Question about RCA D52W20 52" Rear Projection HDTV-Ready Television

2 Answers

When i turn the power on the green light comes on for a few secounds and goes off

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  • Chuck Dixon Jan 31, 2010

    I replaced capacirors cp150,cp120,cp114 and i still have the same problem

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2 Answers

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  • RCA Master
  • 5,807 Answers

Hi,

1 a ) possibly

there might also be bulge capacitors ( CP150 and CP120 / CP114 )

CP-150 2200uf/16V
CP120 220uf/35V
CP114 220/35V


b ) a shorted horizontal output transistor TL010

when i turn the power - 5fc2b07.jpg


here is a sample picture of the transistor

785f39e.jpg


it is available at

http://tvrepairworld.com/rca_repair_kits


check on the lower portion of the page, there are also more repair kits just in case.


c ) partially shorted flyback

8f11914.jpg


All of these are just possibilities, but actual voltage measurement

and good visual look inside the unit might verify what really is causing

the unit to fail to turn on.


my suggestion would be have a friend help you check for power

supply output voltages.



d ) check for U sys B+ ( positive of DP 110 )

B+ is the one supplying the horiz def circuits




having none means a short in the system

having a voltage of say at least 45V means a partially shorted flyback

having a 110V means there is no oscillation, assuming horiz out

is OK


e ) try awhen i turn the power - 035a17d.jpgg these out

035a17d.jpg


f ) there might also be other possible causes like tact switches

in front of the TV ( if the above possible causes are OK )


2) Try also to unplugged first the unit for at least 20 minutes, and plug

it back later to a known good working outlet.



Thank you for choosing FixYa for assistance. I hope that my

information proves useful to you. If so, please take a moment

to provide me with a positive rating. I'd really appreciate it.

Regards,


palaboy

Posted on Jan 31, 2010

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  • Master
  • 10,515 Answers

Hi,

I Suspect Power Supply Board.Open the TV and look for Power Supply Board. Once you find the Board, Pull out the Connectors. Take the Board out. With the help of magnifying glass, you need to check Cold Solder Joints.If not, then Check the Caps and Fuses. I imagine, if this could be due to Power Shut Off, you would be able to Find Some Bulged / Swelled / Leaked Caps. You would smell Ammonia kind of odor. You need to pull them out. Order the same Caps online or go to Radio Shack. It would cost you few bucks, in fact less than 20 bucks. Once you get the Caps, solder them and it is all set.

Note - You need to take all the Precautions as this would involve Voltage.

Let me know, if problem persists so that we could further troubleshoot.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Jan 31, 2010

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