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Why won't it turn on?

Heat assistance is it the power supply for the seine board?

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Claude Kayser

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Fairly new TV will not turn on. - TOSHIBA FORUMS

forums.toshiba.com/t5/Televisions/Fairly...TV-will-not-turn-on/.../27334...
Feb 29, 2012 - My Toshiba 32dt2u1 television that I got this past Christmas will not turn on at all. I press the power button and it nothing happens. The green. Tv no power: Model 50L1350U
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Is my TV compatible with netflix? ... How do I reset my 32C120U tv so I can perform another channel scan? .... My tv won't turn on with remote or manually.

Free Fix For Toshiba 50" TV That Will Not Turn On. - YouTube


Posted on Jan 09, 2016

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I chance power board but yellow light is turn it on


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My tv will not turn on and the red led light keeps blinking..what should I do?


You will need to take it to a repair shop. Most likely you have a bad seine board or possibly a power supply issue.

Oct 14, 2009 | Toshiba 19AV500U 19 in. LCD HDTV

2 Answers

Tv will not turn on


Possibly not.. in this case with the 42HL167, the CPU pcb (most commonly referred to the SEINE PCB) is having issues booting and just isn't starting up.

My friend gave me his 42HL167 after this problem started after a power event during a storm and I managed to fix it by reloading the firmware.

I posted instructions on my website at:

http://www.benjammin.net/www/pages/techtips/Toshiba-Regza-42HL167.html

Once I figured out some of the facts, it was a breeze...

I posted this elsewhere here since there's so many duplicate threads... trying the firmware update is simple, so it's worth trying that first since the case doesn't need to be opened.

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Jul 10, 2009 | Toshiba 42HL167 42 in. LCD Television

2 Answers

50HP95 Toshiba Plasma TV No power but blinking power light


I had the same problem with my 50HP95 Toshiba Plasma TV. It would not turn on. I read online that if you unplug a connection on my TV and it turns on, it is a bad Seine board. I could not find this Seine board anywhere online. It was either out of stock or no longer available. The TV is just 5 year old. Why would they discontinue parts for it? Then I saw a video on You Tube where someone unplugged a connection in the back of his TV to fix problem. I decided to try it. I took the back off, unplugged a connection numbered PJ63A and the TV works again. So far so good. I downloaded the Service manual for this TV to find where PJ63A was.
I also called Toshiba Tech Dept. to find out if there was a chance I can cause further damage to my TV. They had no idea.

Mar 27, 2009 | Toshiba 50HP95 50 in. Plasma Television

2 Answers

Panasonic th-42pz77u 42ed


in protective mode the tv does not turn on and light is blinking, typically we must proceed by elimination as some faulty sections are preventing the tv to switch on. unplug the output power connectors from the power supply until the latter stop clicking. if it is still clicking after every of the output rail have been disconnected, then the power supply itself is faulty.

but anyway 3 circuit boards seems a lot to be replaced in a row.

hope this helps!

Mar 20, 2009 | Panasonic TH-42PZ77U TV

1 Answer

How to bypass seine card? 50hpx95


Turn off set, unplug power. Remove back cover. On brown circuit board left of center, unplug connector PJ63A. Plug in power, but don't electrocute yourself! If you no longer get the continuously blinking red light, hit the power button. If it comes on, the SEINE module is bad and must be replaced.

Dec 13, 2008 | Toshiba 50HPX95 50 in. Plasma HDTV

3 Answers

No power to toshiba plasma tv


This answer is for sjmhan: It sounds like you have a fault on the power supply board of the tv. Please before you open up your tv find out how to take basic precautions against electrical shock and how to discharge capacitors safely. First check if there is a glass fuse inside of the set and if it has blown replace it with one of the same rating. If you replace the fuse and it blows straight away or it still does not come on then it could be quite a few things. Either a faulty resistor or diode or voltage regulator or even the mains transformer itself. One word of warning: NEVER toucch any of the pins of the transformer as this cannot be tested directly without specialist equipment. If you find that it all is too complicated for you then dont feel like you have failed just re-assemble it and find a competant technician. Good luck.

Kimlong: I think you have a faulty component on the power supply board most likely a faulty diode. If you can check this for yourself otherwise find a competant technician. Hope this helps.

Sep 01, 2008 | Toshiba 50HP66 50 in. Plasma Television

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