Question about Samsung SyncMaster 740N (Silver) 17 inch LCD Monitor

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I replace 820mf/25 with 1000mf/25 these wil work or i have to get same value ?

I replace 820mf/25 with 1000mf/25 still no display & power light blue is blinking

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You are better off using the correct value, the switch mode supply runs a very tight frequency and any alterations can defeat the purpose.

Posted on Apr 04, 2012

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I replace 820mf/25 with 1000mf/25 these wil work


You need to replace all of the capacitors on the power supply board and you also need to be sure to use the correct series of capacitors. Parts from Radio Shack will not work right, you need to use low ESR, High temp and high ripple current parts. Here is a link to more information about getting the correct parts for the repair

http://www.ccl-la.com/blog/index.php/capacitors/

Apr 04, 2012 | Samsung SyncMaster 740N 17" LCD Monitor

2 Answers

I needed to replace 2 of my 820mf 25volt capacitors in my Samsung LCD TV. Problem is that I cant find these capacitors anywhere. I did found 820uf instead of 820mf. Are they the same capacitors and would I...


uf is for micro farad.
we have the same problem.
my 820uf/25v in my monitor need to replace but i didn't know where to buy this capacitor, so i try to replace it 1000uf/25v
and the result is OK. my monitor is working again. as good as brand new.
you can replace 820uf/25v by 1000uf/25v because they have a 20%tolerance...

Apr 07, 2011 | Televison & Video

1 Answer

My notebook not starting, whenever i press power button no screen display arrive, only HDD light blow and than laptop automatically turn off. my warranty period has laps.


1. Take the battery out of the laptop & try to turn on the laptop using power adapter only. If the computer turns on, then the battery is defective & needs to be replaced.
2. Make sure the power adapter is not defective. Test the output voltage of the power adapter using a voltmeter. Compare the voltmeter reading to the nominal value written on the adapter or the laptop.
3. If you have another processor which is compatible with your laptop's model, try swapping processors & test to see if the laptop will work.
4. The motherboard could be defective & needs to be replaced.

Sep 09, 2010 | Acer Aspire 4720 Notebook

1 Answer

How can I turn down the power on the FL50 to get more flashes. Can you turn down the power on the camera E510 with hte FL50 attatched?


the user manual is here http://www.olympus.co.jp/en/support/imsg/digicamera/download/manual/accessories/man_fl50_e.pdf
Have a look at page 46 TTL Auto mode - you can adjust the variable between power setting - + or - 3 stops Page 48 gives full details on adjusting this setting
Light intensity adjustment
  • The flash light intensity can be adjusted between +3 and –3.
  • The light intensity adjustment must be set to ON in the custom setup operation (page 61). • The indicator appears in the control panel.
  1. Turn dial B to select a light intensity adjustment value in the following steps. (This selection is also possible with dial A.)
  • 0 → +0.3 → +0.7→ +1.0 ... +3.0
  • 0 → –0.3 → –0.7→ –1.0 ... –3.0
  1. The display shows the light intensity adjustment value except when the value is 0, in which case the display does not show the light control range.
  2. If the camera’s flash adjustment mode is selected, the actual flash light intensity will be the total of the light intensity adjustment value set on the FL-50 and that set on the camera. The light intensity adjustment value displayed is that of the FL-50 only.

Apr 11, 2010 | Olympus FL-50 TTL Flash

2 Answers

I replaced the shuttle and need to do the phasing adjustment. Can you tell me how?


IMPORTANT The printer must be printing the Phase pattern of “H’s” when the Phasing Value is changed, or the New Phasing Value will not be written into NVRAM. If the value is changed when not printing, the printer will return to its default phasing
value when powered off then back on.
1. Install the ribbon.
2. Load full width (136 column) paper.
3. Power on the printer and set top of form.
4. Press Stop to put the printer into NOT READY mode.
5. Press Scroll + Scroll to unlock the Enter key.
6. Press Scroll + Scroll + Return + Enter to enter the CE Tests menu. (Press all four keys at the same time.)
7. The display will show “SERVICE / PRINTER MECHANISM TESTS”, the first menu item. Press Enter to enter the
mechanism tests menu.
8. Press Scrollor Scrolluntil
“PRINTER MECHANISM TESTS / HAMMER PHASING” is on the display.
9. Press Enter. The printer begins printing all H’s, each line preceded by the phasing index number.
10. Press Return. The display will show
“SERVICE / PRINTER MECHANISM TESTS”.
11. Press Scroll or Scroll until “SERVICE / HAMMER PHASE VALUE” is on the display.
12. Press Enter. The top line of the display will show
“HAMMER PHASE VALUE” and the bottom line will show the current phasing index number.
13. Press Enter. The phasing index (followed by an asterisk) will move up to the top line of the display.
14. Press Scroll or Scroll to increase or decrease the phasing index, then press Enter to activate the value as it prints.
Continue to increase or decrease the phasing index until the pattern of H’s appears.

15. When the print pattern is acceptable, press Stop. Printing stops, and the printer automatically enters the current phase
index value into NVRAM. The display shows “NOT READY”.
16. Press Scroll + Scroll to lock the Enter key.
17. Close the printer cover. Press Start to put the printer into READY mode.
NOTE: If you changed the phasing value, power down the printer, remove the shuttle cover, and write the new phase value on
the aluminum shuttle casting.

Oct 06, 2009 | IBM 6400 Matrix Printer

2 Answers

I have a samsung 740N, and the f301 is brocken. There are three cap 820mf/25v capXon bad too. I have two questions: 1. I need change the fuse, but I don't know if it will broken. 2. I need change the caps...


desolder the caps remove them and replace them with exact parts. why do you want to change the value of the cap? you can increase the voltage value. the fuse value will be on the metal or plastic. use green stick or tweezers to remove fuse body. i hope i answered your question. reply if u need something else. bama46

be sure to rate me

Aug 10, 2009 | Computers & Internet

2 Answers

Amp lights up (display) and then fails to switch


You need to replace the power amp transistor or mosfet. Bring to electronic technician for repair.

Jul 24, 2009 | Sony STR-DE998 7.1 Channels Receiver

1 Answer

Syncmaster 740n blinking blue power light + Dell lcd situation


There are two reasons why capacitor blow up is higher voltage than it can take or higher temperature than the mark on the capacitor.When I repair psu I always change ALL capacitors,primary and secondary section.Bad capacitor in primary section is usually reason for overvoltage in secondary.Fuse is in power line of 820mF.As I remember they are paralel connected so follow +line back to the diode.There is a small green component looks like resistor betwen diode and capacitors.
Same thing is with other two monitors princip is the same.

Jul 28, 2008 | Samsung SyncMaster 740N 17" LCD Monitor

2 Answers

Display problem


You have problem with the psu.Three capacitors 820mF/25V are dead and there is a fuse 3A worn out

May 19, 2008 | Samsung SyncMaster 740N 17" LCD Monitor

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