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I am using Samsung 40in LCD TV. 2years old. For the past one week on switching on it makes a tick tick sound for about 30 seconds before the TV actually switches itself on. OK in all other respects

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Caps are bad on smps or ip board. replace caps or pcb

Posted on Sep 09, 2010

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The caps on the power supply that supply the inverter board are probably swollen, bubbled, or cracked! Replace as needed with proper values and make sure you use 105 degree replacements for longevity. Let me know how it turns out: Sam Farrell

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Hi my name is Roety,
I can help you with your issue ,
This is most likely a power supply issue
I usually replace the swollen capacitors I can see
A repairman would charge about $300 to replace them for you.
 
 
If I have helped you with your issue
If you have more questions you can still respond
I will reply asap
Thanks

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Samsung 46 clicks takes 45 sec for picture


Hi my name is Eric,
I hope I can help you with your issue ,
The TV not starting properly you should hear the tone noise (bleep bleep) not a ticking noise or no sound .
Great that its under warranty
These Samsung LCDs have problems with the power supply capacitors going bad, a servicer will charge between $200 and $450 to repair it replacing either the capacitors or the whole board.
here is a DIY (do it yourself) solution:
It could be just a few bad capacitors on the power supply, if you want to attempt the repair yourself you can do a visual of the power board caps will appear swollen on to.
We do not recommend do it yourself, but depending on your knowledge and technical ability you may be able to.
with the back removed you will usually see two circuit boards the upper one is the power supply, it has a few capacitors on it (cylindrical standing straight up soldered in mark on the sides with the positive/negative sides and MF and Volts values)
Samsung uses mostly 1000Mfd at 16Volts rating capacitors, they cost about $1 each (680mfd will also work fine)
usually I replace about four of them (or all the bulged on top ones) .
The power board and back unscrew with a medium philips screwdriver, if you do not know how to desolder and resolder then do not attempt this as you may damage the TV more than fix it.
Im am posting a photo of some swollen caps on a board so you know what they look like;
 
best of luck to you
Hope this helps, if it has solved your issue please click accept
But if you have more questions please respond and I will reply asap
Thanks
Eric

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I concur with Lightnbaby.... had same problem... my TV LNT4042HX/XAA took 10 min to start sometimes... the capacitors on the power supply board had bubbles on top 4 of them all 10/1000Uf. Samsung wanted to charge $220+ to have a guy come out and fix. J&J parts (samsung vendor) wanted $108 for a new board. I replaced the 4 capacitors for $4.68 and the TV works fine now!!!!!

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