Question about LG 22" FLATRON LCD Monitor

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I have a problem with my LG Flatron W2234s monitor, that monitor went dim that i can't read from it, please help if you know how i can fix my problem, even if i need to change capacitors please direct me which ones I need to exchange as there is 8 of them.

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Hi,
I have a W2234s and the link to the service manual is ...
http://elektrotanya.com/lg_w2234s-sni-bni-axx-qp_sm.pdf/download.html.
To be honest it sound like a tube gone at the back , the easy way to find which one is to plug in another plate from another LCD, I' done this with 19 and 17 , just don't leave it connected for ever,
So select 1 of 4 the plate leads and leave it unconnect to your w2234s inverter and plug in one lead from your other plate to give 4 connection and see it it lights, your can do all 4 or in pairs. Having found the broken tube or part then replace it. If it still fails it the inverter, the manual will tell to where the 5v and 16v are using a voltmeter to check the caps if showing 15v to 20v then ok(brightness control) etc, I had to print the manual to read it. Check the 5 power transistor, three around the caps , two on the flip, all have silver heat sinks, they control the voltage in three steps from out side to the ccfls in 110v/240v to 5v and 16v to 750 volts , see where it stop flowing, it's in the circuit diagram. In the three that i have seen, the caps where ok , tubes where weaking, maded january 2008. I hope this helps.

Posted on Aug 26, 2010

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  • LG Master
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It appears you have a backlight problem. This fault is caused by either a faulty inverter board or a faulty CCFL lamp. Please click on this link and follow my instructions to determine the fault and possible fix. :-
http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

Posted on Aug 04, 2010

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Posted on Jan 02, 2017

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