20 Most Recent JVC AV-48WP30 48" Rear Projection Television - Page 3 Questions & Answers

It sounds like your alignment is off, there should be a switch in the front panel that turns on a crosshair looking display, then use the dials to move red and green onto the blue lines. this should fix the problem

The blue is not locked it is set. It does not move, the other 2 colors, red and green, are supposed to align with blue.

If you typed like a normal human being and used proper grammar, and punctuation, youd be more likely to get an answer.

Well there is no yellow, there is only red, blue and green, Blue is the set line the other 2 need to be aligned to. If blue is bent or out of alignment then there is a problem with some internal chips that would require a good deal of soldering skill

take your set to a tech for adjustment of the focus.

We had the exact same problem just yesterday when we bought our Sony 46" Bravia LCD. Nobody, neither Comcast Cable or Sony seemed to really know how to get rid of the closed caption at first and we did have a Motorola box - the box is the problem, not the tv. Here is step-by-step instructions that worked for us. 1. While TV is on, power DCT (Digital Cable Terminal) off 2. Press and hold "menu" button on digital terminal (the screen below will appear) 3. Using Up/Down cursors, highlight "Close Caption" 4. Using Left/Right cursors, put - Close Caption: Disabled 5. Press "ok-select" 6. When done, press "power" to exit menu 7. Press "power" again to turn DCT on If you go through these steps slowly, you should have a caption-free screen!

If it will not adjust up or down or left and right the convergence chips need to be replaced.See attached photos of board that is in your set:This can be a do it yourself repair and the parts do not cost a fortune.Can I help?SD TECH

you can get the AV48WP30 convergence repair kit from www.tvrepairworld.com the kit contains the two ICs and the associated resistors. Full repair instructions are included with the repair kit.

The value of the resistors should not be changed (either resistance or wattage) as their job is to self destruct if one of the chips shorts.

It is very unusual in this set to see more than two of the resistors bad.

FYI: the 150 chip is a higher current device but will have no longer life than the original as the problem is that the heat sink grease drys out and this causes the failure.


The original resistors are metal oxide type and flameproof or carbon resistors should not be used to replace them.

Let me know if you have questions.


SD TECH

See attached photos of board used in this set for convergence:
It uses two of the STK-392-110 chips and can be a do it yourself repair if you can solder.

I can tell you how to get at the board, best place to buy the parts and more.

BEFORE YOU RATE THIS INFORMATION LET ME KNOW IF PICTURES TELL YOU SOMETHING YOU DID NOT KNOW.







This is the board in your set with the parts


SD TECH

Double check the model number as this model does not use a lamp; It has three picture tubes which almost never fail.

Give me as much information as you can (does power light blink etc)

Before you rate this information let me know what you find.

SD TECH

your convergence ics are going bad. usually around 150 to 250 dollar repair.

Is this something you can handle repairing before we get started? There are several items that would need to be checked and if your not handy around live electrical circuits and boards then I suggest you call a repair man. These sets have plenty of high voltage areas that need to be checked. Have you checked the bulb and made sure it is not burned out? Are there any blinking codes on the front of the set? if so what is the color and pattern. I need this to help diagnose the issue.
Other wise I suspect a open solder joint in the convergence boards.
the most likely culprit for this is the stk chips on the convergence board (JVC didn't put nearly enough heat sink compound on should be a small layer all the way across they put on a couple dabs) I hear tale you can check this out by disconnecting the convergence board and turning on the set . only go after the convergence board from the front (behind the speaker grill is another panel, the convergence card is right behind there) there is a sneak circuit which will kick in possibly destroying at least the dvi input and mabie more if the set is powered on with the back removed and you didn't put a jumper in the right place or cover over a hole in the back of the dvi module.
The CRT driver ICs are prone to shorting and cause this symptom Often then is a small burn mark on the CRT board under the affected IC (but not always). The IC should be a TDA6111Q. Be sure to note the proper position
of the IC as it should face with the letters TOWARD the heat sink!!!

Please do us a favor and rate this solution after reading.

Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both. Repair kits with instructions are also avail from www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

• 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.
• TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some pics of convergence problems.





SOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Common 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

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Please do us a favor and rate this solution after reading

Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both. Repair kits with instructions are also avail from www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

• 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.
• TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some pics of convergence problems.





SOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Common 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

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Hi, I do hear often about this problem, check the power supply its possible it was damged during the lightinin.

check the settings for center sound

Well, the bulbs can be up to 260 dollars per lamp, depending on the TV and if the bulbs are separate.It's not very hard to change them out if you have a little experience in taking those types of items apart, but I would definitely look into it.

Hello
Sorry. It can't be connected to a computer diretly. It is not VGA compactable. But if you buy one VGA to audio video converter, you can connect the tv in between. OK.