Question about Samsung LN-T405H LCD TV

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LN-T405H Samsung LCD TV

I have the same issue as above....When the tv is powered on is just clicks...no screen shows up at all, just a constant clicking noise. Any suggestions??? My guess is it is a power supply issue ???

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Yes you are right it is the power supply, look for bad capacitors.

Posted on Jun 14, 2009

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Posted on Jan 02, 2017

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Jan 05, 2016 | Samsung Televison & Video

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Clicking noises before TV turns on.


The clicking noise is coming from the power supply relay. Is makes this sound when the TV is usually turned on or off but has become faulty. It will only get worse over time usually until the TV will no longer turn on anymore. You need to replace the power supply in order to fix the TV.

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When I try to turn on my Samsung LN-T4042H LCD HDTV it is now constantly clicking in a continuous loop and will not immediately turn on. It started out small- a few clicks yesterday morning. Today it...


There is a problem with the power supply in your TV. The regulator switch is causing teh clicking sound you hear. In order to fix it, you will need to replace the power supply. This is done by taking off the back cover of the TV, locating the power supply which is usually a yellow board that will have many high voltage capicators on it and replacing it with a new one.

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This message means the TV is not being ventialated properly. For a Samsung TV it needs to be 10 cm away from any walls etc.

If the unit is in a recess, the same principal would apply.

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Please check the power supply board, if there is any Pup-Up electrolytic capacitors, please replace them.

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My T.V. did the same thing and it was due to bad capacitors on the power supply board. the tops of the capacitors were bulged, once replaced it worked fine. It involves sodering in new capacitors total cost $30. that includes buying the sodering tool. Keep looking around on line someone had pictures step by step how to do it.

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Go to the samsung website, and find out how to upgrade the firmware for your TV. You will probably need a portable usb memory stick to do so (if your TV is equipped with one). HDMI is an evolving technology, and firmware upgrades can resolve many of these quirky issues.

Here's a possibility from http://www.samsung.com/us/support/faqs/supportFaqList.do?group=&type=&subtype=&model_nm=LN-S4696D&dType=D&mType=UM&vType=R&prd_ia_cd=02010100&acc_ia_fl=&disp_nm=LN-S4696D
Which Samsung LCD TVs Have The HDMI 1.3 Interface? spacer.gif Of the LN-T series Samsung LCD TVs, those models whose last two digits are 61, 65, 66, 69, 71, or 81 (for example, LN-T4071F or LN-T466F) have the HDMI 1.3 interface.
Samsung LCD TVs with HDMI 1.3 interfaces also have HDMI-CEC (HDMI - Consumer Electronics Control). For information about CEC, click HERE.
For information about individual Samsung LCD TVs with HDMI 1.3 interfaces and HDMI-CEC, click HERE. When the Samsung LCD TV web page appears, select the TV model you want information about by clicking the drop down list under Product Finder on the left side of the page.
Though other series of Samsung LCD TVs (LN-R, LN-S, etc.) have HDMI connections, none have models with the HDMI 1.3 interface.

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