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Thread: RCA HDLP61W151 Won't Fire Up |
    
New member Username: Mada336
Post Number: 1
Registered: Apr-08
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| Posted on Sunday, April 27, 2008 - 07:42 pm: |
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Two weeks ago my set stopped working. When I turn it on, it makes a buzz and then nothing. Then it makes another buzz and tries again and again. The LED flashes 5 times. It had been making lots of noise for the last year so I replaced the color wheel. It makes no difference. I hear the color wheel spin and then this buzz, but no bulb. I opened the back up and noticed that something glows on the card that powers the bulb. I assume this is the ballast? Anyways, right when it makes the buzz the part on the board glows. Is this normal? How do I tell if it is the power supply, ballast or bulb? The bulb looks fine. I could put a volt meter on the bulb connections when it tries to fire up...I just don't know what it should read. Last thing, The buzz may have always existing, I just don't remember it. Thanks!
Here is a video:
http://www.youtube.com/watch?v=ckV2ychYfe8 The entire thing
http://www.youtube.com/watch?v=4lu11TlH7GM video of the piece that glows inside the set when the buzz occurs |
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Relevant Product Info
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Silver Member Username: Ovadoggvo
Post Number: 148
Registered: May-07
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| Posted on Thursday, May 01, 2008 - 01:36 am: |
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Mada,
The problem you are describing seems to be a ballast issue to me! I would buy a replacment lamp if I were you just to be sure... Discount-Merchant.com has them for $109... Philips brand is highly recommended!
The "Click" "Click" or "Bzzz" noise that you are describing is the Ballast discharging.. This is usually due to a weak ballast that can not "spark" the lamp.
I just described that here as well for a JVC tv:
http://forum.ecoustics.com/bbs/messages/2/176314.html
The ballast discharge is done by a dischage module that resembles a resistor that acually lights up simulating a lamp... helping discharge the high current.... This discharge method is mostly used on P-VIP ballasts (made by OSRAM Sylvania).. On philis ballasts you will normally not see this containted sparking dischage..
Replace your ballast is my recommendation.
ALSO NOTE:
RCA DLP TVs are infamous for bad power supplies. The TVs power button will blink 5 times stating that the lamp is bad.. The problem IS NOT THE LAMP! The power supply has 5-6 capacitors that go bad due standard wear and tear... It is common on RCA's designed power supply board. Just replace the capacitors and your up and running! But shhhhhhhhh... don't tell the servicers.. they like to change your power supply out and charge you $400! But it's not their fault.. They are just trained to swap parts.. no onboard level repair is done at most service centers!
Mada... Your problem is NOT the power supply board... If it was, your ballast would not have any high current to discharge.
YOU CAN NOT TEST the output of a DLP or LCD projection ballast with a standard multimeter because it has a extremely high current output at low voltage...
Hope this helps! |
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