20 Most Recent JVC AV-56WP74 56" Rear Projection HDTV-Ready Television - Page 7 Questions & Answers

This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

If convergence is skewed and will not adjust in the customer menu:

One or both of the STK-392-110 CONVERGENCE IC chips most of these sets use is bad.

Most of these sets have the convergence board all the way at the front of the set--you can gain access by removing front under the screen--that is held in by 2 screws on either side in the back and two tiny ones where the front control door is located.

Behind it there is a inspection plate--if you remove it you will see the board right behind it with 2 metal heat sinks with fins. The chips are on the other side of the heat sinks.

This if you know how to solder etc is not a very hard set to do this repair on--Total parts cost if you buy them on Ebay (I can tell you the best seller there) is under 30 dollars.

If you think you can do the repair I can tell you what you will need and how to remove that board---the board is very easy to get out of the set--with it out you replace the chips and check for any damaged resistors--usually just both chips need to be replaced.

This type of repair usually takes me about a hour---I have done hundreds of them.

If you can not do the repair--most shops are going to get 300 or more for this repair.

Let me know if you have questions and I will help you.

If this information has helped you, rate this solution as I do this here for FREE.

SD TECH

Which input are you using ?
Is red missing when you bring up the on screen displays or menu?
I would try a different set of cables, especially if you're using the component input. If you are using the component input and a new set of cables doesn't help, then try a second component input to see if it's the input jacks that have broken loose internally.

Due to failure of convergence out section in rear projection TV, it gives double image on screen.
Replace convergence out ICs on main circuit board of TV to fix this problem.
Let me know if you want to fix TV by yourself and you have electronics repair tools and knowledge to follow instructions., also confirm TV model and brand to provide you more technical info.
Thanks.

Problemed solved,,,read on different thread to reach through the access panel and dust of projection lens in the bottom center of TV,,picture looks brand new!

OK SO ITS NOT LETTING USE THAT OPTION ON THE MENU,HERE IS A LINK THAT WILL SHOW YOU HOW TO RESET IT IF YOU HAVE THE REMOTE HOPE THIS HELPS

http://www.fixyourdlp.com/2007/04/06/how-do-i-reset-my-lamp-timer-counter-after-replacing-my-lamp/?click=48428

One or both of the STK-392-110 CONVERGENCE IC chips most of these sets use is bad.

Most of these sets have the convergence board all the way at the front of the set--can gain access by removing front under the screen--that is held in by 2 screws on either side in the back and two tiny ones where the front control door is located.

Behind it there is a inspection plate--if you remove it you will see the board right behind it with 2 metal heat sinks with fins. The chips are on the other side of the heat sinks.

This if you know how to solder etc is not a very hard set to do this repair on--Total parts cost if you buy them on Ebay (I can tell you the best seller there) is under 30 dollars.

If you think you can do the repair I can tell you what you will need and how to remove that board---the board is very easy to get out of the set--with it out you replace the chips and check for any damaged resistors--usually just both chips need to be replaced.

This type of repair usually takes me about a hour---I have done hundreds of them.

If you can not do the repair--most shops are going to get 300 or more for this repair.

Let me know if you have questions and I will help you.

If this information has helped you, rate this solution as I do this here for FREE.

SD TECH

Your description does not tell me very much---You have a JVC AV-56WP74 and it does not work?

If the power light up front which is usually blue in color just blinks I can tell you a easy way to know exactly what is causing this problem.

If when you turn the set on the blue power light just blinks---that is short protection--most of the time a fairly cheap fix----LET ME KNOW WHAT YOU ACTUALLY HAVE GOING ON.

I am here to help---I do this here for free.

Do not hesitate to ask me for help or advice.

Regards, SD TECH

Ur convergence it dead,U know how to solders?Buy a convergence kit,use what in that kit,ur tv should be back to normal.Try this website.Tv repair World.com for the convergence kit.

If it's not the original remote, then you will have to use the buttons on the set to go into the menu and do it that way.

Ok, this is a model first made in 2003 and if it has a convergence problem it is fairly easy to fix.

This set uses 2 of the STK-392-110 CONVERGENCE ic chips---I can tell you how to repair this if you know how to solder----pretty easy set to do this kind of repair on--I have done hundreds of them.

You can buy a pair of the chips on Ebay for less than 12 dollars. Usually just the two chips need to be replaced--sometimes there will be a discolored or bad resistor around them--it will have location number and is cheap part.

After both chips and any bad resistors are replaced and the set adjusted with the original remote--the set will not have this problem again for 5-8 years--normal lifespan on this kind of part.

If you cannot do the repair yourself--shop around your area--most shops charge 300 - 400 for this kind of repair--MAKE SURE IF YOU GET SOMEONE TO DO IT THAT THEY REPLACE both OF THE CHIPS--IF NOT YOU WILL HAVE THE SAME TROUBLE AGAIN IN A FEW MONTHS


If you have any questions or want basic instructions for this repair respond to this posting and I will help you---I AM HERE TO HELP PEOPLE.


REGARDS, SD TECH

If you need the convergence kit then you can try this.

http://www.tvrepairkits.com/ , I have not tried them yet, but they do carry OEM or better parts.

I hope this information allows you to resolve this issue.
If you need further assistance please comment to this post and I will try to help you further.
asnowman

Ok, I suspect one of the two convergence chips is shorted, this is usually the most common reason the light (blue?) just blinks.

I can tell you in a easy way how to prove this without replacing any part--

What kind of skill do you have?

This entails removing the front grill under the screen and disconnecting the Convergence board behind the inspection plate.


I am here to help--


SD TECH

Look inside again,and pull the circuit board or boards out enough to look under them.You are looking for a cold solder joint,on the leg of a heat sink.The factory does not always solder with there robots real well.Clean with contact cleaner,and resolder.I hope this was helpful,if so,please let us know.

if 3d looking it is a convergence problem--this model should use 2 of the STK-392-110 CONVERGENCE CHIPS---both and any bad resistors around them need to be replaced and the set adjusted.

Can you do this repair yourself if I tell you what is involved?

You can buy a pair of the chips for about 12 dollars plus shipping on Ebay---it does involve being able to get at them and soldering(each chip has 18 pins..)


Let me know if you think you can do it and I will tell you how to proceed--if you cannot do it I can tell you what to do to get it fixed--it is a fairly easy repair on the set you have.....

I am here to help and if you have any questions or need advice reply to this posting here and I will assist you.

REGARDS, SD TECH

RF connection is OK. Composit connection is better and component is best [red, blue, and green rca jacks.] Or simply the fact you are not far away from this TV. Or are you asking for someone to clean the lenses and mirror? These are all good answers.

There are many free translation programs online. This would probably be the fastest way to happiness.

go through the convergence. line the blue and red cross hairs.

This is a convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$300