Question about Sanyo DP50747 50 in. Plasma TV

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TV shuts down after a few seconds no picture comes on

Its almost like a forced shut down to protect info in your computer

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I have LCD AKAI TV , It shuted down and no picture . Power never changes from red to green when I press remote control or standby button.

Posted on Oct 03, 2009

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Anyone know how to fix a Panasonic Viera 50" Plasma that powers off a couple seconds after powering on?


tThe diagnostic circuits is shutting your TV down. In most cases the set will shut it down immediately. Apparently your set hasn't shut completely down yet. When you turn your TV on the diagnostic circuits send a low voltage, low frequency signal through all the circuits and depending on how they come back whether the sets powers up to full power. If a problem is detected it will shut down to protect the other circuits. It sounds like you might have some capacitors going bad on your power board. A capacitor that is going bad would let it come on for a few seconds then the diagnostic circuits would see the capacitor getting further out of tolerance and shut the set down. If you are a DYS type person you might want to lay it flat of it;s face and remove the back. A bad capacitor will be bulged out on the top. are Replace capacitors with the exact uf value and if you can go above the rated voltage but never below., If this isn't the problem then it is probably the main board (the board where your cable hooks up to), There are other things that cab causes for this but I would check the capacitors first.
Col. Dana Gillespie

Sep 09, 2014 | Panasonic Viera TH-42PZ80U Plasma TV

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Help


A component in the TV is failing and is not receiving correct voltage, which is causing the TV to enter " protection mode" and shut off. Could be any part of the TV but I would start with the power supply and go from there.

Here is some basic info on testing the power supply.
TV Power supply general info

Jun 07, 2012 | Sanyo DP50747 50 in. Plasma TV

1 Answer

Why is my 50 inch sanyo plasma power up with no picture then shutting down after a few seconds


A component in the TV is failing and is not receiving correct voltage, which is causing the TV to enter " protection mode" and shut off. Could be any part of the TV but I would start with the power supply and go from there.

For more info post the model number of your TV

Here is some basic info on testing the power supply.
TV Power supply general info

Jun 07, 2012 | Sanyo DP50747 50 in. Plasma TV

1 Answer

I power on tv and it shuts down after few seconds


There is a high voltage leak here, the reason it closes down is the protection mechanism isw trying to prevent more damage. better to turn it off and have it repaired before it catches fire or blows all the boards and becomes totally useless or beyond repair.

Sorry this isnt what you wanted hear but there is a safeyty factor involved here.

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Aug 31, 2009 | Mitsubishi WS-55807 TV

1 Answer

Emerson EWC 1302 Tv/VCR combo shuts down


As I told you, when the tv main chip detects a problem, it force the TV in protected mode, and activates an internal safety switch to turn tv off.
This is why TV goes off in ten seconds.

when this happens TV must be taken apart and inside component tested and eventually replaced.

The technician will test the inside of your TV starting from the power supply board.

If you want to do it yourself you will need experience in testing and precision soldering, otherwise call a repairman using the phone number listed in the user manual.

Sep 15, 2008 | Televison & Video

1 Answer

No picture sound is fine


tv comes on then turns blue at that time it shuts down. The power is on and then it blinks 5 times!!!

Apr 27, 2008 | Sony KP-65WS500 65" Rear Projection...

1 Answer

KP-46S4U lose picture after a few second blink of brightness


does the from led blink if so how mant times pause then blink again?

Feb 12, 2008 | Sony KP-48S65 48" Rear Projection...

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TV shut off will not stay on.


Sounds as though you have a video problem. It may be the convergence chips. The TV is shutting down do to a default in the circuit ( the set knows there is an error of somekind so it shuts down to protect itself). This is a problem that needs a pro trouble shooter since it could be in about any board. Sorry I couldn't help more
Ed
NC Electronic
Mills, Wyoming

Jan 07, 2008 | Mitsubishi VS-55707 TV

1 Answer

Kv32hv600


This is the problem in vertical section. There is no vertical drive pulse continuously from deflection processor. May be dry soldered in vertical output section or failure in jungle ic setion. Without getting continuous pulse from system the processor shuts the tv to the protection mode. This can be serviced by the qualified technicians only.

Sep 14, 2007 | Sony FD Trinitron WEGA KV-32FS120 32" TV

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