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

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Dell W1700 17" HD LCD

I changed the backlight inverter that I ordered from LCDparts and I got the picture back except it is as I describe it cartoonish or lacking black. Any thoughts?

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Analyse your picture quality futher

Posted on Oct 11, 2008

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How to fix element flx-3210 that has sound but no picture?


It's probably a backlight or backlight inverter issue if the problem occurs on all sources and the onscreen menus. (The backlight itself usually fades or makes the on-screen image change to pink/red.) With a bad backlight, you'll usually see a very dim image if you look at the TV from an inch from the screen. Block the room light from overwhelming this image (sometimes a carefully positioned flashlight will help you see something). If the inverter or video board is bad, you will see nothing. For an out-of-warranty TV, open up the back of the TV and remove the shielding. Look for any scorch marks or bulging or damaged capacitors. (Sometimes other parts will fail on this part but these can be spotted easily. Capacitors look like cylinders on a tripod.) The scorch mark and smoke may indicate a resistor or zener diode that had been used as a fuse and is now gone.

If you borrow (or have a) high-end multimeter (able to measure high frequencies - 50 kHz) or an oscilloscope, hold the multimeter probes a fraction of an inch apart about an inch above the inverter board and power up the TV. If you see a 1 or an actual value, you have a good inverter. If you see a reading near 0, the board is bad or the multimeter can't resolve the frequency.

In either case, you can buy a replacement inverter for $50-150 and just do a simple swap. Disconnect all of the wires (connections are similar to molex and ribbon cables in a computer) and remove board (a few screws usually). Connect the cables to the new inverter. (If you google backlight inverter replacement, you'll find videos and text descriptions.) Note the part number on the board, including the Rev number, and order the exact one (shopjimmy.com or lcdparts.net are good starting points). Universal inverters do exist but can result in reversed controls (up to lower the brightness). Replacing individual parts on the board is cheaper but more prone to not tracking down all of the bad parts.

If the inverter is good, then it's probably backlights themselves (several in most TVs). These are sandwiched on the perimeter of the TV (usually under some tape that holds the lamp, reflector and other parts together. You need to order by length and width and get ones for your TV size. Separate the panel from the bezel. Remove the tape, and separate the reflector (make a note of how things are put together) then you have to Dremel (or use another rotary tool) to remove the plastic to get the backlight out. (They are often molded into the frame.) Then put in the new backlight and reassemble everything. See http://www.lcdparts.net/howto/default.aspx for more information but for an overview: http://www.inventgeek.com/Projects/BacklightFix/overview.aspx. Then push the new backlights into place, reconnect the wires and close up the sandwich of tape and other parts around the screen. Then replace it in the bezel.

With a good spare backlight, you can test an inverter for condition (plug together and turn on the tv while the box is open). Similarly a good inverter can test the backlight.

I hope this helps.

Cindy Wells

Jan 05, 2011 | Element Electronics FLX3210 32 in. LCD TV

1 Answer

Has sound no picture. screen is black


It's a backlight or backlight inverter issue. (The backlight itself usually fades or makes the on-screen image change to pink/red.) For an out-of-warranty TV, open up the back of the TV and remove the shielding. Look for any scorch marks or bulging or damaged capacitors. (Sometimes other parts will fail on this part but these can be spotted easily. Capacitors look like cylinders on a tripod.)

If you borrow (or have a) high-end multimeter (able to measure high frequencies - 50 kHz) or an oscilloscope, hold the multimeter probes a fraction of an inch apart about an inch above the board and power up the TV. If you see a 1 or an actual value, you have a good inverter. If you see a reading near 0, the board is bad or the multimeter can't resolve the frequency.

In either case, you can buy a replacement inverter for $50-150 and just do a simple swap. Disconnect all of the wires (connections are similar to molex and ribbon cables in a computer) and remove board (a few screws usually). Connect the cables to the new inverter. (If you google backlight inverter replacement, you'll find videos and text descriptions.) Note the part number on the board, including the Rev number, and order the exact one (shopjimmy.com or lcdparts.net are good starting points). Universal inverters do exist but can result in reversed controls (up to lower the brightness). Replacing individual parts on the board is cheaper but more prone to not tracking down all of the bad parts.

If the inverter is good, then it's probably backlights themselves (several in most TVs). These are sandwiched on the perimeter of the TV (usually under some tape that holds the lamp, reflector and other parts together. You need to order by length and width and get ones for your TV size. Remove the tape, and separate the reflector (make a note of how things are put together) then you have to Dremel (or use another rotary tool) to remove the plastic to get the backlight out. (They are often molded into the frame.) Then put in the new backlight and reassemble everything. (http://www.lcdparts.net/howto/default.aspx for laptops) but for an overview: http://www.inventgeek.com/Projects/BacklightFix/overview.aspx

With a good spare backlight, you can test an inverter for condition (plug together and turn on the tv while the box is open). Similarly a good inverter can test the backlight. With a bad backlight, you'll usually see a very dim image if you look at the TV from an inch from the screen. Block the room light from overwhelming this image (sometimes a carefully positioned flashlight will help you see something). If the inverter or video board is bad, you will see nothing

I hope this helps.

Cindy Wells
(some videos are on You-tube for the inverter swap)

Jul 14, 2010 | RCA L26W11 26 in. HD-Ready LCD Television

1 Answer

My digistar tv their is sound but no picture...


Ur LCD inverter board is dead.This LCD inverter board help the LCD screen to have the backlight to have light to the LCD screen and get a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter board for the replacement to get ur LCD backlight back to get a picture.This board is a long board in shape.

Apr 28, 2010 | Samsung LE40R73BD 40 in. HD-Ready LCD...

1 Answer

The Model 700 has sound but no picture when different inputs are used.


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 rfurbish LCD inverter backlight board.

Mar 10, 2010 | Proview HV-177 17 in. HD-Ready LCD...

1 Answer

Sound but no picture, has worked for 4 years and went black. Cycling power displays video for a half second then goes black again.


LCD inverter backlight board is dead.Replaced this LCD inverter backlight board will get the 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.

Feb 28, 2010 | ViewSonic N2750w 27 in. HD-Ready LCD...

1 Answer

We have had this tv for less tha three years and the picture went out, we still have sound 32" lcd RCA


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

Feb 20, 2010 | RCA L32W11 32 in. HD-Ready LCD Television

2 Answers

No picture but has sound


Could be whats called the backlight inverter. Mine did the same exact thing. Ordered a new inverter and works fine now. i'm not a very techy person, but was able to remove and install myself! Got one at the link below...not cheap though..sorry.

The inverter in the link is for a Westinghouse 32" SK32H240S

http://www.lcdparts.net/InverterDetail.aspx?InverterNumber=4H.B0700.051

Jun 12, 2009 | Westinghouse LTV-32w4 32.02 in. LCD HDTV

1 Answer

No picture....just blank screen.


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 .

Oct 19, 2008 | Dell W1700 17 in. HD-Ready LCD Television

3 Answers

Dell W1700 17 in No picture, only audio


www.lcdrepair.us will repair that invertr for $49 or the whole monitor for $59 and has a large selection of DELL parts

Oct 25, 2007 | Dell W1700 17 in. HD-Ready LCD Television

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