Question about Toshiba 50H81 50" Rear Projection Television
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Posted on Jan 02, 2017
SOURCE: toshiba projection tv
your set has a problem with the power supply causeing the set to shotdown. You can get a manual called Toshiba shutdown circuits and power supply troubleshooter that takes you step by step to diagnose your model its available at this link they email it to you almost instantly after purchase and they also provide free tech support in case you need further help. heres the link.
Posted on May 12, 2008
SOURCE: sony projection tv no power
I purchased a service manual for $16.99 from ServiceManual.net. I downloaded the manual. Read it and you have to make note of how many times the power LED blinks red. My 55" Wega was blinking 6 times then pause then repeat.
The manual indicated it was a "Low B error, No "DD 6V" output ( G1 Board) No picture/No Sound.
The manual gave me instuctions on how to remove the G1 Board. I took it out and clean off the dust reseated the G1 Board, still the same problem. I order an new G1 Board, part# A-1060-177-A from the "Partstore.com" for $186.25
Problem is fixed and I save $350 on service call.
Bobby G aka poolmvp1
Posted on Jan 02, 2008
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.
Posted on May 22, 2009
The same problem happened to us. We have a 56' Toshiba DLP rear projection. We've had it going on5 yrs now. Whenever the picture fails to come on and the on/off blicks. But you can hear the audio, it's likely you blew your lamp. Lamp replacement for these types of units are quite easy. You'll just have to find out the size and search online to find the best price. And actually, trust me-an 8 yr old could replace the lamp-it's that easy.
Posted on Aug 13, 2009
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