Question about Pioneer SD-P50A5-K 50" Rear Projection Television

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SD P50A3 Q red Standby is on....will not power up.

The red standby light is on...when i push the power button on the set or the remote the light turns green for a split second...then the tv makes a pop sound and returns to the red standby light...????

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Re: SD P50A3 Q red Standby is on....will not power up.

Ok sir you have defective power supply at hot side section! and the power oscillstion circuit! your unit need to diagnos to know the exact defective parts!

Posted on Oct 22, 2007

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Can't turn on

When you turn the MAIN off you are killing all power to the set---Some advice---If you Google the model number of this set with the word problem after it you should find what I have seen a lot in these sets: they develop bad solder connections on the power supply printed circuit board---usually the board is about 18 inches tall and 12 inches wide--A number of sites online offer to have you ship them the board and they will resolder it for you.
I have repaired about 12 of these with this problem in the last 2 years---The board has to be removed(there are quite a few plugs that need to be labeled and removed and lots of screws that secure the board in place.)

Maybe not a job for a do it yourself person but the soldering (if it is your problem) will take about 45 minutes(including removal and installing board back).

Like most modern sets this set uses lead free solder and it is soldered(the boards) in a wave or one step process---over time from heat and expansion some connections may crack or even break loose----I would look at the POWER SUPPLY board(follow the power cord as it goes right to it)

If you have any questions or need help please contact me here.

I do this here for free so if this information has helped you take a minute and give me a vote here.


Sep 06, 2009 | Pioneer SD-533HD5 53" Rear Projection HDTV

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Tv went off while watching a program power standby red light blinks 6 times then pauses then repeats tried unplugging unit waiting a few minutes then replugged same results nothing. can anyone help me ?...

Here's an excerpt from the Sony Manual online. And the link -

The POWER/STANDBY (red) indicator flashes three times
If your power/standby indicator is flashing in a pattern of three flashes, this may indicates that the lamp cover is not attached securely. Follow the directions in the Operating Manual under changing your lamp that related to closing and securing the Lamp Cover. Ensure that the Lamp Cover Door is securely fastened by tightening each screw.

The POWER/STANDBY (red) indicator flashes continously
If your power/standby indicator is flashing continuously, and the lamp cover has been secured, your TV may be in need of service.

The POWER/STANDBY indicator is lit up green (not flashing)
A sustained green light indicates your TV is on.

The POWER/STANDBY indicator is lit up red (not flashing)
A sustained red light from your power/standby indicator simply indicates that your TV is in standby mode. This shows you that your TV is ready to be turned on with the remote.

Is it the power light and not the lamp light? If the lamp light is flashing then replace the lamp.

Apr 07, 2009 | Sony Grand WEGA KDF-55XS955 55" Rear...

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Pioneer rear screen projection tv model #sd p6091-k when i push the standby button in on the front the little standby light glows red like it should but when i push the on button it should turn on and glow...

wait a minute you wanted me to pay you to tell me how to fix it... now you want me to tell you how i did it thanks ...well for 9.99 a month ill tell thanks

Nov 08, 2008 | Projection Televisions

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Service menu

How to Enter Service Mode
1. Turn on the main power switch to place this set in standby
mode. (LED will light in red.)
2. Press the buttons on the commander as follows, and enter
service mode.

PRESS these buttons in sequence


Method of Cancellation from Service Mode
1. Set the standby mode (Press “ (TV STANDBY)” button
on the commander), then press “ (TV STANDBY)” button
again, hereupon it becomes TV mode.


Oct 29, 2008 | Sony KP-53HS30 53" Rear Projection...

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Tv turns off

cant solve, but my problem is identical!

Oct 05, 2008 | Pioneer SD-P50A3-K TV

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Samsung hc-r5245w no power

Hello Chac c,

The reason that you are getting a 'red light' is because your lamp is burned out. There is a panel on the back of the TV that gives you access to this lamp. You can remove it and check the part# to be sure then replace it. I did a quick search for you just based on the model# which you provided. You can see it here -

Hope this helps :)

Mar 17, 2008 | Samsung HC-R5245W 52" HDTV

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same problem here

Dec 20, 2007 | Pioneer SD-P50A3-K TV

1 Answer

Tv refuses to turn on

your tv is defected need to take in to the tech for repairs.power supply problem or related circuit.good luck

May 20, 2007 | Pioneer SD-P62A5-K TV

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