitors over and see if they give any indication of being "blown" (discoloring, etc.) and replace them if they do.

Oct 17, 2009 | Toshiba TW56X81 56" Rear Projection...

1 Answer

Toshiba tw56x81 plug it in and it makes a


you have freid the fuse inside it its a cheap and easy fix i have anserd 3 allready todsay on this problem it is very common and under £50 to fix

Sep 19, 2009 | Toshiba TW56X81 56" Rear Projection...

1 Answer

My tv will not turn on the power light comes on


After the power surge , the TV went 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 after power surge on a rear projection are a blown capacitor on power board, a component on ballast board has blown, or a fault on Digital board had occurred.

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.

Sep 10, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Shut off tv and will not turn back on the power light just blinks what do i do ?


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.

Jul 03, 2009 | Toshiba 43H70 43" Rear Projection...

1 Answer

Red light keeps flashing tv will not turn on


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.

You can find parts here,

Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

Electronic Replacement Parts: Plasma & LCD TVs, Appliances |

Mar 30, 2009 | Toshiba 57H82 57" Rear Projection...

1 Answer

Toshiba 50HX81 projection 'tv- blinking red light


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.

Jan 27, 2009 | Toshiba 50HX81 50" Rear Projection...

1 Answer

Toshiba 46H84 tv turned off light blinking


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.

Sep 17, 2008 | Toshiba 46H84 46" Rear Projection...

1 Answer

Wobbly lines on my Toshiba TW56X81


This sounds like a input problem. The source of the signal may not be well matched to the expected input spec. To test, see if the "SETUP" menu items are clear. If so it is something to do with a cable, connector, or configuration of the source.

Mar 12, 2008 | Toshiba TW56X81 56" Rear Projection...

1 Answer

Toshiba TW56X81 Convergence issues


I retired from the TV repair business because if you are not an authorized repair service center most manufacturers will not even talk to you. If you are electronically inclined you can repair this tv. your problem is a bad convergence ic. you need to be able to locate it and replace it. it probably has about 15 or 18 legs that need to be unsoldered and a new replacement re-installed

Sep 29, 2007 | Toshiba TW56X81 56" Rear Projection...

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