Question about Sanyo DS25390 TV

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Sanyo tv ds25390 buzzing sound

The tv is only 5yrs old or less the buzzing noise continues even when you try to turn down the volume

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  • Anonymous Oct 26, 2008

    Tv always

  • Anonymous Oct 29, 2008

    i opened up the back of the tv and took a look at the circuit board, its a 12v coil on the board that is making the buzzing. I am nto sure if it is replacable or not but i am going to keep looking.

  • mcdohmeweb Dec 30, 2008

    Sanyo 27" 5-7 years old... buzzing horribly no matter what volume the set is at... funny thing is it started immediately after AT&T Uverse pushed their signal to my box... is this possible? Or just a horrible coincidence?

  • diy-er Jan 13, 2009



    Similar buzzing on a 1990, 27" Mitubishi' Model 2720R. Buzzing louder when bright colors or text on screen. Any suggested solutions?

  • chandragrisw Jan 31, 2009

    buzzing noise

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I had the same problem with the same model.
The solution was to replace a capacitor, C622, which is located near
a small blue rectangular plastic component.
This component is a relay that is controlled by C622. I paid $2.39 for
the part, $8.99 for S&H for a total of $11.38. This fixed my problem!

Posted on Mar 11, 2009

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TV is making a loud buzzing noise while volume control does not effect the buzzing sound.

Posted on Oct 19, 2008

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I have found with many televisions that a buzzing noise that changes with the brightness of the screen is usually caused by dust on one or more of the toroidal transformers. Take compressed air and blow it through the air vents at the back of your television or to do a better job you can open it and then blow it out.I hope it helps

Posted on May 03, 2009

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The blue part which is buzzing is a relay made by OEG, part number SDT-SH-112DM. It is controlled by the capacitor at C622. I have replaced the capacitor with one of a slightly higher rating as recommended but still have the buzz. Unfortunately the relay is an obsolete part and is very hard to find, at least at reasonable cost. I've read that these coils rarely fail but it looks like modification of a similar relay may be the answer.

Posted on Dec 03, 2013

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Copper wire coil under white plastic cover was the source of my set's buzzing. One application of nail polish to the loose windings of this coil three months ago solved problem AND led to clearer picture.

Posted on Mar 21, 2009

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C622 is the real problem. It is a 470 uf capacitor filtering the power to the blue relay. Radio Shack sells it for $1.29 part number 272-1030. make sure you observe polarity when you replace it. In other words, the side marked minus goes on the negative side. Check the markings on the old capacitor and replace it the same way with new one. The new capacitor has a higher voltage rating which is even better.

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What are you using as a source? If its a cable/satallite box, double check that first. If its a video input or a scart input, swap out the cables. If it still there you could have an input problem or a filter capacitor going bad. Does the hum get louder with sound? If it does it is an input source and or cables. Good luck Ps please dont forget to rate this thread.

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It Could Be A Coil in the set,Or the Yoke on the Back of the Tube,It would not be advisable to tell you to fix it

Nov 18, 2006 | Sanyo DS25390 TV

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