Question about Samsung LN-S4041D 40 in. LCD HDTV

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Samsung 40" lcd tv with power supply fault?

When I switch the Samsung tv on it just keeps making clicking sounds for about an hour and then eventually switches itself on!

I used to be a qualified service engineer a many years ago, before LCD was around and if someone knows the faulty parts needed and has a circuit diagram I am sure I could fix it.

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You need to replace the 10v blown capacitors with 16 volt or higher go to utube and type in samsung power supply fix and you can do this yourself for about 30 bucks

Posted on May 30, 2010

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Replace capacitors CM211 ... CM212 and CM217; Available at Maplins off the shelf. problem resolved. Good luck. Mike.

Posted on Feb 16, 2013

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1 Answer

My tv keeps clicking on and off at startup. Sometimes taking 3-4 attempts to turn the screen on. Also, it will start without picture only sound


Your #1 suspect: LCD inverter, which supplies white light to the screen.

Your #2 suspect: the switched power supply, specifically 24VDC lead that supplies power
to the LCD inverter.

Either way, enjoy your 40-in set while it lasts, since its soon to be heading for a TV repair service.

Jan 02, 2011 | Samsung LE40R73BD 40 in. HD-Ready LCD...

1 Answer

I have a samsung LE40R73BDX/XEU LCD TV which continually clicks and eventually switches on. The time it takes to function is getting longer. can you help?


the power supply board is going bad. sorry! if you google "samsung power click capacitor" you will see just what is wrong. Next time buy american, wait, there is no american made TV's

Aug 14, 2010 | Samsung LN-T4061F 40 in. LCD HDTV

1 Answer

Makes clicking sound without switching on


is this a samsung? if so call them. its a well known fault on samsung lcd tv's. 0330 7267864 they should fix it for free. just explain your tv just clicks away when you switch it on.

Jul 31, 2010 | Samsung LA40R81BDX 40 in. LCD TV

2 Answers

Samsung LCD LA40R81BX/XFA TV doesn' switchon/ keeps clicking


Nothing to do with connecting the TV to the stereo, more likely you are having power supply failing, the clicking sound is from power relay, the power supply may have unstable DC due to bad DC filter caps, bad solder joints or loose connections.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Please post back what you find.

Jul 22, 2010 | Samsung LA40R81BDX 40 in. LCD TV

2 Answers

Problem switching on and off


samsung will do a free repair i had the same fault and they fixed it fir free give them (SAMSUNG) a call.it is a known fault

Apr 29, 2010 | Samsung LE40R73BD 40 in. HD-Ready LCD...

1 Answer

Samsung lcd 40" does not switch on immediatly


Check for bulging capacitors in the main power supply...the tops of the caps will be swelled. Good Luck.

Sep 04, 2009 | Samsung LA40R81BDX 40 in. LCD TV

1 Answer

Clicks on and off several times before staying on


The power supply will sense if the set is 'drawing' too much current and switch itself off. This could be the case here. The power supply board may eventually go completely bad.

Feb 23, 2009 | Samsung LN-T4042H 40 in. LCD HDTV

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