JVC AV-27230 27" TV Logo

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run zhou Posted on Aug 07, 2006
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Tv on with sound but no picture

When turning on TV, there were no pictures (screen is dark) but only sound (audio ok) coming out. What kind of vedio problem is this? Please help.

  • run zhou Aug 07, 2006

    please help.

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  • Posted on Nov 07, 2011
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My jvc tv has sound but no picture. Sometimes when I turn it off for a few minutes it has picture then it goes black

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  • Posted on Oct 11, 2012
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I light when it comes to tv repairs but I used to do this few years ago. What electronics components that usually get affected causing this to happen? At the DEFLECTION section I measured AC for 12VAC to 12Vac but at 26VAC I got 49Vac, what could be the problem? Please help may be I can manage to revive the this tv.

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  • Posted on Aug 07, 2006
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One that you cant handlel, many of the conponent of the tv can cause this problem, from the power supply to the picture tube but at this point regular people cant check anything in a tv, get a tech and pray to get a good one, beacouse the price of the repair ...good luck

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Related Questions:

0helpful
1answer

Sound but no picture

Hello!
Does sound comes out of TV speakers? Or you have "home theater" hooked up to?
In first occasion: TV turns on, stays on, display blinks once, then nothing?
Inverter is at fault. Second occasion: TV turns on, stays on, display glows dark, sound OK, no picture: T-con board at fault. Third occasion: TV turns on, shuts off, sound is coming through "home theater"-OK. Power supply or inverter, or T-con are at fault. TV need major diagnostics and repair in every case. Let me know if you can handle that. Will guide you through the process.
Thanks,
Alex.
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1answer

Dark picture

Hmm my dad's old t.v. just cut out on him it took awile to turn on this my be the end of ur tv so this might be a power problem but older t.v. loose there colour on the screen my uncle had a like 10-15 year old t.v the screen was like green when it was light but when u turned of the light or closed the blind's it's picture was ok so try that.
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Turns on But No Picture and No Sound

sounds like it could be a cabling issue, try replacing the cabling (if you have another tv, you can borrow the cabling before purchasing new set of cabling)
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No picture when TV is turned on, sound is OK

try to look at its circuit board and look for cold solder or loose solders usually solders with crack,they might be the problem,i dont think its the flyback coz you have audio.try also look at its picture tube at the back tru the crt if the filament is ok or it may also have loose connections
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T.V. went off during thunder strom- now nothing(no audio/vedio only clicking.

IN WICH STATE ARE YOU? IF YOU ARE IN MD-DC-VA WE CAN GO THERE AND TRY TO FIX IT


[email protected]
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How to change from tv to dvd mode

the difference between tv and av, is that av has no showers on the screen. if you change to av you will notice a blue screen, connect your yellow on vedio output and white/ red on audio out of tv
note- before connecting to a vedio touch a tip of your vedio cable some lines will show on your screen, if touch your audio tip harming noise will sound on your tv. if this two happens then you know that your cables are okey. hold your channel button on your tv, channel will start runing after all rf channels finish, tv will go to av.
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SANYO TV MODEL CM20SP8S CHASSIS AC3-A20

try to fine tune your tv using the remote control, or, if you had knowleged in electronics adjust the sound IF transformer using a wood stick or plastic don't use a metal in adjusting the IF
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Picture goes dark

1 your problem is in video section 2 if it is ok then check power supply for any components defective.
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My picture went dark but the audio is ok on Philips model 51pw9303

your tv needs to be taken to tech i is having problem in the video and related circuit.or power supply.good luck
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