20 Most Recent JVC AV-56WP74 56" Rear Projection HDTV-Ready Television - Page 9 Questions & Answers

If you have no audio or video and the TV is making a chirping or clicking sound the most likely cause is the convergence chips have shorted. You can get the parts and instructions on how to do the repair from www.TvRepairKits.com

You need to replace the Convergence ICs and feed resistors. You can get the convergence repair kit for your nmodel at the following link which contains the parts and detailed instructions with pictures on CD.
http://www.tvrepairworld.com/

Hi

the flyback is a high voltage step up transformer that light up the CRT tube. usually this is color black or sometimes Grey with have anode wire attach in the picture tube. the fuse are so many types of fuse,. but in this model the fuse is like crystalin glass tube with metal at both ends..

Thanks!

there is any issue with ic.check it.
Check all register diode trnsistor gives proper out put.
Also check integrated circuit working fine.

The clicking sound is the TV trying to restart itself. It generally attempts this several times before giving up. The blinking code indicates the type of error (error codes are documented in the manual for the TV). The most likely cause is a burned out bulb, but could be something else.
If it is a bulb, it is usually replaceable without a service technician, and at a cost far less than $450.
Good luck.

HI. we highly recommend a service tech for this issue. there are many things that can go wrong here if the IC isn't soldered correctly. if you are not an experienced tech, we recommend calling for service.

i recieve most of the parts for my shop from vancebaldwin. that is a personal recomendation

1. disassemble front speaker panel.

2. locate circuit board in front with the 2 large black or silver heat sinks standing up. (this is your convergence board).

3. disconnect all the wires on this small board, but make sure you take a picture first to know where they all go.

4. look for 2 black cips that says stk ***-***.

5. order replacement chips on line.

6. learn to solder before chips get to you home.

7. watch you tube videos titled "how to fix tv convergence.

8. wa, la send me some money to show me your appreciation, lol.

Look in back of TV What is the number on the (2) Big Black ICs STK392-110s or ?????? If they are you need to USE STK392-180s. 110s do not hold up.

Need to replace both convergence amps and any related resistors that may have blown open.

bad optical block call jvc

Here are some of the most common symptoms and example photos of a convergence problem

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

Solution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.

if the noise is from inside the tv in the back,the high voltage transformer that feeds the anode for the rgb tubes,28000volts probably is arcing.

Your TV most likely a convergence failure. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.

Here are some photos of convergence problems.




Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

you need to change converance chips do both STK392-120 you can also use 150

my wma wont work how do i fix this i tride evry thing.

If you do not have hand soldering skills or know how to use a multimeter, I would suggest to replace the whole assembly.
If you know how to solder you can just replace 2 ICs that are mounted on the big black heatsinks and possibly 1 or more resistors.
Click here to find the entire assembly for your TV.
Good Luck.

Hi,
Can you please post TV screen image here that shows problem and please intimate exact model and brand of TV, I assume it is JVC AV-56WP74, is it right?

Hit "add a comment" button to reply.
Thanks.

There is a short in this TV set somewhere. The TV set is trying to come on but because of the short, the power supply shuts down. No if it is not the over current shutdown, it could also be the main power supply with an over voltage shutdown protection mode. These are solid state TV sets and should only be worked on by trained techs. Good Luck