Question about Panasonic CT-27G33 27" TV

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Continuous low whistling or thin buzzing noise

When tv is turned on there is no picture, the screen is black and there is a whistling sound that only stop when the tv is unplugged.

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The whistling sound is the horizontal oscilator and beliveme you need a tech...good luck...

Posted on Jul 25, 2006

  • hector delacruz Jul 27, 2006

    I agree but whent the power supply sound is a creeap sound not a whist sound as he say....and yes I work with that model that mainly comes with vertical problem, thats the our dayly bread....

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The high pitched sound is an indication that theres a short most likly in the Hi voltage sweep section or power supply and with out the proper training you should not even take off the back as there are no user replaceable parts inside of these sets. All the parts are soldered in and you can not look at them and see that they are bad.. its almost like when your check engine light comes on you look but what do you see without a computer to read the on board computer vto see what the problem(s) are. Take the set into or call a pro to assist you with this repair. good luck

Posted on Jul 25, 2006

  • Larry  Dillon
    Larry Dillon Jul 25, 2006

    sorry dude its not the horizontal oscilator. Its the main Power supply as its a smps . These power supplys make a loud high pitch sound if theres a short in another ccircuit. Maybe you dont know about these type of power supplys??

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