Tip & How-To about Televison & Video

32"HD widescreen lcd tv/dvd combo TDA-03211c

If you got a black screen you can take of the two panels in the back and just look at the caps-capacitors to se if there ar bad look them up on the computer to see how . thats what i did .i chang out two and it steal works $4 dollars.

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My HP vs17X monitor is around 4 years old. Screen is black. When I turn it off, then on again it lights for a few seconds then fades to black. The blue light on the power button is on (not flashing), but screen is black. Is the backlight lamp gone? I am guessing that's what it is. AND, it is something that I can replace?

It can be 12vdc power supply section with bad cap, that will be the first place to look, or it is the backight inverter circuits, worst case will be the lamp assemblies, but find out first if the caps are good or bad, please note that bad cap may look normal but can have high ESR.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Please post back what you find.

Sep 24, 2010 | HP Vs17 17" LCD Flat Panel Monitor

1 Answer


Might be the backlight is out, can you see a picture when shining a flashlight on the screen. if yes you have either a bad inverter power supply or bad screen (panel).
both are serious , also could be just a few bad capacitors on the power supply, if you want you can do a visual of the power board caps will appear swollen on top and are easy to solder in cost about $1 each

Jul 23, 2009 | Televison & Video

2 Answers

blue light on black screen

tv has backlight?

just no video ..rep main video module.

Jun 05, 2008 | Polaroid FLM-323B Television

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