Question about LG 22" FLATRON LCD Monitor
I have a W2234s and the link to the service manual is ...
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
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. :-
Posted on Aug 04, 2010
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Posted on Jan 02, 2017
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