20 Most Recent JVC AV-56WP74 56" Rear Projection HDTV-Ready Television - Page 6 Questions & Answers

This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

• Screen Looks 3D
• Colors wont align
• Video may look distorted

Problem #2 CRT Fluid has clouded over. Symtoms

• Dull looking video
• White looking video
• Halos around objects
• Red/Orange looking video

You can see some examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Ur convergence is dead.Must replaced 2 convergence ICS and some or all it resitors.The shop well cost u $300 for parts and labors.

It is worth getting an estimate. From the symptom you explained, it looks like the horizontal output transistor became defective.

It seems that your unit has some sort of PSU fault, or a problem that is shutting down the Power Supply Unit, PSU. This happens so that no further damage, and possible fire will occur.

You need to take the unit to a reputable service centre/man and ask for a firm "Quote" for the work to be done. It is that sound that gives it away, this is a typical switchmode Power Supply problem.

It could very well be the ICs if you cant adjust it back into alignment with the convergence adjustment option.

Install the AV48WP74 convergence repair kit from www.tvrepairworld.com the kit contains the parts and the Cd with detailed instructions for the repair.

Have you tryed adjusting convergence Look for it in your Menu and try to adjust Blue convergence, Is there lines above the letters on screen?
or does it look like a picture that is double?

Hi,
Question shows its JVC AV-56WP74 rear projection TV and symptom shows tv got convergence out chip failure problem.
If you know soldering parts in circuit board then replace two big black ICs STK392-110 mounted on aluminum heat sink in convergence section.
Required ICs are available in Part Store and if you fee uncomfortable working in TV, local tech will help you to get it fixed.
Hope this info will help you.
Thanks.

Hi,
Please intimate problem with JVC AV-56WP74 to assist you.
Thanks.

It's recommended to replace all the defective parts first because if you only replace the defective resistor, it might burnt again if the convergence IC is shorted internally. I would also suggest to measure the other low value resistors with multimeter.

makesure the projectors didnt burn out, mine did once

convergence ICs are STK ICs example STK392-110 they will have part number on them they are big black ICs Call Mats Electronics for Parts 1-800-628-1118

I am sorry, just tell me how many times red or blue led blink, I will be here.
Thank you

Good Day,
It sounds like you may have slightly diconnected a cable. Look for the large RED cable/wire that goes to the Blue tube and make sure that they are very secure. When doing this make sure the TV is off.

Good Luck, BIG IRISH.

convergance amps are failing and need to be replaced along with the 2 burnt resistors not a bad job they are locate on a smaal board in front behind the front panel on a large heat sink you can take the board out and work on it

Do you click the ctrl+m? this is mute. or you can look buy gold for wow and wow money

A convergence repair kit will need to be installed. your model uses the AV48WP74 - AV65WP74 convergence repair kit. You can get it at www.tvrepairworld.com the kit contains the parts and the CD with detailed instructions.

There could be two reasons for not getting any audio.
Firstly. the speakers got disconnected. That you would know better if the TV was subjected to shocks/ thuds etc. Otherwise go to
Secondly. The Audio IC/module is busted. To confirm this, please remove the back cover and take a peep inside. Can you find some bulged or burst capacitors. Capacitor is a round cylindrical thing that keeps jutting out the printed circuit board (pcb). If found then these have to be desoldered and then replaced by exactly the same specification ones. If you cant see any then maybe a professional help would be more appropriate. If the audio module was not out then there would have been some sound some where as you have tried all possible methods of getting audio.

Most likely the Convergence IC's along with bias resistors have gone bad. It's not an expensive repair but I would take care of it as soon as possible. Usually in the area of $250.00 will take care of it.

Replace the convergence IC's and check all bias resistors. If your not electronically inclined then I would have it repair by a service company.