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Elfunk 37781 fhd

On My elfunk 37781fhd the screen sometimes goes partly black. I can see the picture behind the black fields. Of i tap the back wall

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: 42" Philips plasma screen goes black

You have a Ysus problem. Sounds like a cold solder joint or loss connections on ysus main board.

Posted on Jun 07, 2008

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SOURCE: Picture goes black on bottom half of the screen

You have a bad connection to the panel or bad caps on the boards. Not something for the DIY'er. High voltages in plasma sets.

Posted on Mar 31, 2010

gopakumarg43
  • 74383 Answers

SOURCE: Sanyo 24 in flat screen

Hello
Your flat panel TVs picture tube base board has soldering loose contact with it. Just unplug your TV from AC mains socket, and open it. Pull out the picture tube base card from the picture tube neck. Pull it out straight, no shake must be there, as it will damage its connecting pins.
Normally, loose sodering are very difficult to loacate, as they will be quite micrscopic in size. Just resolder all the suspected loose sodering point on that board, by applying a little more solder. This will solve your TVs problem. OK.

Posted on May 26, 2011

Testimonial: "Going to try resoldering all the connection,as you stated only seam logical if hard to find, do them all. thank you. PS. I was not thinking..."

  • 517 Answers

SOURCE: I have a Sony CTV

Good day!!!



That problem is usually cause of faulty capacitors on the power supply board..

Just follow this instruction to fix your TV..

1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
5. Some of the capacitors not bulged so its better if have a capacitance meter

Posted on Sep 02, 2011

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1 Answer

Haft of the screen is black.


Most likely, it is some capacitors in the inverter or power circuit that is dying. Check out http://www.fixya.com/support/r7406380-tv_training_manuals

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You have answered your own question, someone needs to open it and find a loose plug or broken solder connection--if it reacts to being tapped on that is the issue- a physical problem inside.

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1 Answer

Screen goes black


here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main digital board.

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No picture, sound ok


I have a similar issue. Sometimes the entire screen goes black and sometimes only one-half - either the top or bottom half goes black. The only solution we have found is to gently tap the TV (usually the front side) and the picture will come back for awhile. It almost seems heat related as it only goes out after the first 10 minutes of use. There must be a fix to this.

Aug 25, 2008 | Philips 42PF7320A 42 in. Plasma HDTV

1 Answer

42" Philips plasma screen goes black


You have a Ysus problem. Sounds like a cold solder joint or loss connections on ysus main board.

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1 Answer

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This must be a loose connection on the lcd behind the lid or in the hinge, I would not atempt a repair, laptops are a nightmare, take to a specialist repairer.

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