Question about RCA HDLP50W151 50" Rear Projection HDTV

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Hplpw175x7 Thanks for the info. I don't see no power going to the light. Can you take a guess to know if it's the dm($700) or the ballast(200). And which ballast part number would it be?

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  • RCA Master
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Try replacing these 4 capacitors on the power supply first, as thats only abou 5.00 at radio shcak and that may solve your problem as I have had alot of the RCA DLPs have these capacitors go bad. They are capacitors CP624, CP639, CP641 and CP644 try replacing them first as you may just end up not having to pay out alot of cash needlesly. Please let me know if you need further assistance or how changing the capacitors worked and we can go from there to get the set up and running again.

Posted on May 29, 2008

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We lost power the other night. Now I have a continuous green blinking light and it won't turn on. I have tried everything the manual says.


Try Going To The Mitsubishi Web Site. Downloading The Mitsubishi Service Manuals If You Don't Already Have It. It Will recommend The parts You Need To ordering. Circuit board photos are also shown which provide a visual reference during the repair process.

If you decide to have a service technician do the repair, insist that the "DM" module is removed from the TV and ONLY the four 1000uF, 16V Capacitors (Caps) located on the DM Module are replaced. MOST techincians will INSIST on replacing the entire DM Module and not simply the capacitors. The cost is about $200 for a technician to replace the capacitors and $1000 for replacement of the DM Module. As you will read below, doing the repair yourself will cost less than $4.00 for the 4 Caps.

Sep 04, 2011 | Mitsubishi WD-52525 52" Rear Projection...

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Hplpw175x7


I need to know which type lamp assembly you use there are two types type A and Type B. Let me know and I will post a link where you can get a new ballast circuit.

Jun 10, 2008 | RCA HDLP50W151 50" Rear Projection HDTV

1 Answer

Hd50lpw175x7


Ballast Verification Process
1. Short out door switch (SP001)
2. Apply AC power and wait till DM module boots
3. Press power switch and observe spark gap on ballast
4. If spark gap arcs, suspect Lamp. If color wheel starts but ballast won’t strike
lamp, go to next step.
5. Measure BP252 on AC IN CBA for +300Vdc. If missing check door switch, cable
from AC IN CBA to switch and AC IN PCB. If correct go to next step.
6. Monitor pin 2 of BT251 for Ballast ON command from Light Engine. If present
suspect Ballast. If missing suspect Light Engine. Pin 5 of BT251 starts at 3.3V
after power switch is pressed and drops to .18V when the Light Engine sends the
start command. No change on pin 5 indicates Light Engine is suspect, change
on pin 5 with no ballast start, ballast is suspect.

Note: Lamp may arc but not start. Pin 5 of BT251 is "LAMP LIT" and goes to 1.48V
when lamp is lit. If ballast strikes lamp but lamp won’t stay lit, suspect Lamp.

Jun 09, 2008 | RCA HDLP50W151 50" Rear Projection HDTV

2 Answers

I need your help with my DLP TV


YOU PROBABLY NEED A DMD BOARD. THE COST OF THE BOARD IS $900 . YOU CAN GET A LIGHT ENGINE FOR $700 THAT HAS A NEW LAMP, COLOR WHEEL, BALLAST AND DMD.
WHAT A DEAL . THERE IS A $400 CORE ON IT SO YOU WILL HAVE TO SEND BACK YOUR NEW BALLAST AND LAMP TO GET THE CREDIT BACK.
WHEN I GIVE A QUOTE ON THESE SETS FOR REPAIR MOST OF THE TIME IT EXCEEDS THE VALUE OF GETTING A NEWER BETTER SET.
DON.

Jun 04, 2008 | Samsung HLP4663W 46" Rear Projection HDTV

1 Answer

Hplpw175x7


I would try the power supply first as the ATC336 has a history of the bad power supply boards.If the power supply doesnt fix it then I would think it may possibly be the ballast

May 30, 2008 | RCA HDLP50W151 50" Rear Projection HDTV

1 Answer

Dlp 50 inch


sounds like the DM3 isnt powering up the ballast to light the lamp or the ballast may be faulty. i would suggest trouble shooting the DM and ballast voltages.

May 28, 2008 | RCA HDLP50W151 50" Rear Projection HDTV

1 Answer

Ballast / Power board


Hello Kreed13,
As I mentioned this TV doesn't use ballast(s), it user CRTs and the time when you need to change one is if the picture looks out of focus of one of the colors.
You might not even need to change it, if it powers up and you can see it lighting up. These CRTs use a liquid coolant inside to keep them cool, that liquids becomes contaminated over the years and will affect the quality of the picture.
This website has a very good info on how to do it.
Why do you think you need to change the CRTs?

Apr 24, 2008 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Wd 62525 honeycomb pictues


The DM board wont cause that symptom. The DM only directs power that is recieved from the PWB to the ballast fans and etc. That sounds like a problem with the FMT. capacitors 1000uf @16volts numbers C8F21, C8F22, C8F19, and C8F27. those will cause distortions in the video on the V26 chassis. Let me know if you need more info

Mar 27, 2008 | Mitsubishi WD-52525 52" Rear Projection...

3 Answers

Screen not working-Power light on


Possible back light failure. don't know about 'repair for this sort of thing Mu guess is like other small electronics of this type they are made as integrated 'lumps' and there is not a repair option. Try the Tech support at the TT website Especially if it is fairly recent. May be a replacement option

Jul 11, 2007 | Tomtom Go 700 Portable GPS Receiver

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