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JVC TV problem

 
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PostPosted: Fri Nov 09, 2007 3:04 am    Post subject: JVC TV problem Reply with quote

the brightness gradually grew dim over a period of three months. all at once what should be black or gray in color is now green, the other colors are good. someone advised me to try a new or remanufactured motherboard.
AV27432
serial #08874066R
manufacture date 2003. purchased new Apr. 04.
if a remanufactured motherboard would fix this unit, someone respond back repairs and/or sell parts, at username email or please advise me where I may purchase this part.
thank you, woot
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minnie



Joined: 18 Aug 2005
Posts: 2877
Location: Hell

PostPosted: Fri Nov 09, 2007 11:58 pm    Post subject: Reply with quote

Try to degause the set.
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PostPosted: Sat Nov 10, 2007 12:39 am    Post subject: Re: JVC TV problem Reply with quote

[email protected] wrote:
the brightness gradually grew dim over a period of three months. all at once what should be black or gray in color is now green, the other colors are good. someone advised me to try a new or remanufactured motherboard.
AV27432
serial #08874066R
manufacture date 2003. purchased new Apr. 04.
if a remanufactured motherboard would fix this unit, someone respond back repairs and/or sell parts, at username email or please advise me where I may purchase this part.
thank you, woot


Try to rase g2, is the big transformer called the flyback there are 2 knobs on the back, the down one is g2, and the upper is focus,some need a srew driver to turn it up ,you could also try to resolder it's pins,also the socket on the crt could be bad, some time inside the socket gets bad corrode contacts inside the socket.
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woot
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PostPosted: Sat Nov 10, 2007 3:51 am    Post subject: JVC TV problem Reply with quote

minnie wrote:
Try to degause the set.

thanks minnie, and you too guest with the flyback adjustments(although i'm skittish of the flyback, i've been told it may give me a smack). minnie, i will try to degause first. thanks to both of you. woot
ps. i will let you know the outcome tomorrow.
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woot
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PostPosted: Sat Nov 10, 2007 7:27 pm    Post subject: jvc tv problem Reply with quote

yep! i'm the hero for the moment, in my house.
thank you both. tweeking the g2 on the back of the set makes it glow as if it were brand new.
thanks again, woot
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PostPosted: Sun Dec 16, 2007 6:26 pm    Post subject: Reply with quote

Your CRT is probably about to get worn out. Adjusting Ug2 will only work for a certain amount of time. In the end you'll have to scrap the tv.
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