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JVC AV-48WP74 48" Rear Projection HDTV-Ready Television - Page 9 Questions & Answers
Convergence issue?
This still could be the convergence . This will should be repaired by a tech if you do not know how to repair . Around $200 - $300 if you could get it to him or more if he has to make a service call . Call around for the best price as alot of shops vary in there charges. On this problem if it is the convergence make sure they will use the original IC's and not the cheap replacements as they do not hold up as long . Good luck
No audio
What type of sources might you be using, and do you use the RF input for anything?...accordianman
Jvc rear projection problem
the problem you are having is the convergance amplifiers have failed there may be some resistors and fuses blown also.
now, this can be caused by coolant leaking from the guns shorting out the board.you may investigate this yourself by unplugging the set open the back and check for fluid leaks around and under the CRTs and on the main board. if it is present don't touch this fluid (eytholene glycol sorta the same stuff you use in your car coolant). if it is there then yes you are looking at a high cost of repair, but if not your looking around $350.00 or so.
Like a 3D Movie
your convergence has gone out....there is possibley two ic chips that have failed. It might be some fuses but generally if they go the chips are the cause. on average a 300 dollar repair with parts and labor. first try to autoconverge the set if that dont work it will be the chips
Television
there will be 2 convergence ICs that you can access from the front. take the grill off in front(screws behind door and on side in back of tv)and take the panel off. then the board right in the front with the black heat sinks is the convergence power board. take the board out or position it comfortably and replace the 2 large ICs(stk392-110) and any burnt resistors you can see. after fininshed check alignment in the regular tv menu.
Sound diferences
Many times we've found the parameters for the DVD were selected as "compressed" and this really magnified the sense of imbalance...accordianman
Convergence-red off set
The issue with your set is convergence mis-alignment caused
by a defective IC....change both STK392-110...mounted on
large heatsinks....check nearby resistors for over-heating.....
Moderate tech skills necessary......................T.
Green bent line on 48 inch jvc
Check for a burnt resistor on the convergence circuit board. This is usually what happens when the green gets distorted as the green is not adjustable only through the service menu so its either a burnt resistor or a leaky capacitor. Resistor is far more likely. Let me know if you need any further information.
PLURED PICTURE
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/
JVC AV-48WP74 48 in
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/
Convergence
It will be them STK's again, there are a lot of cheaper ones on the market that dont last.
Looks like you need to replace the stk's and any blown pico's
Double and bouncing lines
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
White lines through the picture
they might be going again have you tried auto focus
and adjusting convergence on the menu?
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Jvc av-48wp74 48 in.rear
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Convergance Board JVC AV-48WP74
it will have a large heatsink with at least two large IC with the numbers STK392-xxxx
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
My big screen...
I think your convergance ic are going...
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
or you can send in to prtcorp.com to have repaired
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