Question about Toshiba 50HX81 50" Rear Projection Television

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Toshiba TZ50V51 TV went off, won't come back on, indicator light flashing. I have unplugged it, put new batteries in remote, reprogrammed remote,etc. noting works. it is not the outlet because I have a surge protector and dvd player is connected

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Re: Toshiba TZ50V51

First step is to use an ohmmeter and check all fuses including
small,soldered in kind called micro-fuses.....F850,F851,F852 etc

Posted on Mar 15, 2008

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My tv keeps turning on and off by itself sometimes just once sometimes as many as a dozen times in a row, its like its possessed! Its driving me crazy what do i do?

check the batteries in the remote also try putting the remote in another room. I have seen the remote cause this problem in zenith tvs as well.

Feb 20, 2009 | Toshiba TZ50V51 50" Rear Projection...

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Toshiba TZ50V51

You should test a couple of things. If you have a fairly good dmm (digital multi-meter) or like analog meter set it for continuity. Test F860 a small 5 amp pico fuse for open. If open suspect Q801, Toshiba p/n# 23906253. Replace it and the pico fuse.
If nothing open there next test F470 a 3 amp pico for open. If open replace it and the horizontal output transistor 2sd2553, Toshiba p/n# 23314955 and Z450, your voltage divider, Toshiba p/n# 24082877 or its generic equivilent Tpa5007bh. Also replace D478 off the base of Q470 for good measure. D478 is a 30v zener diode.
If you have any trouble with what I've written here print it out and find a good shop. They'll easily understand what I've outlined here and it will better help them in testing and determining the problem.

Nov 05, 2007 | Toshiba 50HX81 50" Rear Projection...

1 Answer

Toshiba TZ50V51 - Power light flashes, tv won't turn on

It is hard to say Toshiba is one of the few manufactures that have good step by step procedures for diagnosing ad repairing your television. There is a manual called Toshiba power supply and shutdown circuit troubleshooting. This is a valuable asset to save hundreds of dollars on repair. You can get this manual at the following link it has your model covered in it for 10.99. It is on page 2 of the toshiba section bottom of page. They will even email it to you if you are interested in trying to repair your own set. Hope this helps here's the link.

Jan 24, 2008 | Toshiba TZ50V51 50" Rear Projection...

2 Answers

Power indicator light blinking

Check soldered in micro fuses...F850, F851 etc.....
1) solder jumper wires on signal board = 008,010,017,048,600
2) Check / replace STK392-110 convergence IC's with Toshiba
part # 23135090 or upgade to Hitachi part # CZ01341
Let me know....................T.

Jan 04, 2008 | Toshiba 65HX81 65" Rear Projection...

1 Answer

Power light flashing/ no picture

I have the same problem. The only way to get the TV to come on is to unplug it, but once you get it back on it turns itself off again in a few minutes.

Jul 11, 2007 | Toshiba 56H80 56" Rear Projection...

1 Answer

Flashing Power Light

Toshiba rear projection with blinking LED =

1) Open micro fuse F850,851,etc....caused by

2) Bad solder connects....jumper wires 008,010,017,048,600
re-solder all and solder STK392-110 convergence amp pins.

3) Or consider replacing original IC's with improved version...
STK394-160 = Hitachi part # CZ 01341


Aug 30, 2006 | Toshiba 53H71 53 in. Rear Projection...

1 Answer

Toshiba tz50v51 popping sound

Possible problems: * The TV set may be unplugged. * A fuse or circuit breaker may be blown or switched off. * The remote control unit (RCU) may be disabled. Solutions: * Make sure the TV/VCR are plugged in and the wall switch is on. * Check the fuse or circuit breaker. Test the outlet with a lamp. * Replace the RCU's batteries: if this fails exchange the unit.

Jan 18, 2006 | Toshiba TZ50V51 50" Rear Projection...

8 Answers

TV auto shut off-power indicator light blinking-won't turn back on

You could have gotten an electrical surge that put your set into a shutdown condition and unplugging the set and letting the Microprocessor reset will fix this problem if it dosent blow out the main power regulator as you still or might I say have a regulator IC problem. IF THIS PROBLEM HAPPENS AGAIN MORE THEN A FEW TIMES WITHIN A SMALL TIME FRAME I WOULD HAVE THE SET LOOKED AT BEFORE THE REGULAOR BLOWS SOMETHING OUT!!!!

Jan 11, 2006 | Toshiba 43H70 43" Rear Projection...

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