Question about JVC AV-48WP74 48" Rear Projection HDTV-Ready Television

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Convergence i need help to replace the ic's could someone please give me step by step instructions i also need instructions on how to setup the convergence and formatting. this is an awesome site so glad i joined it thanx

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  • sempron Nov 07, 2007

    very very helpful thanks

  • dillio92 Nov 18, 2007

    when the tv turns on the screen shows double in red, what do i do?



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Remove the front grill. There are 2 screws on each corner accesable from the rear and 2 screws inside the front door. Push down on the grill and it will unsnap. Remove the pressboard coverplate . You should see the convergence board, it is about 12" long with a big aluminum heat sink. The board can be removed by pressing on the tabs that hold it down. Be sure to mark and unplug the molex connectors from the board. One of the connectors has to be unplugged from the chassis because it is fixed to the board. Once removed you can easily get to the IC`s mounted to the heat sink. Check for any burned resistors near the IC`s.( 2.2 ohm likes to burn) The convergence can be done through the customer menu using the remote. There is no special formatting necessary. Use the number pad to navagate and the select key to change red & blue.

Posted on Nov 06, 2007


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2 Answers

Appears convergence is not working. when i use the video button to see the convergence lines at the top and bottom of the screen the lines are curved which is causing the color and letters to be off on the...


This model uses a single convergence IC chip----

The chip needs to be replaced and there are about a dozen light blue resistors in front of it that need to be checked also.

Considering you can buy the part on Ebay for about 12 dollars plus shipping---if you or someone you know can do it for you, you can save the set and a lot of money.

I have done hundreds of these repairs and I have had so many people here asking that I composed step by step-----start to finish instructions for this repair in this set----

The instructions tell you everything you will need to do the repair and are detailed.

I just today received a comment from someone who got the instructions tell me the repair went perfect and he now has a working TV again for a fraction of what a shop wanted to repair it.

If you want the instructions let me know, I am not allowed here to post MY email address, but you.....

If you have any questions or need advice let me know.

I am here to help people, I do this here for free.


Oct 28, 2009 | Mitsubishi WS-65511 65" Rear Projection...

1 Answer

Red shift to left with curve at bottom

Par 2 = " I do see the convergence chips..."
Par 3 = " I'm not sure where the IC's are...."
Please verify STK part # of IC's on large heatsinks.....
And then I'll give you step-by-step instructions......T.

Nov 19, 2007 | Panasonic PT-47WX53 47" Rear Projection...

2 Answers

I have a Mitsubishi ws-55711 I push the power button and the light goes on for a second and goes out. I did the diagnostic check and it shows 2 blinks then 2 blinks. Do you know if this is the fuses and if...

2,2 is the error code for short protection.

The most common reason for this is one of the 2 pico fuses that protect the convergence circuit is blown. Changing the fuses will not help! They are green in color and soldered into the middle circuit board and are F9a04 and F9a05----look like resistors but are 5 amp fuses.

99% chance if one or both are blown---you have to have someone change the STK-393-110 convergence IC that this set uses----the IC can be purchased on Ebay for under 14 dollars and the same seller sells the pico fuses 5 @ 2.95.

The best thing to do here if you or someone you know is able is to unplug the set and look for the fuses---middle board towards the back---there are 5 of them and the two closest to the back of the row are for the convergence IC----If someone checks them (like testing any other fuse) you will know--if either or both is blown--the convergence IC got them.

I have start to finish, step by step instructions and photos of the fuses etc----If you or someone you know can solder and is handy--you may be able to do the repair yourself.

If not, shops usually charge 300-400 for this kind of repair in this set.


Regards, SD TECH

Oct 26, 2009 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Panasonic cinema vision 1080 hd projection tv shut off and red

thats the error code for the convergence ICs. Replace both STK392-110 Convergence Ics and the 2.2 ohm resistors. You can get the Panasonic rear projection Convergence repair kit #1 at the following link which contains the two ICs and all six resistors plus step by step instructions with pictures so you can do the repair yourself.

Feb 14, 2009 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Convergence ics

Heres the link and yes they do provide the step by step instructions. You need to replace both ICs part number STK392-120 heres the link

Apr 29, 2008 | Televison & Video

1 Answer

Additional info on Toshiba TP43H60 convergence

I am not sure what your needing help with , however its posted under convergence . Your set if having difficulty with aligning the colors will need to have both Convergence ICs replaced. This is an easy repair you need two STK392-110 Convergenve ICs. You can get them at the following link just click on the section titled Convergence IC and you will see your ICs listed there. They also include step by step instructions with pictures on how to remove the old and replace the new ICs as well as set you up with a free online chat session for support while your doing the repair. Heres the link.
If you need any additional info please let me know.

Mar 31, 2008 | Toshiba TP43H60 43" Television

1 Answer

Philips 60PP9202/17F.....The convergence is out of whack... was able to partially line up the red....can only move from left to right with compatiable remote...can't move up or down..Don't have the manual...

You need to replace the convergence ICs they are located on the large aluminum heat sink on the circuit board on the left. Either STK392-110 or STK392-120 are used in that chassis. And you can order them at this link and they provide free step by step instructions with pictures so you can do the repair yourself in about an hour. Heres the link. Just look for your stk numbers under the convergence IC section you will need to replace both of The ICs. If you need to know what they look like heres a pic.

Mar 30, 2008 | Televison & Video

1 Answer

Convergence Issues

I dont have the step by step instructions. The site that sells the Replacement Convergence ICs have the step by step instructions that they include with the new ICs. Here is the link I am one of their support techs.

Mar 29, 2008 | Televison & Video

1 Answer

JCV HD Convergence Problem.

Replace both convergence IC's......Please confirm Model #
off back of TV and I will help you step-by-step....Requires
above-average soldering skill......................T.

Nov 18, 2007 | JVC AV-48WP74 48" Rear Projection...

1 Answer


Replace convergence IC's & check fuse devices....
Normally done by a skilled Sony tech.....
If you need step-by-step instructions, try to find a local tech
who will work with you....please comment....T.

Nov 04, 2007 | Sony KP-46WT500 46" Rear Projection...

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