Question about JVC HD-52G886 52" Rear Projection HDTV

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My jvs tv the sound works but no picture someone said the flyback was bad

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This is a dlp or digital light projection tv. This set uses a bulb. First check the bulb. The bulb can ussally be removed from the set from the back with a screwdriver. do not touch the bulb front. this set does not have a flyback. 90 percent of the time the bulb will shatter when bad.

Posted on May 27, 2011

  • malcolm hough
    malcolm hough May 27, 2014

    no sound is an audio problem,if you have a picture and no sound check your audio plugins or use an audio cable from either dvd player or cable HDMI box

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1 Answer

51MP392H/17 Makes Zapping sound on power up. No picture or sound. Has been reset/unplugged. When powering up makes a sound like a bug zapper for about 1/2 second. Power light stays on and I can hear the tv...


The Zapping sound you are referring to is most likely due to arcing of the flyback(high voltage transformer). It is strongly recommended that you do not turn on the tv and have a tech test the flyback and replace it. The FBT generates voltages of about 30000V and should not be handled by someone who has not worked on high voltage electronics before.

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the old ticking sound... yes.. it means your power supply shut down and continously trys to reboot ... hense the tick sound as the voltage rises and fails.

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1 Answer

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Most times when you hear this kind of sound on a TV it is because the flyback transformer is bad (from what I can remember anyway!). Its been a while since I repaired TV's, so hopefully someone can verify my info. The flyback transformer steps up the voltage very high which powers the color tubes. If that is bad, you will get the thunk sound. Also, if memory serves me well, there is a high power output chip that could be bad as well. Please, anyone who knows TV's, please verify for me. It has been years for me!

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sony has problem with bad picture tubes as well as flyback transformers .if you have shorted hori output then replace it if set shorts it out again your looking at bad flyback transformer as well as maybe leaky tube.

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1 Answer

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1 Answer

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That sounds to me like a flyback transformer went bad. I just had this issue because the ceramic coating on my flyback cracked and caused it to arc off. I got a new one delivered for 31.90 and soldered it in and viola! Perfect 32" tv once again.

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1 Answer

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