Question about Samsung HCM4215W 42" Rear Projection Television
I have a hcm4215w tv that I got from a friend with a convergence problem. I replaced the complete convergence board about 8 months ago and has been working fine. Over the weekend, the tv was on and it just turned off, then it powered back up and turned back off. It will keep doing this until you turn it off or unplug it. I unplugged the connectors on the convergence board and tried it again and still does the same thing. Is there another common problem with these units that I can replace or is it more involved to repair? Also when the set turns on for the short period of time, the audio turns on and you can hear the station that it is on but it turns off before the picture comes on. Thank you.
Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Posted on Mar 29, 2017
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Posted on Jan 02, 2017
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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