Question about Samsung SyncMaster 204B 20.1" LCD Monitor

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How do i tell wich version my syncmaster 204b power supply is

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If you look at the board, you will see the p/n, manufacturer name, V (version) number. What kind of problem are you having with the monitors.
http://lcdalternatives.auctivacommerce.com/Repair-Kit-Samsung-204B-Rev-00-LCD-Monitor-P1274435.aspx

http://lcdalternatives.auctivacommerce.com/Repair-Kit-Samsung-204B-Rev-01-LCD-Monitor-P1274440.aspx

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, 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
Capacitors kit: http://lcdalternatives.auctivacommerce.com/

Posted on Jul 18, 2010

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1 Answer

204b backlight getting dim


change the inverter if it does not work ,you will have to change the backlight bulbs or you change the screen

Jun 22, 2013 | Samsung SyncMaster 204B 20.1" LCD Monitor

1 Answer

ONLY BLINKING POWER BUTTON ON THE DMONITOR. NOTHING ELSE IS THERE.


Hello,

This is a common problem with the Samsung 204B units that have been in service for a few years. Parts called capacitors in the power supply start failing and causing the board to not start correctly. The blinking power button is just the power supply restarting over and over. The monitor is easily repairable, you just need to replace the 5 capacitors that have failed. Here is a link to a page that shows how to open the monitor, get to the power supply board and what to replace.

http://www.ccl-la.com/blog/index.php/samsung-204b-lcd-monitor-repair/


I hope this helps, if so please rate my solution.

BuddyMc

Sep 17, 2011 | Samsung SyncMaster 204B 20.1" LCD Monitor

1 Answer

When my Syncmaster 204B (used as Monitor #2-1600x1200 60 hz) goes to sleep I can't get it back on. Power off/on, replug etc. every now and then it comes back. What's up?


Sounds like the powersupply is faulty. If it used to work for a moment then the picture dissapeared, and then if you turned it off and back on, the picture returned for a moment.

That would indicate a power supply issue, in that case it would definitely be a bad electrolyte capacitor or two. In your case I'm not sure but its either the power board or then there is something more complex wrong on the smaller mainboard inside the lcd back cover.

Sep 21, 2010 | Samsung SyncMaster 204B 20.1" LCD Monitor

2 Answers

I am looking for the pdf file Samsung 204B fix


A full repair guide with dis-assembly and repair instructions is available at:

http://www.ccl-la.com/blog/index.php/samsung-204b-lcd-monitor-repair/

I hope this helps, if so please rate my solution.

BuddyMc

Aug 03, 2010 | Samsung SyncMaster 204B 20.1" LCD Monitor

1 Answer

SyncMaster 204B slow to light up


Check leaking/bulging caps in the power supply first.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, 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 02, 2010 | Computers & Internet

1 Answer

Can i get a copy of the power supply diagram for samsung 204B syncmaster ,i replaced the capacitors that were inflated in the power supply and in the inverter but the backlight not turn on. i want to know...


jose54tony, Schematics would only be available from Samsung. Rarely do they let them out of there tight grip!! You may need to look at the smps board and inverter board to find bad transistors that may have also died (muerto) when the electrolytic filter capacitors failed. 12fixlouie

May 20, 2010 | Samsung SyncMaster 204B 20.1" LCD Monitor

1 Answer

Backlight going bad?


Hello,

This is not the backlight its the power supply board. We have a repair guide posted on our web site at: http://www.ccl-la.com/blog/index.php/samsung-204b-lcd-monitor-repair/ The repair consists of replacing 5 capacitors on the power supply board. If you can solder then you can do this repair. If you don't want to do the repair we do offer a repair service, you can get this information here: http://www.ccl-la.com/blog/index.php/service-request-form/

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

CCL_Tech
Corporate Computer
www.ccl-la.com

Apr 28, 2010 | Samsung SyncMaster 216BW Monitor

2 Answers

My SyncMaster 204B Monitor just stopped working. It worked fine this morning before I left for work, but when I arrived home, it wouldn't power up. I've been Duel Screening for about 2 yrs with no problems...


Replace the screen with a known working one. If it shows display then it is the screen which is broken, if not, then it could be the port on which it is connected.

Feb 25, 2010 | Samsung SyncMaster 204B 20.1" LCD Monitor

1 Answer

When turning on the syncmaster 204b with the monitors power button, the screen is black for a long time, then on dim, eventually on. Is taking too long to light up completely on.


Hello,

You have a power supply that is about to die. We have a step by step repair guide posted on our web site at:
www.ccl-la.com that gives directions to dis-asemble the unit and repair the power supply. If you can solder then you should be able to do the repair yourself. If you don't want to do the repair yourself we do offer a repair service for $30 plus return shipping. Contact us through our web site if you have any questions.

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

Buddy
Corporate Computer
www.ccl-la.com
tech@ccl-la.com

Dec 05, 2009 | Samsung SyncMaster 204B 20.1" LCD Monitor

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