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Thermally induced fault in plasma tv - Projection Televisions

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What are the symptoms and whats the model number?

Posted on Jun 26, 2008

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Why are there vertical red and green lines on the right side of my flat screen tv?


If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

Nov 18, 2016 | Samsung Projection Televisions

1 Answer

Tv picture issue What it could be the problem? Thank you in advance


If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD, Plasma & PTV screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

Oct 13, 2016 | Projection Televisions

1 Answer

My hitachi tv has a line about quarter the way up that goes all across the screen


If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the keywords "line fault", in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Jul 09, 2016 | Hitachi Projection Televisions

1 Answer

No pictuer no sound


your user manual will have the flashing light code structure indicating the fault that caused the shutdown there is no thermal fuse in your TV

projection TV`s have integrated protection circuits
built into the circuit design, these circuits turn the
power off automatically when a fault has bin detected this
is in order to prevent a more costly repair, these circuits monitor
power supply , vertical and horizontal deflection
over voltage, or x ray, and also faults with convergence circuits.
Diagnosing these faults require test equipment and a good knowledge of
electronic repair techniques, and also a repair manual.

Apr 28, 2010 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

TV KEEPS TURNING OFF BY ITSELF


If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |


On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem

On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.

On Rear Projection : check lamp, lamp ballast, power board, and convergence.

On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.

May 06, 2009 | Samsung HL-S5086W 50" HDTV

1 Answer

Wd-62525 tv timer light still flashing green even after turning set off and hitting reset button


If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |


On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem

On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.

On Rear Projection : check lamp, lamp ballast, power board, and convergence.

On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.

Feb 22, 2009 | Mitsubishi WD-62526 Projection TV

1 Answer

No picture


Common faults that give you no picture and sound on Plasma are often related to Sustain board, buffer and cables problem.

In this case the cost will be affordable, ans surely worth.

In the unlikely eventuality that instead you have a faulty plasma screen , or a faulty digital control board (main board), the cost of repair may be high.

The only way to find out is by having the TV inspected by a technician.

The most common fault that gives you no picture and sound on plasma is Sustain board , lower buffer, or connector, that is repairable.

Jan 05, 2009 | Projection Televisions

1 Answer

Hitachi 32" Plasma TV fault on screen thin pencil type line on left hand side of screen from top to bottom. Line thickness is approx 1mm TV is 5 years old Thanks Tom


iav a sky 42 inch plasma model number pd54250 when i swich it on i av got a green lined picture sometimes it comes on with a full picture can you help

Nov 22, 2008 | Projection Televisions

1 Answer

3 Black vertical lines on my Gateway Plasma TV


i just fixed my gateway 42"plasma with the exact problem.  go to this link, and read entirely and follow!
http://www.avforums.com/forums/plasma-televisions/462873-black-line-fault-hyundai-hpt4240-fixed.html

enjoy!
stephen

Oct 30, 2008 | Projection Televisions

1 Answer

Got 2 vertical black lines running down my plasma tv


this will work for you!
http://www.avforums.com/forums/plasma-televisions/462873-black-line-fault-hyundai-hpt4240-fixed.html

st

Oct 12, 2008 | Projection Televisions

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