Question about RCA P46921 46" Rear Projection Television

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Clicking sound coming from my projection TV RCA Model P46921 year 2000

Hey Techman, After a power outage, the TV will not power on, just hearing a clicking sound. Any ideas? Glen

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  • 2 more comments 
  • firestone Mar 31, 2008

    clicking sound when tv is on

  • jonndy Apr 18, 2008

    clicking sound on power up

  • athenaarie Dec 29, 2008

    same here

  • scaledude_20 Feb 27, 2009

    clicks four times, nothing happens

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Bad Flyback xformer = P46921YX1 Part # 239111

P46921YX4 Part # 250694.....................................T.

Posted on Dec 21, 2007

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Rca model p46921: While watching tv the projection dies out, moments later the projection returns. Any idea what is causing this? Thanks, JN


This is most likely the B+ voltage in the tv. You can tell the B+ voltage by looking inside the tv (only if you know what you're doing, VERY HIGH VOLTAGE) and you can see a block box shape with a single red wire running out of the top. This powers the projectors and over time can't keep up with the electric need. Replacement is easy as long as you can find the same model.


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Mar 04, 2011 | RCA P46921 46" Rear Projection Television

1 Answer

RCA P4677OCK


I have P46733AT with the same problem. I ordered schematic and now looking for flyback + high voltage transistor.
When I finished I let you know what's going on.
Goga.

Jul 19, 2008 | RCA P46921 46" Rear Projection Television

1 Answer

I hear a sound like a shortcircuit on backside?


I think the problem is either the power supply/High Voltage board or the IHVT (Integrated High Voltage Transformer). I don't have schematics for this model, in addition you will need to take the IHVT out and perform a ring test on it, also I would advise you to check and see if the Horizontal Output transistor is shorted also, you can do this with an ohmmeter (measure between the collector and ground it should have a high reading if the reading is low the transistor is bad). The ring test can be performed with the use of a Universal Video Analyzer, or a LCR analyzer.

I hope this helps,

Thank you,

Shuttle83

Jul 18, 2008 | RCA P46921 46" Rear Projection Television

1 Answer

Tv wont turn on p52960


Still sounds like the flyback. Rca has had issues throught the years with flybacks failing especially that model.

May 12, 2008 | RCA P52926 52" Rear Projection Television

1 Answer

Tv will not yurn on.


Easy diagnosis = bad flyback.............P46921YX1 = # 239111
P46921YX4 = # 250694......................................T.

Dec 13, 2007 | RCA P46921 46" Rear Projection Television

1 Answer

Cracked Screen


try here:
http://www.mcminone.com/content/content.asp?pid=promo/mfr/rca&CMP=authrca

Dec 12, 2007 | RCA P46921 46" Rear Projection Television

1 Answer

Blue, green, and red colors all off


I would suggest having a repair person come out to your place to fix this problem. I believe the convergence IC are going or have gone bad. I would estimate a $300 - $400 dollar repair bill.

Sep 22, 2007 | RCA P46921 46" Rear Projection Television

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