RCA r52wh74 convergence problem - RCA R52WM24 52" HDTV Projection Television

SOURCE: rca model r52wh74

You need to re-solder the circuit board that contains the STK convergence modules. They're on the center circuit board attached to an aluminum heat sink that's about 8" long and 6" tall, about dead center in the circuit board. You may be able to recreate the problem (hour glass effect) by gently moving the heat sink (which the modules are connected to). This gives the hour glass effect on the picture and the advanced convergence screen. This is an indication that the modules pins aren't solidly connected (meaning soldered) properly. Remove the circuit board and clean the old solder off & resolder the modules pins to the circuit board reconnected the board and then retest by again pushing on the heat sink. This is a caused by a minimum effort (a.k.a. minimum cost) solder job, probably done in some 3rd world sweat shop. The "factory" job was good enough for 3-4 years but the heat (and these modules do create a lot of heat) and stress created from repeated use eventually takes it's toll, weakens the pin connections and our problem occurs. take the appropriate cautions working around the high voltage of the set & use a non-conduting piece of wood to push the heat sink when we doing tests. Best of luck, hope ya fix it.

Sonny Berry

• 8617 Answers
• Posted on Aug 10, 2008

SOURCE: I need the diagram schematic

you can get the service manual for the ITC222 at the following link emailed to you and they provide free tech support to help you diagnose the problem when you purchase the manual. Heres the link.
http://servicemanuals.vstore.ca/

SOURCE: R52WH74 WONT CONVERGE

first question is the picture also bowed in on top and bottom. if so you may have the common fl231 fuse problem if you do consult the fl231 problem under the tips and tricks section. if you dont then you defently hav a convergence issue. the thing to look for is under setup do you have the autoconvegence option if you dont then you have that problem.

SOURCE: I need help: Snowy picture/Bad convergence problem/Turns itself o

Have you tried the TV in more than one outlet to make sure it is not an outlet power issue?

SOURCE: I have a RCA TV R52WH74 the color separate and the

hey try reading this link. it sound like the common easy to fix fl231 fuse http://www.fixya.com/support/r1062030-fl231_problem_convergence_not_in