My LCD after 2&# second display off what is the problem
SOURCE: samsung 920nw when it warms display disappears & a few
Most common cause of the failed monitors are bad caps in the power supply, if it is about two years old, I would open it up and look for bad caps first, then look for any burnt parts, post back so we can guide you further, see failed SAMSUNG monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums
SOURCE: Hi I Got a Samsung SyncMaster 920NW the display
If you are saying that it powers off in a few seconds you most probably have a bad (internal) power supply.
SOURCE: samsung gh19ws (920nw) model lcd
Common problem is in the DC filter caps in the power supply circuits, that will be the first thing to look for first, please note that bad cap can look normal but can have high ESR. http://en.wikipedia.org/wiki/Capacitor_plague
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed SAMSUNG monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
SOURCE: samsung lcd problem
This means that the capacitor(s) in your monitor are faulty. On the board where you plug your power supply onto your monitor is where you can access these capacitors. Capacitors in your monitor have the duty to hold down the power long enough for the proper display on your monitor. Bulged and burned or cracked capacitors will only hold the power for less than 5seconds. Probably you have to get a Computer Technician to open it up for you. If you can, get a flat and sharp instrument and start splitting the two covers from the bottom, working your way round to the top. You will notice finger-like clips that hold the two covers together. When you access and identify the faulty capacitor(s) take note of its polarity(-)( ) so that when replacing with the new one, you maintain the polarity. This will definately solve your problem
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