I bought an lp2407 monitor at a thrift store for ten bucks that has the dreaded one-second-to-black problem. It definitely displays properly as I can see what is being displayed when I shine a flashlight into the display, but I cannot figure out exactly if the problem is a bad inverter, a bad power supply, or a bad bulb. Is there an easy way to figure this out without a spare bulb? I can't find anywhere to buy them and none of my other monitor bulbs have the same wiring harness. It doesn't appear as though there are any bad caps or anything, but I did notice that the unit gives off a very faint electrical buzzing noise when it is plugged in. Thanks in advance!
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Re: Troubleshooting lp2407 inverter
Any pictures? Do you have a couple non-working CFLS? You can make your own test lamps:
https://www.badcaps.net/forum/showth...&highlight=cfl
You can solder the wires directly to the connectors on the bottom side of the board.
Bad caps can look normal.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Anyway - I am seeking information on how to reset this so called module so that the lamp will operate. Apparently... -
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