Repairing Backlight PSU LG1950

A friend gave me a non-functional LG1950 monitor that would turn off after a few seconds. Cycling the power on and off brought it back briefly. So he replaced his old screen and no longer wanted this one. I decided to have a go at repairing it, it was so easy I decided to share it with you.

Category:

Howto & Style

Tags:

• repair
• lcd
• flatpanel
• monitor
• LG1950
• backlight
• psu

[twhitney11]

Thanks! Have a Viewsonic Optiquest Q20wb monitor I acquired. First time turning on takes awhile to do it, but after awhile it turns off with a flash of light and a blip like turning off an old TV from the 60's. These monitors have lots of capacitor issues, so bought a $5 kit of the same specs online and replaced them all (even tho no bulging) and no avail.

Think mine is ALSO thermal related, will check out the board like you did and see if I can fix it with a simple solder! Hope thats the key!

[assons]

Nice informative video. Thank you for sharing.

[sinisa951972]

i do have a same problem with my 25" i-inc monitor ,only thing im not seeing any problem with transistors or capacitors i do have power 12 and 5 dc i do not have any power where the light bulbs are pluged in the board

[JDario7000]

Good video...!!!

[KallumMcKeeTV1]

what dose the baclight do

[moviedout]

@007foppe a problem with heat in general, but he is talking about overheating

[007foppe]

wats a thermal problem ?

[Scarface0ner]

ok this all looks like a different language to me but i will try to do the same on my 24 inch, see how it turns out

[MrSidMan]

YES!! Great rescue! These smaller components make it an art to be able to solder. Good job!

[somethinextra]

well done that man!! i have the same problem with the power board on a lcd tv, diode is shorted,more to do yet..