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Panasonic No sound no picture high pitched noise

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Posted on Jan 02, 2017

technician88
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SOURCE: High pitch sound

hi Buddah! heres the solution for the high pitch sound on to your Panasonic TV,,just check if there are some SHORTED RECTIFIER DIODE on the power supply section,

Posted on Oct 25, 2008

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Tv just started making a very high pitched noise, although picture and sound are fine?


Barb, noise may be from a power supply/ transformer on it's way out.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

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Hello randapaint,

This might be from the IHVT (Integrated High Voltage Transformer), or more specifically a short in the IHVT causing it to arc, producing the high pitched whine, you are hearing. Take the back off of the TV and try to detect where the sound is coming from, more then likely you will notice it coming from the section that contains a large component with a large red cable coming from it, to the top of the CRT (picture tube). Replace the IHVT (with the exact same model) if it is bad.

I hope this helps,

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http://www.electron-age-technologies-llc.com

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1 Answer

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Rarely picture tube also shows the same symptom. High pitch sound is due to through deflection area LOT power supply is loaded. Compulsary horizontal output transister short. From your statement i think Lot puncture takes place. Change LOT and horizontal output transister and check tv is now working.

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