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I bought a samsung DNiejr 2 yrs ago and recently it has started making a sharp whistling sound. How can i repair this myself

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The most likely problem is with the Switch Mode Power suplly (SMPS) However it cannot be confirmed as you did not mention whether the tv screen is dark or having any raster (lighted up).
Do you get the green LED ' Power on' indicator lighted up or stays red only.
If it is green your problem is either with the Horizontal/vertical output stage.

So state more about the current status of your TV

Posted on Apr 01, 2011

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Posted on Jan 02, 2017

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Samsung hln4365w - no pic. or sound. it whistles a few times when powered on


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New Samsung Tv High pitched hum


Don't know if people are still having this issue or not but figured I'd post what i went through to help anyone that has. My LN-T3253H tv as out of warranty when I finally got around to calling Samsung. They flat out lied about the commonality of this problem and I convinced them to at least pay for any parts. Problem is the labor of a technician would be around $150. So, I bought the new power supply from Partstore.com for around $70. Just go to partstore.com and enter your model number and look for the power supply on the page. It took 3 days to get the part. It was very easy to replace. All you have to do take off the back cover of the tv (think there were around 12 screws all around the outside and one where the A/V connections are and pull off. Unhook the plugs going to the power supply and the four screws holding the board and then replace with the new board. So far, this fixed the issue. Keep your old board in case it starts happening again. You can probably have the old board repaired to fix the original problem since so many TV repair shops are aware of the issue. I am trying to find out from someone which specific capacitor or other piece is causing the issue and plan on fixing it myself. If and when I do, I will also post that.

Make sure you give Samsung a ton of grief when you speak to them and see if they lie to you also. I had just bought two of the new Samsung LED TV's for my media room. They work great but I returned both because of Samsung's refusal to fix my LN-T3253H and I will never, ever buy Samsung products again.

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Way too dark screen during night scenes on sharp 32" standard screen


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most likely the convergence board.
Ordered complete convergence board, ask samsung for part number Convergence AMP PCB $108.44, from www.samsungparts.com
or could send it in to ptscorp.com for repair.

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