Question about Toshiba TP55F80/81 55" Rear Projection Television
The power supply is in protect mode. There is most likely a short on one of the boards, or the high voltage generator, or a scan amplifier, or the power supply itself has a failure. Without troubleshooting the set it is impossible to know.
Posted on Feb 23, 2009
Thats a common problem when the caps on the DM need replacement. They will function fine untill power is interupted then the set will not complete the boot sequence when power is reapplied and the led will just continue to blink. Hers a link to the kit that will usually repair that issue the kit comes with instructions.
Posted on May 09, 2009
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
This TV could have one of several problems including but not limited to; convergence IC's,bad capacitors, shorted horizontal output transistor. Call a good TV Tech. Check with the BBB before you decide on one.
Posted on Jul 29, 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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