20 Most Recent JVC AV-48WP30 48" Rear Projection Television - Page 4 Questions & Answers

Let me say something and also post a few photos.

If you go into the customer menu and select convergence is it skewed and will not adjust. If so you have a convergence circuit problem--not real expensive or hard to do on this model

Look at the photos I will post and tell me if they look anything like your problem.

If they do I can give you directions to fix it yourself.

Most convergence problems shops will get 300 or more to fix but the actual parts cost is under 30.

Look at these photos and let me know if they look anything like your problem.

If this has helped you rate this solution as I do this here for free.

I speak from first hand knowledge as I have repaired hundreds of sets with convergence problems.

sd tech



OR?

First of all tools,requirement to do the work on the Convergence board to do changes the 2 STK convergence ICS and some or all it resistors.U have a soldering iron,desoldering pump or soldering wicks and solders?Don't?must buy to do desoldering and soldering?Tries Amazon.com to buy solders.Tries wesites like Tvrepairworld.com to buy the convergence kit to replaced ur self,and buy the soldering iron here it have the desoldering pump attach to the sodering iron it self.For video tutoring how to take out convergence board out of the tv and replacing the 2 STK covergence ICS and some or all it resistors.Might included in the buying of the convergence kit,not,Try You Tube type in convergence problems,will have video some body doing it.

You have sustained a failure in the convergence circuit requiring replacement of both IC's and possibly a resistor or two. The chip numbers are STK392-110 and they are both the same. Price of repair from a service center will run around $350

Bill W
integrityhomeworx.com

A convergence repair kit will need to be installed. The JVC AV48WP30 convergence repair kit from www.tvrepairworld.com has the ICs resistors and the CD with repair instructions.

If your TV looks 3D, warped, or distorted it likely has a convergenge problem.
If however it just looks dull, washed out, redish, greenish, or blueish or if it looks like objects on the screen have halos the fluid in the lens has soured.
You can search google for parts or you can get the parts with repair instructions from sites such as www.TvRepairKits.com

Your Convergence IC's are shorted. Replace both at the same time.

Replace the convergence IC's and adjust the convergence.

Replace the convergence IC's STK392-110.
AND Check the resistors 1.6ohms and 2.2 ohms.. If open replace them.

Convergenge board needs replacing.

convergence board problems u will nedd replacment soon

plz do rate this post

When troubleshooting these units, there are always several variables to consider. First check to see what last occurred with the unit such as did the children play video games, did the electricity go out due to bad weather. You may see that there are many possibilities but let's focus on what occurred last to the unit. Once we determine what happened last, we may isolate the actual cause of the problem. The actual cause may be associated with projection issues, older versions (Picture tube), interference from devices located nearby, and even a radio turned on and located really close to your unit. This is normally known as electromagnetic interference to electronics and is very common with the error you have provided today. Please continue to look for anything EXTERNAL to the unit before looking at the internal components. I have been working on these a long time so feel free to follow up with me.

Take a dump on the top and rub it in with your tongue. Should do the trick.

Your TV most likely has one of two possible problems.

Problem #1: Convergence Chip 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 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.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.


TV set after fluid change



Solution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc

Hello; You have a failed convergence board. JVC does NOT give me ANY info. They won't even talk to me on the phone! On some sets, there is a digital convergence board and a power convergence board that actually drives the convergence yokes on each of the 3 CRT's. If you have both, either one is bad and probably expensive. I recommend people Don't buy JVC products due to their bad reputation. John

This tv have a circuits section call the Deflection board and it is dead,it could be burn any parts of the electronic components on this area.The buzzing sound u hear is the FBT-The high voltage Flyback Transformer have it high voltage current have no where to go,the FBT it could be dead also.This tv can't be done any quick fixes.Must hire a Tv Tech. have to troubleshoot and find out which eclectronic components are dead and require replacing on the tv Deflection sections circuitries of the board.

The Convergence IC's along with the bias resistors need replaced.

The tv have a problems known as a convergence problems,it dead.The tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all it resistors are dead too.These parts on the tv convergence board,must be replaced to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

The tv 100% have a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors picture shadows or 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors are dead too.These parts on the tv convergence board,must be replaced to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.