Question about Hyundai ImageQuest L70S 17" LCD Monitor

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I have a Hyundai Image Quest L70S, the screen goes blank

I have a Hyundai Image Quest L70S, when I press the on button the screen will display for about 1 second and then goes blank. I have rebooted the computer and the screen will flash on and then go blank. I have unplugged the monitor (for 2 hours) and still get the same results.

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  • Waynet2 Jan 22, 2009

    The backlight inverter is bad. I received two Hyundai L70s monitors in the same condition from my employer and I've disassembled one of them. Unfortunately, the inverter is built into the power supply board and I haven't been able to find a source for the board online. I'm wondering if I might be able to figure out what component(s) is/are bad. The board has a large 68uf 400V capacitor that seems to show open on my multimeter no matter how I read it. On a Sceptre 15" I have (which has a different power supply issue), the same 68uf capacitor reads an incrementing value in OHMs and a decrementing value in VOLTs (which I understand is supposed to be normal).

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Hello, mine lcd it is extinguished continually. I have tried to open it and seems us or a problem on a condenser dell' inverter. Someone you would know dirmi where to find the outline in order to understand like repairing it?

Posted on Jan 31, 2009

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Power button flickers green and no display


It can be that it is not getting the signal from the PC, or it detects short circuits so it goes into shutdown and try to restart, or failed power supply due to bad caps. Try it on another PC and also check the VGA cable first. If it still does not work and you want to DIY repair, then please read below and look at alot of pictures so you will know what to look for inside.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, 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.
http://en.wikipedia.org/wiki/Capacitor_plague

http://www.badcaps.net

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Have 10 Broken monitors with simalar problems. 1. Dell e153FPB- Video for 2 seconds than screen goes blank. 2. Dell e153FPB- After 20 mins, Display stops working. 3.Dell e1724FPB-Video for 2 Seconds than...


Pleasec look through my albums so you will know what to look for.

Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, 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.
http://en.wikipedia.org/wiki/Capacitor_plague

http://www.badcaps.net

Dell bd: http://www.lcdrepair.us

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