Anonymous Posted on Apr 14, 2009

Daytek lcd monitor model LM190

When plugged into computer and plugged into wall power outlet i can turn on but the screen stays dark. i can see the windows desktop on the lcd if i use a flashlight to look at the screen. help please and thanks to all.

3 more comments
Anonymous Apr 25, 2009

took item apart but i dont see any cracked or bulged caps or nothing that looks burned. i plugged lcd into another working monitor and the lights powered up so i know they work. what parts could be the problem?
Anonymous Apr 27, 2009

im lost.... everything looks good. no popped caps or burnt areas on both boards? any thing else or is this the death of the lcd as i see it? thanks.
Anonymous May 14, 2009

no pic attached? maybe send me one direct [email protected]
Anonymous May 14, 2009

nothing like that at all. could it be the two large yellow blocks (transformers not sure of the proper jargon?) on the inverter that are the problem?
Anonymous May 28, 2009

took item to tech and inverter is the problem. anyone know where to find a replacement inverter?

1 Answer

Anonymous

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Posted on Apr 15, 2009

Anonymous

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Starmaxpc, Yeah, at least part of your switch-mode-power-supply is working! That's a good sign. Go visit these sites and see if you could do same. http://forums.pcper.com/showthread.php?t=452974 and pkrobot.freehostia.com/LCDRepair5.htm also try http://www.net/blog-entry/specialed/2008/12/31/how-to-fix-your-broken-lcd-monitor then get back to me if you intend to repair this DAYTEK LM190. Also there is a ton of other stuff that relates to failed power supplys in LCD monitors. Even YOUTUBE has a whole ton of stuff! Even disassembly videos of lcd monitors!
Bye for now. I'm louie12fix on fixya, or lmistyrel@ aol.com

1 more comment
Anonymous Apr 25, 2009

starmaxpc, louie12fix here. You have probably done more than most consumers would have done to try and find the source of your monitor problem! Have you tried to contact the Daytek people yet, to see if they have a swapout program? You send them your's+$40-$90 and they ship a refurbished same model back to you with new cold cathode fluorescent tubes+SMPS&INVERTER back to you. Also did you check the bottom(foil side/solder side) of the power supply and inverter board for cold solder joints/thermal fractures of component leads from top side mounted parts? You may need a good magnifing glass to help find them. Louie12fix
Anonymous May 14, 2009

starmax, look for solder joints that look like this. See attached pic.

louie12fix let me know what you find. Bye for now
Anonymous May 14, 2009

starmaxpc, I'll try to attach to this note a pic of cracked joint.

louie

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