Question about Samsung HCM4215W 42" Rear Projection Television

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Replaced convergence brd but now picture goes dark and audio stays on

I have peviously replaced my deflection brd and then i replaced the convergence board. The convergence brd fixed my convergence problem but only lasted one day. Now the picture goes dark but the audio stays on. I tried disconnecting the power from the convergence board but that didn't bring the picture back. It may be an overheating problem...the picture came back for about 20 minutes and then went out again. Any thoughts?

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  • orbitline Apr 11, 2008

    I double checked that all connectors were securely plugged in but still no picture. The picture will come on for about 10 minutes and then go off with the sound still on....any other suggestions?

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I would suggest to go back and make sure that all the connectors are firmly inserted in their respective plugs.
Let me know if you need further assistance.

Posted on Apr 09, 2008

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I purchased the convergence chips for Samsung PCL5415RX/XAA TV. Do I need to remove the entire sub deflection board to R&R them?


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Green button comes on for 10 secs then goes off


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the problem is not to do with the deflection! it is still working if you are seeing a picture, it is the power supply for the convergence. it isn't working at this time. it is usually a smaller separate pcb
if this supply isn't working the picture looks wacked. rca's seldom have an issue with convergence and are made better than most you will notice the heat sinks for the convergence output that are discreet and will outlast many other brands that use chips.put a dvm on the output of the supply to confirm. if power is there then the seldom problematic outputs is to blame.

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2 Answers

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you have the ATC311 chassis. do this proceedure and you can track down where the problem is. let me know if you need more assistance. i can also post a link where you can get the training manual at a cheap cost emailed to you if you would like a copy.
5. Apply AC power and press power button.
6. If LED turns on and then off, disconnect J11501 (Audio CBA) and press power
button again. If power LED comes on and stays on suspect Audio CBA. If LED
still flashes or does not light go to step 7.
7. Disconnect J26903 (AV IN CBA) and press power button again. If power LED
comes on and stays on suspect AV IN CBA. If LED still flashes or does not
light go to next step.
8. Disconnect J19500 (Convergence CBA) and press power button again. If
power LED comes on and stays on troubleshoot the Convergence CBA. If
LED still flashes or does not light go to next step.

9. Disconnect J14801 (Deflection CBA) and press power button again. If power
LED comes on and stays on suspect Deflection CBA. If LED still flashes or
does not light suspect DM2 module.

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1 Answer

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1 Answer

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