Question about JVC AV-48WP30 48" Rear Projection Television
I tried adjusting convergence, just trying to keep from having to call a repairman as I know it costs.
How can I fix startiing with access to the boards.
Your TV most likely has one or more possible problems.
Problem #1: Convergence Chip Failure ( common problem )
Here are some of the most common symptoms and example photos of a convergence problem
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 convergenRed lines and shadows, convergence wont work - 2c07611.pnge bad and should be replaced. This is a common problem.
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.
Red lines and shadows, convergence wont work - 2c07611.pngef="http://www.fixya.com/support/t497723-colors_dont_line_up#" >TV set after fluid change
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.
Posted on Mar 29, 2009
You can go to tvrepairkits.com and get everything you need for this TV including pictorial instructions and if you hit a snag there is free live on-line tech assistance with a kit purchase in case you hit a snag with the repair
Posted on Jun 18, 2009
Go in and find the conv ICs, they will be mounted on a big heatsink and the wires going to the conv yokes will most likely plug in somewhere closeby.
Conv ICs are the workhorse of the CRT RPTV, and it is not unusual at all for them to need to be changed out at some time in the life of a CRT RPTV.
Posted on Feb 04, 2008
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Posted on Jan 02, 2017
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