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Samsung SyncMaster 740N 17" LCD Monitor Questions & Answers
I have syncmaster740n display is their but no brigtness
The most common problem with LCD monitors is the backlight.
After a few years of operation the electrolytic capacitors on the power supply fail and the monitor can not be powered on or the backlight is not working.
To fix it you must open the monitor and locate the power supply. Visually inspect all capacitors if they are in good condition.
Faulty capacitors are deformed.
Replace any deformed capacitor in the area with the red circle. Replace also the capacitor on the green circle. Its a small capacitor rated at 50 or 63 or 100 volts. This capacitor is responsible for the backlight circuit. Usually this small capacitor fails but does not deform and its hard to tell if its ok or not.
9/15/2014 11:37:44 AM •
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204 views • 1 helpful votes
How to reset forgotten password
could you calibrate your problem as screens dont require a password to use them, what is the operating system you are using
12/14/2013 7:07:01 AM •
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126 views • 0 helpful votes
740N not open
A common problem with monitors is the power supply. The electrolytic capacitors need to be replaced. The power supply is located at the back side of the monitor. The faulty capacitors are easily identified due to their shape (they become deformed after some time of use). It is common practice to replace all the electrolytic capacitors on the power supply (except the one or two big ones - high voltage capacitors). The cost of this repair is very low and it does worth to try (assuming you have soldering/desoldering skills).
10/29/2013 3:21:43 PM •
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81 views • 0 helpful votes
Pdf circuit diagram
Hi there, if the lamps goes off after a few seconds then it is inverter (FET driver) if it stays a while then goes off you probably have a problem with bad CCLF.Cheers
10/6/2013 11:34:15 AM •
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75 views • 0 helpful votes
Lighting
pls replace 5402ic 2nos in power supply board and also chek 12v fuse or replace bn44_00124a powerboard
7/17/2013 12:26:58 PM •
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49 views • 0 helpful votes
Does not display
i think ur disply coming dull that problem in powerboard inverter ics 2nos can u replace that 2nos of ics and chek inverter fuse
3/22/2013 11:09:20 AM •
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75 views • 0 helpful votes
Screen is white
OK, two possible problems but first, turn off and unplug everything.Set everything up and try a different monitor (borrow one from a friend or plug into flat screen tv)If this gives same result then your graphics chip is dead. Replace graphics card.If your pc doesn't have a graphics card to replace then there's probably something else wrong on the motherboard so you'll probably need to replace this.If it does work on a borrowed monitor/tv then you monitor is faulty and needs replacing.
1/19/2013 7:38:34 AM •
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103 views • 0 helpful votes
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