Question about SAMTRON 55V 15" CRT Monitor

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I have a monitor samsung and no power on it I check the fuse its ok and i found a power on power circuits what i can do

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Monitor is in dead condition
monitor detail
samtron 56v
type s/pro (+200mG)

Posted on Apr 09, 2011

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Go to authorized personnel...don't try to do it by urself..
it contains more than 25000volt at EHT & power supply is most complicated circuit of monitor, so don't try it.

Posted on Sep 07, 2010

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No power


Check the service manual and it will give the detailed drawing and info. relevant to your subject
http://www.eserviceinfo.com/download.php?fileid=21596

By the way, the fuse has a rating written on fuse even on the bottom of its circuit board in printed form. Always replace the fuse with the same capacity/rating for safety purpose.

best of luck!

Mar 07, 2012 | Samsung 793S 17" CRT Monitor

1 Answer

I have x2Gen 19" LCD Monitor. I hooked up the


More likely to be the fuse for the backlight inverter circuits rated at 3.5 or 4Amps. It is PICO fuse.
The transistors that drive the inverter transformers may have been damaged, should check them out before installin a new fuse. In the mean time you can use 1 to 2 Ohms 1/2 Metal Oxide (MOX) resistor in place of the fuse, if the resistor overheatand open up then you have shorts circuits.

Basic LCD monitor and LCD TV troubleshooting guide:

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV, Monitors, Caps : http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Nov 19, 2010 | X2Gen MG19MY 19" LCD Monitor

1 Answer

My samsung SyncMaster 750Ms Monitor not Working now.When I power on yesterday my monitor ,soodnly come a sound as "shuts" and power off monitor.after that I could not power on it. I have...


if u get H-transistor faulty replace it with C5804 or J6812,
also check regulaotr in 50 volt supply IRF630 mounted on heat sink, if it is ok.then u r monitor would b ok just by replacing H-Transistor..if problem persist mail me at braham_2@yahoo.com

Sep 06, 2010 | Samsung SyncMaster 753S 17" CRT Monitor

1 Answer

Monitor switches on ok, but; after a short period; switches off.


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

Jun 17, 2010 | Samsung SyncMaster 913N 19" LCD Monitor

1 Answer

Monitor keeps turning off but power says it's still on


You are OK with the power cord, more likely to be failure in the power supply/Inverter board, look for bad fuse and shorterd transistors, see Dell pictures here: http://s807.photobucket.com/home/budm/allalbums
Transistors should be checked out off circuits.

Mar 16, 2010 | Dell E173FP 17" LCD Flat Panel Monitor

1 Answer

Samsung Syncmaster 941BW No power


My Samsung 941BW would not display, only a flashing blue power button; no-onscreen menu, nothing. The internal power supply had 9 CapXon brand capacitors. Two (C109 & C110) were bulging. I replaced all except the huge 100uF 450V Cap and Presto-Magico....the monitor works fine now. If you are comfortable replacing circuit card components, go for it! Thanks for the tip, budmrtn!

Aug 27, 2009 | Samsung 941BW LCD Monitor

2 Answers

Samsung lcd monitor 153V has no display power indicator (green) is ok found 1 ic AE3U1T burnt. is this ic available or has the psu and backlight panel pcb to be changed.. dtgandhi@gmail.com


Samsung 153V LCD Monitor Power Supply Repair Tips


Troubleshooting Samsung 153V LCD power supply is just like troubleshooting those CRT type. This monitor came in with no power symptom. If you are first time repairing this type of power supply, I recommend you to first remove the switch mode power transformer. Then test every single component in the primary section, before you continue to check the secondary section.


You have to be good in testing basic electronic components in order to detect the fault. You can always browse through my website just in case you do not know how to test basic electronic components. If you do not know the right way to check, you might miss out a bad component and this will lead you not able to solve the problem. After carefully checking all the components in the power supply section, I found the filter capacitor do not have any reading using digital capacitance meter (open) , the two round type fuse also open circuit, 1N4744 15 Volt zener diode short circuit and lastly the power IC TOP247F blown!.


Testing the SMPS (switch mode power supply) primary winding with a **** smith fly-back tester, shows green bar which indicates good winding. What we left here were the secondary diode and filter capacitor. Upon checking them with analog meter and ESR meter, found all of them to be good condition. Other area like main board and inverter board also looks okay (Power failure rarely affect these two circuit). Now we have confirmed that only five components found to be faulty.


One by one the components were replaced (except one fuse) and just before you switch on the power supply, make sure you connect a 100 watt light bulb across the live ac line. Once it is done you can then proceed to switch on the LCD monitor to look at the brightness of the bulb.

If it very bright, this suggests that there are still short circuit somewhere in the power section. If it dim or totally goes off, you can now place your red probe to the secondary side to check if any dc present at their respective line. If there are DC voltages present at the output, you can switch off the power, discharge the filter capacitor (for safety purposes), remove the light bulb and connect back the new fuse to its original location.


You are now hundred percent sure that the LCD power supply won

Mar 23, 2009 | Samsung SyncMaster 153V 15" Flat Panel LCD...

2 Answers

BenQ FP72G+ 17" LCD Monitor NO DISPLAY


The way the circuit works is in a mirror format. There are 2 identical circuits that go to each end of the board.

Be sure to check that fuse for continuity, not just for a second like you normally would, but hold it for a good 10 seconds.
Also don't forget while you are in there it's best to repolace it anyway with an actual fuse. A 3A slow blow ceramic is good for this.
Check the 4 transformers as well, if you notice the top circuit is the faulty one, then check the transformers at the top. The transistors are quite powerful, and normally need something to trigger them into failing. Do the same for the bottom circuit.

This monitor came in 2 formats. One with 4 transformers and 4 CCFL tubes, one with 2 transformers that lead to 2 CCFL connectors powering 2 tubes each (3 wires per CCFL)

When you order the 2SC5707's get extras just to be on the safe side. If it goes again, then turn the monitor off immediatly and check them. It should only be 1 failed again, so just see which of the 2 transformers it was primarily attached to and replace it, or both.

Apr 22, 2008 | BenQ FP72G+ 17" LCD Monitor

1 Answer

No power to monitor


if no power of monitor. firstly Check Power Code .Power Code Is Ok Then Chek Monitor Circuit . power section . firestly Check Fuse On Pcb And Check Power Section Component Mosfet And Diode,

Dec 28, 2007 | Acer AL1715 (Black, Silver) 17" LCD...

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