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JVC TV with no picture????????

 
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kevink
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PostPosted: Wed Nov 22, 2006 4:09 pm    Post subject: JVC TV with no picture???????? Reply with quote

I have a 27" JVC TV that is about 15 years old and has never had a problem until the other day. The screen is black with a thin white line running horizontal across the screen. Sound works fine. When you turn it on, it seems to work but the picture begins to shrink from top and bottom until I am left with the line. If I push on the back panel, it seems to restore the picture, but shrinks back to the line over time (sometimes 15 minutes, sometimes 1 hour). Any suggestions on what needs fixed/replaced and a cost? Not sure if I should "put her down" and buy a new one.
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sismail
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PostPosted: Wed Nov 22, 2006 5:47 pm    Post subject: JVC TV with no picture Reply with quote

You do not need to bye another TV due such fault.All you must to do, is to call a technician( if you are not one) and ask him to resolder the frame
integrate circuit that has dry joints. Price? Some few [email protected][[/url]
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Sun Nov 26, 2006 10:08 pm    Post subject: Reply with quote

Replace the verticle ic and the capacitors around it. A model # would help.
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jjweird
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PostPosted: Tue Nov 28, 2006 5:57 am    Post subject: vertical ic blew again Reply with quote

i have a very simular problem but mines a 2002 model AV-27230
replaced the vertical ic, c424 cap.., c425 cap.. and another one close by.
plugged er in and the vertical ic blew (o you could hear it, smell it, see it)
any suggestions or help would appreciated thanks
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Wed Nov 29, 2006 1:27 am    Post subject: Re: vertical ic blew again Reply with quote

jjweird wrote:
i have a very simular problem but mines a 2002 model AV-27230
replaced the vertical ic, c424 cap.., c425 cap.. and another one close by.
plugged er in and the vertical ic blew (o you could hear it, smell it, see it)
any suggestions or help would appreciated thanks


Check D422 to see if it's shorted. Also check D421. It may check good. Change C428, also check .1 cap etc off pin 2.
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beverly



Joined: 28 Nov 2006
Posts: 7

PostPosted: Wed Nov 29, 2006 5:17 am    Post subject: Reply with quote

C428 was changed
D421 checked out good
D422 burnt out hmmmm =>>and this could cause the V. IC to blow like that? cnap crackel pop
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Wed Nov 29, 2006 5:30 am    Post subject: Reply with quote

Uhm, yes!
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beverly



Joined: 28 Nov 2006
Posts: 7

PostPosted: Wed Nov 29, 2006 6:00 am    Post subject: Reply with quote

woowy..
is part D422 = MTZJ75-T2 ZENER DIODE?
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beverly



Joined: 28 Nov 2006
Posts: 7

PostPosted: Thu Nov 30, 2006 3:19 am    Post subject: Reply with quote

thanks minnie
D422 was the problem and replaced it with a high wattage (1Watt instead of 1/2 Watt)
Now off to figure out whats with the static in the audio stream when using CABLE ... RCA audio is fine
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