Question about Samsung HCM4216W 42" Rear Projection Television
Recently repaired the convergence problem with the tv; replace the two STKs, the pico fuse, and the fuse resistors. After converging, the set had a beautiful picture for about an hour or two, then it shut down. Turned it on again, and in 5 to 10 seconds it shut down again. Disconnected the wires from the convergence board and the set played continuously. Thought it might be solder issue, so I removed the main deflection board (on right side as you look in from the back) and checked for cold solders. Replaced the board, but still has same problem. I am at a loss as I don't have a schematic. Any ideas as to what this problem could be would be greatly appreciated. Thanks in advance.
Low ohm resistors are open or poor solder connections on the bottom of a convergence IC.
You need to look at resistors in good light with magnifying glass. Bad ones may show as discolored or burnt.
The repair needs someone that has the schematic for the convergence cct, and can replace the burnt resistors or replace the whole convergence board.
If you are near Calgary, call me, if not, find someone that has done it before, preferably many times.
Posted on Aug 15, 2008
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Posted on Jan 02, 2017
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