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Samsung LCD monitor displays for 1 sec and goes blank


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8 replies to this topic

#1 tiffa

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Posted 26 March 2009 - 04:14 AM

I am having a problem with my Samsung SyncMaster 732N model LCD display monitor when i turn it on it only displays for about 1 second and then goes blank but the power will be still on. Am suspecting maybe their is a power short which is causing this problem bcoz it seems to be hardware related and not software related. Will be most grateful for a solution from any of you guys.

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#2 the_patriot11

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Posted 26 March 2009 - 04:33 AM

this a new monitor or one youve been using for awhile that it just started happening to? and did you just do any hardware upgrades to your computer like say video card?

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#3 Platypus

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Posted 26 March 2009 - 04:38 AM

It sounds to me like what your describing is the screen goes black ("blank" could also for example be gray), and the power indicator still shows powered up, so the monitor hasn't gone into standby mode?

If this describes your symptom, then the monitor quite likely has bad electrolytic capacitors in its power supply. I've had two monitors with bad capacitors through the workshop this week, one in warranty, one out of warranty. In this case, it's probably not a difficult repair technically, although Samsung have a habit of using quite small low profile capacitors on their boards, and suitable substitutes may be awkward to find. In warranty, the complete circuit board would be replaced, but that would usually make the repair more costly out of warranty.

The same symptom can also be caused by other things, such as a faulty backlight in the LCD panel, but capacitors are always what I look at first.

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#4 slappersonly

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Posted 27 March 2009 - 01:53 PM

i have the same problem with my Samsung SyncMaster 931B and i think Platypus is right.

#5 Craig Allen

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Posted 07 May 2009 - 10:27 AM

Anyone have instructions about replacing a capacitor? I'm having this problem with a Samsung monitor, but have no soldering experience or done anything with opening up a monitor.

#6 iisjman07

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Posted 07 May 2009 - 10:47 AM

First time you plugged it in did you hear a quick bang? Also, this tutorial here is very useful:
http://www.youtube.com/watch?v=YCSNWi3UHf4&feature=related


#7 garmanma

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Posted 07 May 2009 - 11:18 AM

Anyone have instructions about replacing a capacitor? I'm having this problem with a Samsung monitor, but have no soldering experience or done anything with opening up a monitor.


I would strongly suggest that you do not attempt it, based on no soldering experience alone
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#8 slappersonly

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Posted 22 July 2009 - 04:30 PM

I have the same problem with my Samsung Syncmaster 931B and I've tried to get into the monitor but there seems to be a lock in it or something. On the back it reads "Caution: To prevent electrical shock, do not remove cover. No user-serviceable parts inside. Refer servicing to qualified service personnel."
Seems to me like they don't want people trying to take from their service charges. If anyone knows if there is a way to get into the monitor so I search for any problems (most likely replace bad capacitors), please post. Here is some pictures I took of the back of the monitor:
The back of the monitor
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A cable lock (I think?)
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Possible locks? The circular "O"s inside are rubber.
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#9 NCreature

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Posted 18 April 2010 - 02:45 PM

Hi, I know this is an old post but someone might be having the same problem and it would be nice for someone to help...here it goes.

If it's a capacitor problem here it's an easy temporary fix to get the monitor going...

With a hair dryer, blow some hot hair while the monitor is on and blinking thru the ventilation slots until the monitor comes back to life...it will remain on until turned off again.




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