Question about Toshiba 55H70 55" Rear Projection Television

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Model 55H70 Toshia

TV was moved from one house to another in temperature of 40. Light comes on but no picture is this because TV is too cold. Do we just let it warm up?

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Remember the old VCRs, which would tear up your tape if you took it into any kind of environment that could create dew inside?

This could be happening here too. Let it warm up for a day and try again.


Mr Bob

Posted on Feb 03, 2008

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My toshiba 55H70 was working fine, then all of a sudden went out..no picture..red power light comes on and then after a minute starts blinking...can get no picture however


It is probably your horitzontaltransistor that is shorted and it will have to be replace and it is located need the fly back transformer, on a metal heat sink, and to have it repair you are looking at around 400.

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Recently I moved my tv by truck to another home and it was very cold out( winter in massachusetts) the tv had some condensation then plugged it in and it was working fine for 4 hours or so...while changing...


There is no question in my mind that the extreme cold is the prevailing factor. Depending how long the set was in the cold determines the time needed at room temperature before you even plug it in. I have recommended up to 24 hours before the set is even used, because parts heat up rapidly when first turned on there is a greater chance of failure especially when it comes right out of the elements. From your description it sounds like one part has failed shutting the tv down and it is probably in the power supply, in my opinion it is worth getting it checked out.

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Toshiba projection TV. Bulbs wont come on


The deflection board in failing, eventually it will not come on at all, disconnecting power is only reseting the HV shutdown protection circuit which is the reason your set if failing. Have a technician replace the Horizonal Output Transistor and the flyback transformer.

Please comment if you need futher assitance.
Delhielectronics@live.com

Sep 29, 2009 | Toshiba 55H70 55" Rear Projection...

1 Answer

I have a Toshiba Projection Television (Model 55H70) that sometimes powers itself off. Sometimes it will come back on if I hold the power button down for several minutes and sometimes I have to cut power...


if your tv was made in 2008 that could be the problem because some of theToshiba that model had a defect if you contact the head couters 18004577777 they will most likely will send over a worker to fix your problem. thank you

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sounds like loose connections on the convergance amps ic's
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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Get it fixed, because this is a simple repair. One of your convergence IC's has burned out and needs to be replaced. A good tech can fix the set in-house in about an hour and a half, and I charge $150 when I fix a set like that but shops in your area will vary so ask around. If you have a satellite receiver or a cable box, the changeover in 2009 should not affect you.

Sep 04, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

Toshiba 55" 55H70 model. Turns OFF, but won't turn ON until I unplug it from the wall first.


sounds like loose connections on the convergance amps ic's
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Aug 22, 2007 | Toshiba 55H70 55" Rear Projection...

1 Answer

Screen zipped down to dot of light in center and went blank. No audio either


the deflection circuit shut down and i hope it didn't burn the crt's .

Oct 29, 2006 | Toshiba 55H70 55" Rear Projection...

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