Question about Pioneer Elite PRO-1140HD 50 in. Plasma HDTV

2 Answers

TV & Tuner stays in Standby mode

TV and Tuner stays on standby but doesn't turn on
REd LCD stays on = standby mode
The Green LCD never comes on

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  • Pioneer Master
  • 5,568 Answers

Assuming you have tried changing batteries in your remote and any front panel power switch your set has, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself.  What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.
 
Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.  
 
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.
 

Posted on Oct 29, 2008

  • dick_o234
    dick_o234 Jul 09, 2013

    how much would it cost to fix

  • Steve Allison
    Steve Allison Jul 10, 2013

    There is a chance that a replacement board from 'shopjimmy' is a 'pull' from a salvage set and may produce the same results. Unfortunately, if the mfr. hasn't upgraded component quality, the same failure will occur again. It's likely that the problem is caused by a decayed (internally) electrolytic capacitor and unless it failed catastrophically, there may be no external sings of it but can only be found using an RCL meter/bridge that can measure not only the part's value but also internal losses. Such a meter costs ~$200 and may not be in every technician's possession. A standard electrolytic capacitor subjected to certain conditions will fail over time, more costly caps are designed for 'switched mode power supply' service and be more resistant to such failures. When I find one (or more) that have failed because of this, it is replaced with the better part and paralleled with a multi-layered ceramic cap with a value of .1-.47uFd with appropriate voltage rating. This keeps the high frequencies and fast rise times from damaging the electrolytic cap and can protect it from failure.

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  • Master
  • 1,003 Answers

Sounds like a bad mainbord or power supply parts @ www.shopjimmy.com

Posted on Mar 10, 2013

  • dick_o234
    dick_o234 Jul 09, 2013

    how much would it cost to be fixed if it was either of those parts

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