Question about Samsung SyncMaster 920N 19" LCD Monitor

Open Question

Model code LS19MJAKSZ/EDC - Blown Caps and damaged U205

I have this monitor which has the usual bulging capacitors but have also discovered that U205 a small eight legged smd device has a black sooty spot on it and appears to have a small hole in it. It is marked SP8M3. I have been unable to identify a replacement for this. Can you help. Cheers.

Posted by on

5 Suggested Answers

Woopsie
  • 104 Answers

SOURCE: Black spots appeared on 17" LCD Monitor-SyncMaster740N

It looks like you're developing dead pixels on your LCD screen. Short from buying a new screen to fix this problem, there are a few methods that may work. Here is the best guide that describe a few ways of unsticking those pixels.

http://www.wikihow.com/Fix-a-Stuck-Pixel-on-an-LCD-Monitor

my personal recommendation for a software fix (try it before doing anything physical to your LCD) is UndeadPixel.

http://download.cnet.com/UndeadPixel/3000-2094_4-10671596.html


Good luck!

Posted on Jun 17, 2009

  • 732 Answers

SOURCE: I have a Samsung Syncmaster 932b LCD monitor.

savato321, Most black screen lcd monitor owners don't have the smarts to open up their monitors to do a VISUAL inspection of the "switch-mode-power-supply/inverter supply!!!! You're good. Now you will need to know some stuff about electrolytic filter capacitors! First, the "uf" or "UF" means micro-farad! It is just a rating given to express the storage capacity of the device. Next is the voltage rating. A 16v rating means that the capacitor should never be placed in a circuit where the voltage will exceed 10 to 12 volts DC. Your 820 uf cap rated at 25volts will most likely be in a 12 to 18volt dc circuit. Now for temperature rating. All caps have a maximum temp rating. Most clock radios, stereos, will use 85 degree centegrade rated caps. Printers,PCs,monitors, will use 105 degree C rated capacitors. Never replace with lower specification units! You can GO up but never DOWN. If 1000uf 25v is all you can get it's OK. If you can get 820uf 35v units and they are not too big and they will fit on the board sure you can use them. I would stick with the OEM design voltage rating. Electrolytic CAPS are polarized!! You must replace them + to + and - to -!!! If you screw -up they will blow-up!! The wire lead closest to the printed STRIPE on the cap will be the negative and the unmarked terminal will be the positive. If you visit www.ccl-la.com/badcaps.htm you will get more info on recapping your SMPS. You can also watch some DIY videos at YOUTUBE for "lcd monitor repair" that might be helpful. Also visually inspect the SMPS/inverter printed circuit board for "COLD" FROSTY looking solder joints. They should all have near mirror finish to them. Let us know the name of the BAD CAPS you remove from your unit. You may even want to document with pics with a digital camera what you find. Well, good luck guy. 12fixlouie

Posted on Dec 24, 2009

  • 1684 Answers

SOURCE: SyncMaster 214T Flicker Repair

Hello,

We have a step by step repair guide posted on our web site at: www.ccl-la.com. The guide shows how to dis-assembly the monitor and what needs to be replaced.

I hope this helps, If so please rate our solution.

Buddy
Corporate Computer
www.ccl-la.com

Posted on Dec 27, 2009

  • 1684 Answers

SOURCE: Have a samsung syncmaster 920NW flat monitor.

Hello,

We have a full dis-assembly/repair guide posted on our web site at: http://www.ccl-la.com/blog/index.php/repairing-the-samsung-940mw-lcd-tv/ The article has parts lists, dis-assembly guide with pictures. This should get you going again. If you don't want to do the repair yourself we do offer a repair service, more details about this service can be found at: http://www.ccl-la.com/blog/index.php/service-request-form/

I hope this information helps, If so please rate our solution.

Buddy
Corporate Computer
www.ccl-la.com

Posted on Mar 22, 2010

budmrtn
  • 11361 Answers

SOURCE: Which power supply caps to replace?

I would suggest to use PANASONIC FM or FC series from DIGIKEY, they have low ESR, high ripple current capability, 105c rating. You should replace then as set per suggestion above.
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Posted on May 14, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

What are bad caps


you will noticed if the capacitors at the power supply board is bad if has bulged to its casing or blown up. but sometimes even with out sign of bulged but its leak, you can determined this by using a capacitance meter.

