Question about Panasonic PT-47WX53 47" Rear Projection HDTV

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Come on then line horizal across screen then turs off

Turn tv on
horizal lie across screen
then goes off

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Horizontal line (up and down) is know as horizontal collapse. This is usually located around highvoltage section of the circuit. Because this circuit depends on certian frequencies and voltage protection circuitry will shut the set down. This will need a trained tv technician to fix this and can be expensive depending on the parts needed.

Posted on Mar 13, 2009

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After cleaning the lenses on my 60P8342a tv and turning the color buttons in the back my tv is shutting off and on and I have a flashing power button, no pic or sound at times


How long was it back befor you turned on this potentiometers ?

Dust and more can be come into the potentiometers of a crt (cathode ray tube) projetion tv in the years that its old it is not strange.
Ist an older kind of model of projection tv.

Treat them with contact spray , also not only red the r g b potentiometers but all the potentiometers that are parts of the convergention panel. and adjust them on a screen with the base saturation of color to zero so you adjust a good gray tray with a balans without a red brown or green or blue surplus so that you have white gray black in balance if you have adjusted , tur back on the basic color saturation to your prefered level.

Chances are pretty good that the weather will be fine.
To see some brown spots on the board and replace any carbon composite resistors for carbon or metal film resistors in the print because of high tolerance over this kind of resistance.

Feb 21, 2016 | Projection Televisions

1 Answer

Is Worth Fixing Panasonic PT-50LC13-K Rear Projector TV


most likely a bad mainboard or bad caps in the power supply. Borderline on the repair-ability. I would check Shopjimmy.com to see if used parts are available. If they are it may be worth it.

Sep 14, 2015 | Panasonic PT-50LC13 50" Rear Projection...

1 Answer

Projection TV no picture flashing horiz arcs across top of screen sound okay


You will need convergence work to this unit. Not cheap.(Not recommended for DIY unless already experienced in this type work). Might contact a local servicer experienced with Toshiba & see if they can give you a quote over the phone. Be sure you are sitting.
This is probably a good time to consider entering the 21st century & look at LCD or LED flat screens.

Jul 24, 2014 | Toshiba Projection Televisions

1 Answer

When we turn on the tv it will stay on for maybe a minute, then the screen goes off, but the sound remains


Hi, the tv set goes to protection mode because
theres someting wrong in highvoltage circuit
and may be the convergence board the 12 volt circuit
still run that why you have sounds remain..
on the convergence its usely the stk module defect
and the hv circuit have some defective regulator horiz driver transistor; icant do any more from here
hope that help to trouble shoot your problem
have a nice day

Mar 18, 2010 | Projection Televisions

1 Answer

When we turn on the TV it goes to standby and will not change


Switch mode power supply is shutting it down,,this is a protection mode and standby light shows it is still working,,most likley it has a horiz sweep failure,,if you know how I would check the Horiz output to see if it is shorted,,if so replace and if you have equipment bring it up at around 80 volts and see if current is excessive ,if it is you possible have a horiz sweep transformer gone bad, this is most likley problem but could be somthing else but this is where I would start,,35 years experenice in this field and today I despise working on big screens,,kinda burnt out .You might also note that the tubes have not leaked onto the board as there is some models done this,,you will see corrision on boards if this has happened
From Wendell

Aug 04, 2009 | Sony KP-61V90 61" Rear Projection...

1 Answer

Power


Sounds to me like its your green tube. Kind of expensive replacement, but easy.

Jul 24, 2008 | Sony KP-51HW40 51" Rear Projection...

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SONY KP-46WT520


does the led blink when it shuts down if so how many times does it blink? And the green line is that running up and down the screen or across the screen?

Apr 26, 2008 | Projection Televisions

1 Answer

Blue lines across screen sony tv


blown fues on the G board, that should fix my problem
and or might need to replace stk392 convergance amp ic's
· http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Dec 05, 2007 | Sony KP-46WT500 46" Rear Projection...

2 Answers

Mitsubishi cs-35401television


HORIZONTAL FAILURE AND LINE DOWN THE SCREEN. REPLACE T5A1 LOCATED ON PCC-3-PCB. PT#349P145030(FOR CS-35401,CK-35402 ONLY) Hope this helps! Troy

Sep 11, 2007 | Projection Televisions

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