Question about Pioneer PRO-700HD 64" Rear Projection Television

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Tony Fidaleo's Pioneer PRO-700HD

Jamie867 after our last correspondance I began to pull the power supply assembly. I then noticed another bank of fuses and found a 5A/125V (Pioneer part number FU206 per the circuit board) fast burning fuse was burned out. I went to Radio Shack and purchased a bag of the 5A fuses and had the fuse (FU101 10A/250V) tested that I could not see through yesterday and it checked out as good.

I replaced the burned fused and reconnected the power cord but the fuse quickly turned red and burned out (I did this twice and then unplugged everything).

Per the partial service manual I purchased yesterday (did not realize there were 2 parts to the manual) I noted this fuse is part of the Power Supply Assembly (Pioneer part number AWV1710).

Per the pioneer site the power assembly is in stock. I am inclined to replace instead of repair at this juncture. However, before I order a $352 part I want to make sure that is the appropriate course of action, i.e. I don't know if that fuse could blow from a problem in another area/board.

Your recommendations are appreciated. I would be glad to email the Service Manual I have if that helps, it is in a PDF file.

Thanks,
Tony F.

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I had an issue with my PRO-700HD: The main power would come on fine, however when i would power on the standby power, it would click on, the light would turn green, and then it would turn off again a second later.

I called a service tech, and they repaired it. I asked whether or not it was the power assembly, and they said no, it was the convergance circuit. They were here for about an hour, one person doing something with a drill behind the TV, the other was soldering a circuit board they had pulled out.

Posted on Oct 24, 2009

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I have the same problem with my tv now. Did you end up finding a solution? I dont want to pay the 350 dollars. Please help. my email is rebelguy52@gmail.com

Posted on Aug 10, 2009

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Once I look at the schematic diagram, I might be able to know the part that is blowing that fuse.

Posted on Jul 28, 2008

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Posted on Jan 02, 2017

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Pioneer plasma display pro- 940 hd. All voltajes in power supply board are ok , there is no stand by light,does not power on , no any thing at all. Would you helpo me. Tony


Plasma and LCD TV sets are prone to having capacitors in the power supply section fail. This is the most likely cause for the probem you describe. When capacitors fail your will commonly see one or more of the following symptoms.
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  • TV is making a clicking noise.
  • TV takes a while to come on
  • Screen is very dim or flickers.

Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

Here are pictures of capacitors...Notice that the ones below look bloated. They have failed and will need to be repalced.



ecollier2012.jpg
Capacitor being replaced! Fairly easy DIY fix.

ecollier2012_0.jpg
Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

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I would check the fuse that you couldn't see through. A set that is 9 years old might be difficult to get a new board for.

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When you push the main power button on and the standby button it turns green for 2 seconds then turns right back to red what's going on???


1 or 2 things, Blowed Fuse on the Deflection power supply board
6.3 amps will be located in the Middle of chassis.
STK ICs need to be replaced STK392-110 use 120s
Mats Electronics has them 1-800-628-1118

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OK Its your power supply and it can be fixd for free due to a recall.
PLEASE READ BELOW what I found out.
Here's the whole notice:

Important: Free Power Supply Replacement for Certain Pioneer Plasmas

Pioneer is continuing to offer a free, in-home power supply replacement for certain of its second and third generation plasma models listed below for consumers who experience a problem with the original power supply. If a consumer model is not listed below, no power supply replacement is needed and no further action needs to be taken.

If you own or use a plasma listed below, please call our toll free hotline at 1-800-421-1404 to arrange a time to have your plasma's power supply upgraded in your home at no charge.

Consumer Plasma Models (12 listed):

PDP-505HD
PDP-503PU
PDP-5030HD
PDP-5031HD
PDP-433PU
PDP-4300
PDP-4310
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PRO-800HD
PRO-800HDI
PRO-1000HD
PRO-1000HDI
The issue with the power supply in the plasmas listed above does not pose any health or safety risk. Pioneer has received reports that the power supply in the affected models may fail. In some cases, a loud popping sound can be heard when a power supply fails. After the power supply fails, the plasma is no longer operable.

We apologize for any inconvenience, and we thank you for your cooperation.

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If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/

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The failure is not on the power supply but the convergence amplifiers STK ICs have the 24 volts shorted.
If that fuse is blowing, de-solder the convergence ICs and put a new fuse to power up the TV; you should see distorted video when the TV powers up and the fuse should not blow.
The service manual migth not help much in this case since the failure is easy to pin point.

Good Luck.

Oct 03, 2008 | Pioneer PRO-700HD 64" Rear Projection...

1 Answer

Continuing questions from Tony Fidaleo


I've sent you an email to request the copy of your PDF file to see what part in the circuit is making the fuse blow.

Jul 28, 2008 | Pioneer PRO-700HD 64" Rear Projection...

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