Oct 27, 2012 | Acer 17" AL1706B LCD Monitor

1 Answer

You can hear windows post and sound. monitor will be black for about 20 minutes or a litle more and flickering then it will settle and work for hours as usual


More likely the power supply is dying due to bad caps, it will get worst and may not start anymore and causes more damages to other circuits.

If you are going to DIY and already try the monitor with another PC, and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), 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 monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor and 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
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.

Feb 01, 2011 | Hannstar I-Inc TW-191D Monitor

1 Answer

Won't turn on rightaway


I would look for bad caps with leaking/bulging tops or seals. 702 is similar to 902
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), 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 VIEWSONIC monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://en.wikipedia.org/wiki/Capacitor_plague
Learn about bad caps: Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Nov 21, 2010 | ViewSonic VA902b 19" Monitor

1 Answer

My monitor flashes on once then back to black when u hit the power button


Check the power supply caps for leaking/bulging tops first.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), 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.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

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

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Nov 10, 2010 | Samsung 225BW Monitor

1 Answer

Display appears for 1 second only then goes black ... model x20wg-naga


Did you open it up and inspect to see if you can see any caps with bulging tops, check the 5v and 12~16vdc voltages?
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), 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 SCEPTRE and other 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.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Oct 31, 2010 | Sceptre X20g-Naga III 20.1" LCD Monitor

1 Answer

Green power light flickers and there is no display Model Sceptre X9C-NagaV


Look for bad caps with elaking/bulging tops as shown here (it is similar to the X7G which is 17" model).

If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), 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 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.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Oct 15, 2010 | Sceptre X9G-NagaIV 19" LCD Monitor

1 Answer

Fails to power up until after about 10 minutes


It mau have bad DC due to bad DC filter caps. Look for leaking/bulging top caps first.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), 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 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.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Oct 02, 2010 | iiyama ProLite E481S-B 19" LCD Monitor

1 Answer

SCREEN GOES BLACK AFTER A FEW SECONDS, HAVE TO SWITCH MONITOR OFF/ON THEN LASTS ABOUT 1 SECOND. IHAVE CONNECTED OTHER MONITORS AND THEY ARE FINE


Look for bad caps with bulging tops (bad caps can look normal but have high ESR) first.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), 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 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

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Sep 21, 2010 | LG Flatron L1715S 17" LCD Monitor

1 Answer

Proview PL926Wbi


On modern capacitors 2005 or up the capacitors can go bad and not even bulge at the top. I replaced a few in my moms flap panel monitor and found out that there were more that were bad and they didn't show any signs of damage but put your finger on one of those suckers and it burns like a smoking gun.

Apr 10, 2009 | Proview PL926WBi 19" LCD Monitor

5 Answers

Can changing 3 capacitors on motherboard solve my problem?


We had a power surge and my VL2018W LCD monitor stopped working... blank screen and flashing blue light.

I carefully opened up the back and found the power board (the one the AC plug goes into). There were about 5 electrolytic capacitors that were bulging (but not ruptured). There were 3 with the values listed by the original poster (470uF @ 25V) and 2 with 1000uF @ 10V.

I scrounged a couple of 2200uF@10V caps for the last two and bought 3 470uF @ 35V caps from Radio Shack (P/N 272-1030).

Luckily, the monitor came right back up and seems to be OK. It was out of warranty, so there wasn't a big risk.

Just increasing the working voltage won't do that much for you. If any caps are bad, just replacing them with the same value is good enough, but a higher working voltage won't hurt (usually means a bigger cap).

Good luck.

Rich

May 04, 2008 | Princeton Digital VL2018W Monitor

Not finding what you are looking for?
Samsung SyncMaster 920N 19" LCD Monitor Logo

Related Topics:

329 people viewed this question

Ask a Question

Usually answered in minutes!

Top Samsung Computers & Internet Experts

kakima

Level 3 Expert

102366 Answers

phoenix chi
phoenix chi

Level 2 Expert

389 Answers

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Are you a Samsung Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...