Question about Sanyo DS31520 31" TV

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Sanyo tv making high pitch noise from loose cable connector

My tv makes a real high pitched squeal when on. If I mess with the cable connector on the back of the tv in gets better and sometimes goes away. Im guessing its a loose connection How can I fix it?

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The noise is coming from the fly-back transformer. By moving the cable connector you move the main board. Unplug the TV and remove the back. The transformer has a red wire going to a rubber cup at the top of the picture tube. Looking at the transformer you will see a dough nut shape with a metal piece going through it .. Drive some tooth picks between the dough nut and the metal core. That should reduce or stop the ringing.

Posted on Apr 21, 2008

  • BW Altman Jan 28, 2017

    Vizio M3d460sr 46 Black 1080p Tv Lcd makes a high pitched squeal when any hdmi cable is connected to like a dvd player.. As tv warms up the sound level decreases but never stops. It's been doing this for a few years. I think it's the main power board. Help please...

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Hello,

Sorry to hear about your issue, let me see if I can help.

What type of tv is this? tube or flat panel? If tube, have you recently moved it and shook it up a little?
If panel, are you using an hdmi hookup or just regular cable from a cable box?

Be sure that your hookups are on tightly and that your cables are not tangled as well especially hdmi cable. Let me know if any of this is helpful in solving your issue or if I can be of more assistance. Once you respond I can help more, just need more information..

Thanks,
d

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