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RCA projector blew 5 amp fuse off line in when fuse was replaced picture came up with smaller picture on screen and convergence way out.

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  • wayfastytee Jun 03, 2008

    where can i buy the fuse fl2321? mouser.com hsa not had it in stock for weeks anywhere else carry it''?? thanks

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Whats the model number and what was the fuse number that blew/ was it FL231 the fuse in the middle? If so you need a convergence power supply board.

Posted on May 20, 2008

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Kd-46wt500 sony big screen colors dont line up is projectors goin out picture on tv is blurry pic looks stretched out as well


Can you verify the model number and see if its A KP46WT500 model? If so chances are just the convergence Ics ( stk 392-560 ) and pico fuses are the problem. There are 6 3.5 amp pico fuses directly beneath the heat sink fins on the D board ( where the Convergence ICs are located) Check those six pico fuses and also two 5 amp picos on the G board ( where power cord plugs in) if any of the picos on either board are open then the Convergence ICs will require replacement.

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I can't find auto converge choice in menu of rca 52" rear projection tv.model # R 52 WH 74.


You have 3 pico fuses by your fly-back transformer. One of them blew that controls your convergence circuit. Your TV now thinks that it is a Basic CRT set with 1 tube. Find the bad fuse and replace with a 1/2 amp pico fuse, and re-solder all the pins of your fly-back transformer. Your menu should have the convergence option again.

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My RCA P52937SG projection tv. Picture distorted. I beleive it has to do with the green circuit / projector. Everything needs to be aligned to green. Green projector is on, but, in alignment screen I get...


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

Mar 28, 2011 | RCA R52WH73 Projection Television

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Fuse blew out in our 52" rca projection tv. replaced it...now the three colors don't line up. what could be the problem?


If one or more of the color components of the picture is also distorted in a bow-tie shape, you have a blown convergence amplifier module - the fuse went when the amplifier melted down. This is a common failure in CRT-type rear projection TVs. The modules are black plastic slabs about 3" wide by 1 11/16" high by 5/16" thick with 22 pins on the bottom edge (more or less, depending on version). They are marked STK392-nnn, where nnn is a three-digit number denoting the specific version. There are two of them, and they will be bolted to one or two flat or finned metal plates to dissipate the heat they generate. Sometimes when they go out, they also burn out some resistors in the convergence circuitry nearby on the circuit board.

If you don't have to replace any resistors, you may not need to readjust the convergence on the set after repairs, provided you don't try to adjust the convergence beforehand.

The part price is generally between $12-$35. Avoid the cheap Chinese no-name knockoffs - they don't last. The major brand supplier of this parts family is Sanyo.

On the other hand, if you just have a minor misalignment, this could have been caused by a mechanical shift in the optics when you dragged the set away from the wall to get at the fuse (if you went "bump" - "oops!"). The problem can be corrected electrically using your remote control - see your owner's manual for the front panel and remote control combination code to get into convergence adjustment mode. Be careful to keep the convergence dot spacing uniform across the screen or your picture will be misshapen, work in small increments, and keep in mind that adjustments in one part of the picture affect convergence elsewhere. If an attempt to adjust the convergence results in no adjustment (you can't move the dots of one or two of the colors) stop - you do have a bad part. Attempting to adjust convergence with a bad part will make a lot of extra convergence adjustment work after repairs.

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My picture is not fitted to the screen.


go into the menu find convergence
some models have auto convergence
if you have the option to manual adjust convergence adjust red and blue DO NOT move green

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You have a problem with convergence and all you may need to do is replace a fuse. Look up convergence for your tv model and hopefully you will get an answer as to where the fuse is located and how to replace it. Very common for RCA tv's

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convergence is the problem. first question do you have convergence in the customer setup menu. if you do not it could be a special small fuse if you do have "convergence" in the setup menu then you most likely have a convergence power board issue. and generally they are replaced. in our shop such board replacement average 124 labor and about 100 for part. if the fuse bout 15 for part and 80 for labor. there are solder connection that cause the blown fuse

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Convergence


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