Introduction: How to Fix Clicking Samsung Tv (wont Turn On)
EDIT: 03/09/12 (09/03/12 for you silly ol 'murricans, teehee) So this is the first time I've checked up on the instructable in over a year, honestly you'd think it wouldn't take me this long to realise Gmail was filtering out the notification emails as spam.
Anyhow; At the time of writing here in the UK I was told that this was not covered under warranty and that I would have to pay £150 to have the board replaced. It seem in other countries samsung are somewhat more benevolent and that since the time of writing some sort of legal action has occurred regarding the subtle design flaws that have a tendency to show themselves just after your warranty expires. So should you be in some kind of mental debate over the options available to you DO NOT open up your TV first. Phone Samsung, see if your model is on this list, read up on the legal situation wherever you live.
It seems I was also borderline illiterate at the time of writing so at some point I will be re writing this in a comprehensible manner.
if your looking at this then you probably have a samsung tv thats broken. This instructable is for how to fix one of the most common faults in samsung LCD tvs. This applies to pretty wide range of models, but in short the ones with the piano black bezel are all affected (That is those with the problem are all fixable in this way). when you turn the tv on it should click once. this problem is that it clicks more than once. first twice, then 5 times then ten then 50 and so on, until eventually it takes about 10 minutes to turn on. Here is how you can fix that problem
Step 1: What You Need
to do this you need a few things
1)a soldering iron (30 watts or over)
4)some needlenose pliers
and 5) 2 screwdrivers (a big one and a smaller one)
Step 2: Lets Get Started Shall We
first things first, unplug everything, especially the power cable. once you have done that turn the tv on. i havent forgot that i just said unplug it, it just helps to drain some of the power out of those capacitors.
Next step: Wait. leave it to sit for a few minutes, there's some pretty hefty capacitors in there that'l give you a zapping you wont forget
once youve done that you need to put the tv face down on your duvet or soft thing. Its best not to put it on carpet, even if it is soft As static electricity is never good for semiconductors of any kind, be it the screen or the IC's inside
Step 3: Opening It Up
now you need to open up the casing. remove all of the screws on the back of the casing and then lift it off. Be careful when lifting it off, if anything feels like its not coming away check, its very easy to miss a screw or two.
Step 4: Identifying the Problem
now that its open you should see something similar to the picture below. if your tv is over 50 inches then it probably has little metal cases over the boards so just unscrew these and remove them.
The beige coloured board is the one we're after and samsung has handily drawn a big black line across the middle, indicating which side is live and which side is slightly less live. If you cant tell the difference the the dangerous side is the one with the DO NOT TOUCH, DANGER OF DEATH signs on it. What we want is the cluster of electrolytic capacitors in the corner (see the second picture). you can tell which ones are dead because the tops are bulging, and may be leaking small amounts of black electrolytic fluid. On mine the four dead ones were all 10v, 1000uf, 108 degree operating temperature capacitors. but other models may be different so it pays to check. Don't try to find identical capacitors online, that's just a tad silly. (replacing an already underrated part with an identically underrated part, clever huh?) I replaced them with 25v, 1000uf, 105 degree capacitors, the capacitance should be he same as the originals but the voltage should be a little higher. Once you know what they are you can go out and buy them right away and proceed to the next step. or you can do what i did which is buy them online, put the tv back together and put up with the clicking till they arrive. I got mine from Maplins online shop for about 70p each. im not sure if maplins exists in the US so I cant really help you there.
EDIT: I have since been informed that radioshack is not the place to go for caps.
Step 5: Replacing the Capacitors
by now you should have your shiny new capacitors, fresh from the internet or wherever else you bought them from. if like me you bought them of the web then put your tv back together you will need to take it apart again. just go back a couple of steps and follow those instructions.
Otherwise you can begin. first we need to remove the power board, so unplug all the cables and connectors from it (make notes if necesary) and remove all the screws carefully take it out without touching the hot side.
Now to remove the dodgy ones.
gently tug the capacitor out as you melt the solder on the other side, once its out just slot the new one in. remember that the polarity matters, the short leg goes in the side marked with a black line. If your not sure then on the solder side there is a small +, marking the positive (longer leg) lead. Solder your new cap in, trim the leads and voila!
Repeat this for all of the dead ones and put it all back together.
once its all back together and plugged in, try it out.
If it doesn't work then you have a problem. (You guys signed the disclaimer right?). Open it back u and check all of the work you did. Check the polarity of your caps, check for bad joints or solder bridges, make sure every connector is securely back in place.
however if it does work then:
HOORAY IT WORKS! celebrate by watching TV.
K, you can go now
really, you can go
that means leave.
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