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Blank screen after brief picture (failed inverter) relisys 1730

I need a spare or advice on fixing the backlight inverter on a relisys lv87e television

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  • 105 Answers

With the PWB removed from the TV, Measure across the outputs from the Transformer. The impedance(resistance) will be the same for all the outputs. You can find all open and some shorted outputs this way.

The DC input voltage is generally split amongst the Output transformers. you can pretty much measure from ground to points on the circuit checking for opens and shorts

Those things that look like a signle FETs are acually 2 FETS with the outputs tied together. This is tricky because if you are looking for a Single FET opposed to 2 you don't diagnose them properly. (this is only for the generic inverters provided with Samsung, CMO, LG,etc. Companies like Sylvania and Funai make their own so although the circuits the same it will be more obvious whats going on).

Just know that the inverter is usually composed of 2 to 4 identical circuits. Seperate the circuits then compare 1 to the other looking for differences. That difference is usually the defect.


Posted on May 27, 2009

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I have samsung N120 Laptop.display has gone blanks but I can hear windows startup voice


Hook a spare monitor to the video output usually on the back, if picture okay! the inverter board is defective, " just below the LCD screen" or the backlight has failed, "just behind the display" but if both show the same symptoms it is the video graphics card normally built into the motherboard.

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A brief flash of picture then black


A brief flash of a picture few sec. and the tv LCD screen panel go black.The tv still have audio sound left?Yes,tv have 1 or 2 the long board that call the LCD inverter boards it is dead.The inverter boards only job are too provided a backlight for the tv LCD screen panel to see a picture.

Aug 28, 2011 | Proview HX303 30 in. HD-Ready LCD...

1 Answer

Hi, The problem with my Monitor is that after the


That LCD monitor uses a fluorescent backlight, and the symptom you are seeing probably means the backlight is failing. There are two possible problems:
1) Likely: The inverter board is failing. The inverter creates the high voltage needed to run the backlight and can shut down after a short time if the board is failing.
2) Less likely: The fluorescent tubes themselves are failing. This usually requires replacing the whole LCD screen, although experienced technicians can disassemble the LCD screen and change the bulbs. This is much riskier.
The best bet is to replace the whole monitor. If you are willing to take apart the monitor and try a repair, you may be able to get an inverter and fix the problem.
Sellers on eBay usually carry a lot of models of inverters and may be able to sell you one and guide you through a replacement. However, this is a moderately advanced repair.
Search for the HP exact model and "inverter" on eBay

Apr 11, 2011 | HP Vs17 17" LCD Flat Panel Monitor

1 Answer

Where can I get a free digital user guide for a Relisys LV87e television?


If you were to log on to the manufacturer's web site, I think you will be pleasantly surprised as usually one is able to download, by model number, Customer Instruction Manuals, list of Dealers for spare part supplies and Driver downloads as required.

Just Google the manufacturer's name and follow the links. Make certain you are directed to the manufacturer's web site as some search engines direct you to other sites and they charge for the information that is normally free of charge.

I hope this helps.

Dec 24, 2010 | Relisys RTL1720 17 in. LCD Television

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My Dell flat panel monitor flashes on and off what can i do to fix it...


You may have a defective CCFL backlight, it may have the following symptom: Screen flashs on red/pink and off. Picture stays on in red and slowly be come normal. Picture flickering with dim display or appear black. Picture flickering on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp.
Connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out
www.lcdparts.net

Sep 14, 2009 | Gateway FPD 1730 17 in. Flat Panel LCD...

1 Answer

Blank Display, using exernal monitor, can see display info w/flashlight, display flashes light at startup


You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

May 03, 2009 | Toshiba Satellite A135-S4407 Notebook

1 Answer

I need a code for a tevion universal remote


Tevion is made by Medion..

The only code I find for them is 191

Good luck..

Dec 01, 2008 | Universal Remote Control 6-Device...

1 Answer

Monitor goes blank


I was thinking about your problem, I just had a similar issue and the problem is that the inverter or the power supply with an embedded inverter had gone bad.

The reason it goes black is because the inverter fails to provide power to the LCD Display.

The only way to fix this is to open up the FPD:

*note these are instructions for the most popular FPD 1730*

1.there should be four screws on the back --> plus two large screws that hold the FPD stand and the Monitor together.

2.Open the back by pulling the cover off
Remove 7 screws holding the frame and the power button for the LCD

3.Remove two screws through holding a silver cover and remove cables.(pinkwhite) (blackwhite)
Please note where they belong before removal**

4.On the edges left and right are two screws 4 total ---> remove and remove LCD off of frame**becareful because the backlight Damaging can cause severe damage to your LCD panel.

5.Choose your model
Your FPD has 3 boards (power, inverter(backlights) Logic Video)
replace the inverter with well known good one

Your FPD has 2 boards(Power with inverter on edges, Logic Video)
replace the power board with a well known good one

6.Then do steps 1-5 in reverse order(putting your FPD back together.

I hope this is significant help



Sep 11, 2008 | Gateway FPD 1730 17" Flat Panel LCD...

1 Answer

RELISYS 17inch LCD TV


Hi...there,
2yrs it long enough...some only got 1yr. Hehehe... You'll need to replaced a new backlight inverter.
Good lucks!

Aug 01, 2008 | Relisys RLT1720 17" LCD Monitor

1 Answer

Screen going black, green LED staying on


Check to see if the image is Dimmed. Chances are the power supply on the FPD is either dead or not supplying power to the back lights.
Your problem is the power supply or the inverter on your board, you can replace it and it will be fixed.
Easy Fix REALLY EASY FIX
(inverter is what supplies power to your backlights. A lot of the times the reason a monitor goes black and the green power button is on, is because the backlights shut off. in most designs of the 1730 the inverter is embedded on the power supply. That is most often the case on this problem. Power supply/Inverter=Replace it and you will have a spanking new looking nice monitor working again. :)

Jun 19, 2008 | Gateway FPD 1730 17" Flat Panel LCD...

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