20 Most Recent JVC AV-56WP74 56" Rear Projection HDTV-Ready Television Questions & Answers


Hi
I have a .pdf of the diagram - can you let me know your email so I can send it - it's too big to attach.
Glyn

JVC AV-56WP74... | Answered on Dec 06, 2018


change the green lamp

JVC AV-56WP74... | Answered on Jul 05, 2018


Mine came off easy because they hardly used any thermal paste at the factory (doh!), but dont be afraid to pry them off. You have to get the "glue" off anyway, just dont bend the PC board or crack an edge when you do it. Try clamping the heat sink gently in a vice and use a tiny flat screwdriver and twist under the IC. Once unglued, you can bend the ICs away from the heatsink pretty far as you de-solder the pins. I would recommend you replace with the higher power chips (150s) also. They are identical in function but rated for higher power which might get you a few more years of life.
removing-stk-392-110-chip-rzft2a41ymvcc0z5ypedp1yk-1-0.jpg

JVC AV-56WP74... | Answered on Oct 18, 2016


I can't be sure, but it may mean "warming up now, please wait".

JVC AV-56WP74... | Answered on Aug 08, 2014


it sounds like u need a new lamp with housing if that dont work than its your main board on the inside of tv. but i would try the lamp first

JVC AV-56WP74... | Answered on Sep 19, 2013


It sounds that the convergence adjustments should be re-touched. If you wish to get more details, check this site linked below. Pull up older posts there. Check the site with patience, as it has over 2350 posts now. All are related to electronic equipment repair help. If you search the site in Timeslide option, which can be selected from the drop down list at the top left of the display window, it will be easy to locate the related post. You can also do a search by type in the brand name to your device into its search box at the top right of display window.
http://electronicshelponline.blogspot.com/

JVC AV-56WP74... | Answered on Apr 26, 2013


Most likely the two stk-392-110 convergence chips are bad and need replacing, several sites sell kits for this.

JVC AV-56WP74... | Answered on Dec 22, 2012


you can try to adjust the horizontal position

JVC AV-56WP74... | Answered on Nov 08, 2012


Convergence is most likely for this model------that circuit in this set is right at front behind grill below the screen.

If you can solder it is a do it yourself type repair with parts under 30 dollars (most shops get 250 average parts and labor) and I can tell you how to get that board out and what is needed.
11_1_2012_3_22_55_pm.jpg11_1_2012_3_23_20_pm.jpg

Here is the board removed from a set.

JVC AV-56WP74... | Answered on Nov 01, 2012

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