Question about Dell W1700 17 in. HD-Ready LCD Television

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No picture....just blank screen.

Some people has told me it maybe my backlight or LCD Inverter that is bad, but I don't know...if anyone can give some help on how I can troubleshoot the problem, that would be great! I currently have the 'back cover' removed but don't know what to do from this point on.

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  • eluder Dec 03, 2008

    honestly, I could not figure out how to change the channel to "watch" a DVD so I can see if I can hear sound or not. I have turned it  ON and turned the volume UP and I can not hear anything. Not even static sound.

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Hi can u hear sound, if yes ,copy ur lcd name& model no &order for the inverter . then when u see that u will be able to change it .

Posted on Oct 19, 2008

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2 Answers

Screen blank but sound ok


This problems the two long circuit boards called the inverter board is dead.These two long inverter boards give ur tv a screen light called a backlight that where ur tv getting it light for the tv images.Take ur tv a parts and replaced these two long inverter boards.U will get ur tv picture back.Tries websites like Shopjimmy.com,Ebay.com to buy those two long refurbish inverter boards for the replacement.

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Mlt3221 screen went blank, with a bit of smoke at the back of the TV, then there was no video, just audio.


Check the power supply for bad or bulged electrolytic caps , or replace power supply board.

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My samsung LE40R74BD set works fine for about 10 mins then screen goes blank (black) . It would appear there is no back lighting. I have visually checked the psu for blown capacitors but all seem to be...


This does not seem to be a power supply issue but rather an issue with the backlight inverter board. When the screen goes black, take a flash light and focus it on the screen from a close distance and several angles. See if you notice a very faint image. Try changing the channels to make it more noticeable. Try it and let me know

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1 Answer

The picture wont stay on the screen, sound will work, but i cant see it (the picture), if i turn it off for a few minutes and then turn it back on it works for a little while, but eventually it will go...


This is a backlight issue. LCD televisions require a light to be on permanently behind the visible LCD. This is usually provided by tubes called CCFL or cold cathode flourescent lamp. There will be multiple lamps arranged around the edges of the screen. It sounds most likely to be a due to one or more bad capacitors, which can be easily replaced by anyone experienced with electronics.

It could be a faulty inverter transformer but this usually causes the backlight to switch off within seconds of switching on due to protection circuitry in the inverter controller circuit. If the inverter circuit is faulty then the inverter board can be replaced.

If you are not competent with electronics then take your TV to be repaired by a qualified Tv repair engineer.

Feb 12, 2011 | Vizio Flat Panel Televisions

1 Answer

Video comes on but I lose the picture in 3-5 minutes, screen goes blank.


U still have sound,when screen go black?Than ur LCD inverter backlight board is dead.Replaced this LCD inverter backlight board,will get ur picture back.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter backlight board for the replacement.

Mar 17, 2010 | Vizio L37 Television

1 Answer

When i turn the t v on i get maybe one second of picture and the screen goes black but i still have sound


Ur LCD inverter backlight board is dead.Replaced this LCD inverter backlight board.U will get picture back.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter backlight board for the replacement.It a long board in shape.

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2 Answers

Picture great then goes black


Ur LCD inverter backlight board is dead.Replaced this LCD inverter backlight board will get ur picture back.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter backlight board for the replacement.It a long board in shape.

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1 Answer

PLTV 26 LCD TV sound-no picture


I would suggest to check the 24 volts from the power supply to the backlight inverter board. If the voltgage is missing or lower then 20 volts, the power supply is defective. If the voltage is correct, you might have a defective light inside the TV behind the screen since you've replaced the backlight inverter board; you now the failure is not there. The lights are connected to the backlight inverter board.
Let me know if you need further assistance.

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1 Answer

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If the backlites are on the it is not the inverter or power supply. Better look at the digital / Main board.

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