Tip & How-To about Televison & Video

Repairing a TV that just clicks over and over

Many newer TVs had bad capacitors installed in them from the factory. The most common symptom of this is the never ending "click" noise. Sometimes it starts out taking a few clicks to come on, and eventually clicks forever. Other symptoms can range from a completely "dead" set to different problems like video or sound issues. When a voltage drops a little low, it can cause issues that look like something else, when in fact it can be in the power supply. These capacitors are solder in and can be found easily.

Open up the TV
Look for bad capacitors on the power supply

BULGED CAP - This is a bad cap. A good one is flat on the top

Write down the values of the caps - purchase the new caps with same or larger voltage values from an online distributor. The values will be something like 1000uF @ 16 volt, and if you search this on the internet, you will find them for very cheap and readily available. This type of capacitor is an "electrolytic" and make sure to go for the 105 degree version so it can handle a lot of heat and won't fail again.

Solder in the new caps, and you're done! When you replace them, make sure you get the line on the same side as before as they are "polarized" and won't work (might even blow out) if you put them in backwards.

- If you've never soldering practice, but a kit at radio shack or online and get some experience. Make sure you have a nice hot iron with some substantial wattage (i bought a 15 watt once and it worked horribly, go for 40w or something) and get some solder "wick" or a desoldering pump tot help you unsolder the old ones. You can also heat up the connections and just pull them out if you're in a pinch :) .. Look up Youtube videos to see how its done if you need a little help, soldering can be easy once you get the hang of it, but it can be difficult if you don't get good heat transfer.

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I have a 46" Samsung LCD, Model #LN46A630M1FXZA that clicks on/off when powering up. It has all symptoms of their known capacitor issue but turns out problem still exists after replacing main power bo


Without an EST meter you could not tell if you have bad caps anyway. So it was a shot in the dark. The caps dont have to be on the main PSU. They can be on the other parts too. Also the PSU you bought might have bad caps

Dec 02, 2013 | Samsung LN46A630 46-Inch 1080p 120Hz LCD...

2 Answers

looking for part# Price & avail on power supply , for M# L42W761


I own a L42W761 which was randomly going off and on. Sometimes it would stay on, however the power light (an amber light) would blink amber, and eventually it would shut off. From time to time it would for no reason come on and then eventually shut off. An examination of the power board did not reveal any obvious defects, i.e. bulged or leaking capacitors. The problem turned out to be a bad connection between the input power module and the wire terminal which had a pvc protective sleeve. The factory had the post of the power module incorrectly connected to the wire terminal. Instead of the post being inserted into the connector, it was inserted so that one side of the post was between the pvc sleeve and the outer part of the wire connector
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May 13, 2011 | AOC L42W761 LCD TV

1 Answer

Westinghouse LVM 37w1 Screen goes black, blue light stays on, sometimes turning the tv power off and on fixes it, sometimes just have to wait about 10 minutes and it works again. Could it be the Westinghouse 4900211780 Power Supply?


Plasma and LCD TV sets are prone to having capacitors in the power supply section fail. This is the most likely cause for the probem you describe. When capacitors fail your will commonly see one or more of the following symptoms.
  • No video, Power light is on or blinking.
  • TV is making a clicking noise.
  • TV takes a while to come on
  • Screen is very dim or flickers.

Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

Here are pictures of capacitors...Notice that the ones below look bloated. They have failed and will need to be repalced.



ecollier2012.jpg
Capacitor being replaced! Fairly easy DIY fix.

ecollier2012_0.jpg
Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

May 01, 2011 | Westinghouse LVM-37w1 37 in. HD-Ready LCD...

1 Answer

i turned the pump on and it is making a humming noise but is not working


the most common problem for the symptoms you describe is a bad start capacitor. There should be a hump on the motor. Remove the two screws that attach it and replace the capacitor inside with an exact match. If it has a start/run capacitor, it may located under the end cover of the motor.

Apr 07, 2010 | Hayward SAND FILTER, PRO SERIES

2 Answers

my samsung 40 inch lcd tv is not swiching on it just keeps making a clicking noise


HELLO, I AM ALMOST SURE THAT YOU HAVE BAD CAPACITORS ON THE POWER SUPPLY BOARD, IF YOU OPEN THE SET LOOK FOR THE SWOLLEN CAPS THAT IS A COMMON PROBLEM WITH THIS SAMSUNG LCD TVS
GOOD LUCK


CAYPIANAN@YAHOO.COM

May 10, 2009 | Sanyo DP42746 42 in. Plasma Television

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