Question about Pioneer SD-P55A5K 55" Rear Projection Television

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Pioneer SD-P55A5 Shuts off and must be reset with Main Power Switch

We got a Pioneer SD-P55A5 TV for free because you can be watching it when it totally shuts off. You don't have to pull the power plug but you do have to cycle the main power switch, and then it works immediately. It may run for minutes, or hours. I pulled the back cover and when it shuts off a red light on the power supply board illuminates. It is labeled S145, if I am reading it correctly. When you cycle main power it goes out, and when it is operating correctly, it remains out. I figured it is a warning light, but I don't know what it is telling me. Any help is greatly appreciated.

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Re: Pioneer SD-P55A5 Shuts off and must be reset with...

If you are not a tech take your set to be repaired your tv illness is in the power supply or related circuit.good luck.

Posted on May 14, 2007

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How do I find a reset button fo my pioneer projection tv model # sd582hd5?

If the Projection Monitor does not operate properly, reset it as

1. Turn off the power of the unit with the MAIN POWER switch.
2. After approximately 1 minute, turn on the power with MAIN POWER switch and POWER button.

Page 18 of the Users Manual

Feb 03, 2015 | Pioneer Projection Televisions

2 Answers

Pioneer SD-P55A5 shut off during use and wont advance past standby mode

This is a problem related to the hue controlls in the TV. It is quite common.

Fix: You can go into the TV settings and try adjusting the hue/tint there.

If adjusting settings does not work, request help from a technician to fix it for you since it will take adjusting the hue internally and if you do not do it correctly it can damage your television.

I hope this helps ya!

Jul 28, 2008 | Pioneer SD-P55A5K 55" Rear Projection...

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Pioneer SD582HD5 turns on for a while and then shuts down. I have read that the STK392-110 should be changed out to the STK392-180 to stop the TV from powering down into standby. when I go into the back...

A lot of these sets had convergence problems--usually if that is the case the set will not come back on.

They also had solder problems on mostly the main power board--if that is where that transformer is I would suggest you mark and unplug all the plugs and remove that board-- If you look closely you may find you have a cracked connection or connections around it---

A good idea is if you do this and find a bad connection take some time and look that whole board carefully--with it out I would go over it and solder any questionable connections---A lot of these sets use lead free solder and it does not stick real good--bad connections develop after time from expansion and contraction as the board gets hot and then cools off.

Let me know what you find--I am here to help people.

If this helps you, rate this solution as I do this here for free.


Nov 08, 2009 | Pioneer SD-582HD5 58" Rear Projection...

2 Answers

Pioneer sd-582hd5 shuts off while watching

internal components probably need to be cleaned.... sounds like a problem with t.v. overheating

Jul 11, 2009 | Pioneer SD-532HD5 53" Rear Projection...

1 Answer

Pioneer 50 inch projection tv won't turn on

I only fine 5 fuse where is the 6 fuse locate? Please help I found the 5 on the power board... is the 6 fuse somewhere else not with the power board?

Mar 15, 2009 | Pioneer SD-P50A3Q 50" Rear Projection...

2 Answers

SD-532HD5 TV shuts off when watching

Its is a cold solder joint on the board. The board is the one located at the bottom right of the tv when looking at the rear. Mine did the same thing. After refreshing mose of the large solder pints on the board, it stopped. Hope this helps!

Nov 11, 2008 | Pioneer SD-533HD5 53" Rear Projection HDTV

1 Answer

Pioneer SD-p5073-K Shuts off

it is the power supply board an know problem with pioneer. If you have any soldering experience you can remove the powersupply board and resolder the tracks and as many parts as you can. I had the same problem and not the power supply works great. You will soon have other problems like pic and sound going intermittant where you have to hit the tv to get it back on. more solder problems on video main board. best of luck

Aug 22, 2008 | Pioneer SD-P50A5-K 50" Rear Projection...

1 Answer

Power cuts off Pioneer SD-P50A5-K about 9 years old

Probably started as a bad solder connection but if it's blowing fuse FU106 now, you're probably in for a new set as that usually means your convergence IC's are bad along with a pair of darlington transistors that's mounted to the heatsink nearby. With the age of the set it may not be worth the trouble. If no fuses are blowing, you could still have a bad solder connection near the Switched Mode Power supply transformer. If that isn't it, you could have a bad High Voltage Block and you may end up having to replace the deflection board as well thank you Pioneer.

Feb 02, 2008 | Pioneer SD-P50A5-K 50" Rear Projection...

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

1 Answer

T.V powers off

if that is a short for sure it will shut off permanently. probably a loose connection(cold solder). have it inspect physically and resolder if possible. good luck!

Feb 09, 2007 | Pioneer SD-P62A5-K TV

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