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Samung 732N switches on then after a few seconds picture disapears but powr remains on

Monitor comes on for a second then picture disapears

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There's an internal hardware problem in your monitor - cold soldered / defective electronic part/s. I suggest to bring the unit to an authorized service center for proper diagnosis & fix the problem. best regards

Posted on May 21, 2009

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Posted on Jan 02, 2017

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The picture board on your monitor is bad, since it goes off after few seconds and the power led or button is on, it means the picture board of your monitor has developed fault.

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My syncmaster 732N powers up okay, goes black in 3 sec


Look for caps with leaking/bulging top or have high ESR (Equivalent Series Resistance, need cap meter with ESR testing).
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, 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.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

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you need your power supply repaired. buzzing sound is a bad disc capacitor. blank picture can be bad mofsetts, invertor and bad capacitors.

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Video cards that can handle two monitors at the same time have cables with two plugs on the monitor end.

If your video cable has two plugs on the monitor end, try the other plug.


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1 Answer

The picture disapears, though the monitors stays on - every few seconds


Check the cable connections on the back of the monitor and the PC it sounds like the connection isn't made properly make sure they are tight.

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