Question about JVC AV-48WP30 48" Rear Projection Television
You need to set the Convergence of the TV set.
Some TV sets have a Magic Focus on the front panel, if yours has this press it with the TV on.
If your TV does not have the Magic Focus button, go in to the menu and there should be an Advanced Setup option ether in the main menu or under the video setup menu. Then find set Convergence. You will need to be directly in front of the TV set and at the normal distance away (where you usually view it from) use the arrows on the remote to move the color i.e. green, red, blue so that it disappears behind the white + (cross). this must be done for all of the mentioned colors.
Posted on Feb 05, 2010
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Posted on Jan 02, 2017
SOURCE: rca p56927 colors out of line
It's most likely a failure of the convergence amp and some other power supply problem in the convergence circuit by the sounds of it... Your unit takes an STK730-130 and some 750k 1/4w resistors for the yoke return. I would bet two or more of them are out of value, at least R19702 and R19703... There are also two diodes Cr19710 and Cr19709. P/N# 164590 which commonly open under a load and are recommended to replace anytime the convergence amp is replaced. Also check Q19700 (Bc457) which crosses nicely to an NTE123a...
Not real expensive in a reputable shop - just a pain this time of the year.. I would recommend getting it repaired, it's worth it..
Posted on Dec 19, 2007
SOURCE: i have three
I had the same problem. Thanks to the many posts on this site I was able to deduct that it was the Fusible Link F231. (See other posts about convergence problems) Was able to purchase them at mouser.com. Part# 576-3960400000 Littelfuse Fuses - A 125V UL TL LL .400A . They are only 55 cents plus shipping. I bought 5 for under $10 shipped. Only took 2 days to get them. Replaced it (needs to be re-soldered to board) and TV works like a charm!! I couldn't believe it. What a lifesaver!! Now I'm set if the fuse goes again...
Posted on Feb 01, 2008
SOURCE: color misaligned in RCA P52927
Hi,sounds like the convergence power supply reg.has failed,when this ic fails the adj. projection tv leaves the menu,this ic is located on the board above the board with 6 heat sinks on it mounted on the black plastic,its the ic that is heawt sinked on this board,part number is 215530
Posted on Mar 07, 2008
This is what is known as convergence. a projection tube ussally has three picture tubes.. red green blue. they all have to align. the concave picture indicates complete loss of convergence or convegence power supply. First question on these sets Do you have the convergence option in the customer menu under setup. if you do not this is a indication of the common "FL231 fuse problem" and inexpensive simple repair. I have wrote and artilcle on this under my tips and trick section. If you do have the option then next does autoconvergence work. in you case i would not think it work. under blue and red manual convergence does the crosshairs move. if not then this is indication of convergence power supply board. if they move at all this may indicate a convergence amplifer problem.
Posted on Oct 01, 2008
your convergence IC;s are out, they cost about $40, if you know how to solder, you can do it your self, if not , I would try to find somone that can, service centers charge about 4 or 5 hundred, after you get the new ones, there easy to find on the board in the back of the tv
Posted on Jan 08, 2009
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