Question about Samsung SyncMaster 740N 17" LCD Monitor

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Samsung SyncMaster 740N - backlight dead

No background light, F301 is a burnt-infinite resistance.

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Go to technician, your monitor have a depective capacitor, screen need a couple hundred of volts, so if one capacitor s depective your monitor is shuting off.

Posted on Jul 30, 2009

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The samsung LCD monitor(740N) was black out, but if you look "very closely" you will notice that the monitor is working but you can't see the output. Its like there's a problem on the monitors...


The problem will either be with the backlight or the inverter for it. The only way to be sure will be to take it apart and check whether or not the inverter is putting out the correct voltage.

Mar 15, 2011 | Samsung SyncMaster 740N 17" LCD Monitor

1 Answer

Samsung's LCD monitor SyncMaster 740N; backlight failed, I replaced bulging capacitors on PSU and burnt fuse but backlight is still not coming on


There is a inverter transformer on the board that may be defective that generates the high voltage that drives the lamp, you may end up having to replace the whole inverter board to get it working again.

Jan 26, 2011 | Samsung SyncMaster 740N 17" LCD Monitor

1 Answer

Black screen with power on power indicator color blue ]


It looks like the backlight inverter of your monitor is dead. Replacing it should resolve the issue.

Aug 14, 2010 | Samsung SyncMaster 740N 17" LCD Monitor

1 Answer

LCD Samsung Syncmaster 740n 17... Fuse F301 is brocken.


You still have shorted out components on the circuit board, you will need to download tha service manul here to do an indepth troubleshooting: http://elektrotanya.com/

Mar 30, 2010 | Samsung SyncMaster 740N 17" LCD Monitor

1 Answer

Vertical colored lines on white background on SyncMaster 740N


Hey dont open the LCD in a hurry......the problem may be due 2 usage of LCD 4 long time better dont on the pc for a day........or in night time keep it under the fan.......this may give a better result........

Nov 09, 2009 | Samsung SyncMaster 740N 17" LCD Monitor

1 Answer

N0 or Very little backlight on Samsung SyncMaster740 17" Monitor


back light is going bad. if you see a pinkish hue on the" checking signal" box on screen when it comes on. Should be white.

Feb 22, 2009 | Samsung SyncMaster 740N 17" LCD Monitor

1 Answer

Samsubg 17"LCD 740N monitor flickers


It sounds like the CCFLs (backlight lamps) in the monitor are failing. You might be able to get them replaced by the manufacturer if it's still within warranty. Otherwise the fix might involve an expensive technician and replacement parts.

Jun 10, 2008 | Samsung SyncMaster 740N 17" LCD Monitor

2 Answers

Screren has power but black display


i have the same issue as well. i solved my problem by replacing capacitors (value is 820uf 10V 3x) between the part named D105 and replacing fuse near it.. (F301 you can either jumper it directly or put a resistor 1ohms 1watts..) i hope this help.....and ows it on the power circuit...

By: Tatex

Jun 02, 2008 | Samsung SyncMaster 740N 17" LCD Monitor

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