Question about RCA HD50LPW175 50" HDTV

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RCA HD50LPW175 DM3x help??

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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  • Ben_Eve May 15, 2009

    Thank you for the reply. Where exactly located is the shunt diode? Or what number is it?

  • Ben_Eve May 15, 2009

    The DM3x module doesn't have a chopper output does it? All my voltages on my power supplies are good and are working perfectly. I tested all 3 with the one good DM3x module that I have - and all 3 power supplies powered my HD50LPW175 right up. It's just when I test them with 2 other DM3x modules I have, the TV appears to be stuck in a boot-up, front LED is on but unresponsive - no fans are spinning. Could this be a firmware issue possibly?

  • Ben_Eve May 15, 2009

    Does this particular set have a horizontal deflection board? It is a DLP, not a CRT. Forgive me...I know a little, but I'm learning, so I greatly appreciate you help.

  • Ben_Eve May 15, 2009

    Standby power I have: +15v, and -25 from the AC IN. And then to the DM3x module I have +12v, +6v, +33v, +5v, and -5. Then I have +320v going to the ballast.

  • Ben_Eve May 15, 2009

    There is one wire going to the bulb housing, then another coming into it from the light engine. I can't get in there to read the voltages for the wire coming in from the light engine, but I'm sure they are correct since the TV comes on without a problem when I have the good DM3x module in there.

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6 Suggested Answers

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Posted on Jan 02, 2017

Slinteriors
  • 8617 Answers

SOURCE: ATC336 Power Supply Issue?

You can get the capacitors at the following link just leave them a email indicating that you need the capacitors for the ATC336 power supply and they will get back to you quickly, they have the high temp capacitors in stock.
Here is the link
http://servicemanuals.vstore.ca/

Posted on Jul 10, 2008

Slinteriors
  • 8617 Answers

SOURCE: RCA Scenium HDLP50W151YX1

you can get the ATC336 DLP Power board repair kit, that often repairs the 5 blink error code. The kit conbtains the replacement capacitors and the info on which board and capacitors that need replacement and also includes the service manual for the TV on CD. You can get the repair kit at the following link its under the repair kit category

Posted on Sep 27, 2008

  • 1 Answer

SOURCE: replaced lamp. 5 blinks, does not start

the solution is if it gets repaired 3 times, and lamp assembly replacements dont count, i repeat 3 times, best buy will replace it, as they are going to have 2 mine. these rca sceniums are a black hole for money. i have had capacitors replaced, speakers, the lamp twice, what i call the motherboard( the place where you plug in other devices to the tv. and now i still have problem of tv, at times pixelating(this could be caused by cable signal however), and i get a blank screen when i try to turn on. sometimes i have to attempt this 3 times prior to the tv starting. i have a service tech coming wednesday. good thing i bought the 4 yr warranty as all this in on best buy, and now they will have to provide a new television under their lemon laws. service tech just coming to confirm need to repair. THE REVIEWS for this rca are horrendous, like 1 star out of 5. final note : i bought this in june of 2006. solution is if you do not have warranty - QUIT PUTTING MONEY INTO A BLACK HOLE. i bought a 42 in samsung at the same time i did this one and it has never had a problem. so now i will replace this with a samsung dlp, plasma, or lcd - what ever options best buy gives me.

Posted on Mar 08, 2009

  • 147 Answers

SOURCE: bad capacitors? ladywinn

If you take the back off the deflection board is the one on the left. You must remove the board and near the front you will see a capacitor with a puffy top. Replace this one and the three closest capacitors around it. Not easily done unless you have some experience.

Posted on Apr 09, 2009

  • 1 Answer

SOURCE: RCA D52W19B light on power

where do ypu get the cp150 at thanks

Posted on May 16, 2009

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Check these 3 capacitors on your Deflection board. its bottom board left hand side / cp150 2200uf16v and cp114 cp120 220uf 35v if any of them are swollen,vented or puffed up on top replace all 3 capacitors.

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5 Times it is a problem with the lamp.

Either the lamp is gone, or the small pwer board powering the lamp is defective.

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Power supply repair for ATC 336 chassis HD50LPW175


I have seen quite a few of the ATC336 have dead capacitors in the power supply preventing start up . The capacitors in question are CP647, CP624, CP639 and CP641 all were bad. Replaced these capacitors and the sets powerd up and operated

on Feb 23, 2008 | RCA HD50LPW175 50" HDTV

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If it's agreen wire with a stripe (usually yellow) it is likely a chassis ground (ie center plug of 3 prong electrical cord). The best source for schematics I've found (although they cost) is servivcemanuals.net.
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Dec 02, 2009 | RCA HD50LPW175 50" HDTV

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I have a 50 inch RCA Real Projection TV (DLP or HDTV). I just replaced the lamp and everything worked fine. One night it made a big sound and shut off. Now when you turn it on, nothing appears, a few...


you could have a color wheel problem or a power supply problem

one questions did you reinstal the door at the rear
you might want to remove the lamp module and try a reinstal and see if condition changes
as to costs if you can get the color wheel 150.00 or so
there ae several things that could cause this a dmd module a color wheel and power supply or digital board the lamp cover when installed it closes a saftey switch there thats why i ask if you has installed door

Oct 22, 2009 | RCA HD50LPW175 50" HDTV

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the 5 blink error is caused by faulty capacitors on the power board. There is a kit called the ATC336 power supply repair kit which contains the replacement capacitors and instructions that will usually repair that. You can get the repair kit at the following link.
http://servicemanuals.vstore.ca/

Sep 27, 2008 | RCA HD50LPW175 50" HDTV

1 Answer

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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.

Jul 10, 2008 | RCA HD50LPW175 50" HDTV

1 Answer

ATC336 Power Supply Issue?


You can get the capacitors at the following link just leave them a email indicating that you need the capacitors for the ATC336 power supply and they will get back to you quickly, they have the high temp capacitors in stock.
Here is the link
http://servicemanuals.vstore.ca/

Jul 10, 2008 | RCA HD50LPW175 50" HDTV

1 Answer

Hplpw175x7


Thats a good price as long as they guarantee that it works. How were you able to pull a capacitor off without un-soldering it?

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Rca hd50lpw175


I'm sure you've found out by now that your bulb was going bad...

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