Question about RCA HD50LPW175 50" HDTV

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ATC336 Power Supply

Awesome. Thanks so much for your help and fast response! So have you actually seen a bad power supply mistaken for a bad DM3x?? I thought I may have read that somewhere, but I'm just not sure. Thanks again!


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  • Ben_Eve Jul 10, 2008

    Thanks a ton. You've been a huge help even if unfortunently it's not my power supply. I'll keep my fingers crossed though (except for when I'm soldering). Thanks again. I appreciate it.


    Are you familiar with the HD61THW263 model at all?

  • Ben_Eve Jul 11, 2008

    Well, with the HD61THW263, I'm pretty sure it's the bulb, but I'm not for certain. When first plugged in it gives me the 10 blink error code, then it tries to fire. If it doesn't start, it just gives me the 5 blinks over and over for probably 10 minutes or so until LED just stays lit. Now about 10% of the time it will start up. That has gotten progressively worse over time. A few months ago it was probably 50% of the time. I tried to do the chipper check to find out the 10 blink error, but I couldn't get it sync up for some reason. Here's the thing, sometimes when it doesn't start up - it doesn't do anything. No color, no fans, no ballast trying to strike the lamp, nothing. It just cycles the 5 blinks over and over again. However I still get volume. I'm just really hoping it's not the DM3 on this unit. I'm on my second bulb that has roughly 500 hours on it or so. Any thoughts would be awesome. Thanks again.


  • BenjaminAEve May 11, 2010

    Do you know much about the DM3x module on the HD50LPW175? I fixed 3 of the ACIN power boards with the capacitor fix, and tested them all with a known good DM3x - every one of them worked perfect! But in testing the good power boards with 2 other of my 3 DM3x boards, they are **** in what I think is the "boot-up" sequence. When plugged in, the front LED comes on, blinks 5 times, then just stays lit like it's stuck - the only way to power the TV off is to unplug it. I thought I've read of a DM3x fix before, but I'm not sure. Anything I could replace in there? Thanks a bunch for your help.


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Yes the symptoms of bad capacitors on the Power supply can mimic the symptoms of a failed DM3. Its alot better to try the capacitor change first, as they are a common source of failure and the price of the DM3 is very exspensive.

Posted on Jul 10, 2008

  • Sonny Berry
    Sonny Berry Jul 11, 2008

    I would be surprised if changing out those capacitors didnt fix your problem. Yes I am famillar with all RCA TVs. What seems to be the problem with the HD61THW263?


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