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JVC AV21AT NO SOUND PIC OK - JVC Televison & Video

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Hi ,
Check problem is in AV mode only or both AV and RF
If both mode problem is there follow the bellow
Other wise problem May RCA cable (AV cable)

I f you are able to open TV check speaker using a Multimeter (Tv should be OFF) continuity mode,is it shows 2 ohms or below speaker is ok, problem may be audio section of your TV.

Thank you

Posted on Apr 22, 2014

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Posted on Jan 02, 2017

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Turned on, pic and sound, changed channel, pic went 80% black still have sound


Sounds like the screen voltage is less than normal. You have to adjust it. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site.

May 06, 2016 | JVC AV-32D305 32" TV

1 Answer

I have a jvc tv , old, model no av-48wp34....turned it on hsd sound pic everything normal , changed channel, picture went 80% black , stil have sound


HI Bonnie,

If you have a good picture when it's on then it points to a dry joint on the circuit board, It is probably round the switching transformer section or the eht section but please be aware of the very high voltages stored in the capacitors and tube.

If you need any more help don't hesitate to contact me.

Regards
Barry

May 06, 2016 | JVC Televison & Video

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1 Answer

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Please ensure the signal to Tuner is ok, by connecting that input to a different TV. If it works there, this might require attention by a qualified service technician.

Jul 12, 2012 | Televison & Video

1 Answer

I have a jvc/av-65wp74 unit. The screen went blank and made a pop,pop,popping sound. we could not shut it off with the power button, which was blinking off and on. We had to unplug from the wall. we waited...


Try unplugging the Convergence amp board, which is located behind the speaker grille. If the set will power up with the Convergence amps unplugged the ICs will need replacement. I have seen many JVC in both the WP30 and WP74 pop through the speakers when the ICs short. Unplugging them takes them out of the equation and the set will power up but the pic will have severe convergence issues.

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1 Answer

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Sent item back to JVC, repaired FOC by extending guarantee

excellent service!!

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1 Answer

Tv went boom


it sounds like the display may have finally gone out, however i would recommend to check other inputs (AV1, AV2, etc) by connecting a dvd player or game console. it may just be the one input that you have your cable box or coax cable connected to, so testing the other inputs will help determine this. if you get the situation with all inputs, no video but sound works, then you will either need to have your tv repaired or replaced.

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1 Answer

No pic or sound


Read below:
http://www.jangro.com/a/2006/07/24/samsung-dlp-replace-color-wheel/

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