Question about Computers & Internet
Hi. I have an LG W2216VP monitor (just over 3 years old) which powers up & displays for a few seconds then blacks out (power still on). The caps all 'look' ok. Should I suspect the CCFL backlight or transformer? Is it worth repairing? Many thanks for any suggestions.
After three years of service, your monitor is beginning to show its age. You have to weigh the cost of replacement parts and the amount of labor required to get another couple of years of service at best
Posted on Apr 29, 2013
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Posted on Jan 02, 2017
The problem with the monitor is the power inverter board. I took my monitor apart and tested all the power outputs. The ones going to the main board where ok but the ones going to the backlight where different. I changed the three capacitors on the power board that where located between the two heat sinks I think it was the 1000uf and the two 470uf. They looked ok but when i tested them they where off. Next on the opposite side of the board with all the little componites there are a few dry joins that you have to resolder. If you cant find then you can just resolder the whole back board it should only take 30min. If you have no idea what i am talking about i would not sugest taking the monitor apart.
Posted on Jul 28, 2009
Bad caps in the power supply, common problems. See examples here: http://s807.photobucket.com/albums/yy352/budm/Viewsonic%20V912B/
Posted on Jan 07, 2010
teo6925, "Switch-mode-power-supply" is in partial shutdown mode. Can you see any electrolytic filter capacitors that have a slight "swelling" to their tops? They should be flat!! You may also need to inspect all the soldered component connections very closely for cold, thermally intermittant, "frosty" looking solder joint connections. May need large magnifying glass or 10x to 20x inspection microscope to locate these thermal/vibration "fractures" and then resolder them! If you have a capacitor problem, then you will need to carefully remove and replace with new ones. If you are novice at soldering I suggest that you document your work with digital camera or video tape so you can get everything back together with no "leftover" pieces! Teo, all you need to do to find out how BAD the problem of poorly manufactured capacitors is would be to search WEB for BAD CAPACITORS!!! Look for pic's of ELITE capacitors or CAPXON brand. You will be stunned beyond belief!!! Reading is free!! READ, READ, READ. Let us know what you find and do additional comment here on FIXYA. 12fixlouie
Posted on Jan 09, 2010
The problem is in the inverter board, the most common problem is bad capacitors, inverter transformers, or back light issues. The power supply and inverter share the same board, attempts can be made to repair or replace the board, if a professional gets involved you are further ahead in buying new.
Posted on Apr 21, 2011
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