Question about Pioneer PureVision Pro-800HD 43 in. Plasma HDTV

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Pioneer PRO800HD loud pop and flash of light AXY 1059-c

I am trying to fix this myself since it seems pretty expensive to buy these PSU boards. This one is an AXY1059 C which is used in a variety of Pioneer and Hitachi Plasma TVs.

I attempted to replace the shorted parts and now had a new explosion, I must have missed something.

Here is what I did first time around. I replaced Q127 (FET K2651), it was shorted all ways. I had to replace R217 (.47 ohm near Q127) and R133 (.1 ohm) both were blown apart (the loud pop/flash).

After replacing these, I thought I was fixed, but When I turned it on, it made an even bigger explosion, not quite what I wanted to see.

Now Q129 (SMT transistor AY6) blew off of the PCB and R217 is blown apart again. But what is worse, is an SMT resistor (R218 connecting to Q129) blew off the PCB and I have no idea what its value is.

I also need the value of C164 as it was missing on my TV, I put a 220uf cap in for now as a best guess for filtering. No idea why it was gone.

Does anyone know the values of these parts, or what all to replace to get it working again? I am willing to shotgun all suspect parts now that I have seen the way this thing explodes if I miss something (I suspect Q129 was bad and I didn't see it).

Posted by Jim Skilskyj on

  • Jim Skilskyj Sep 15, 2009

    OK I found out that R218 is an SMT 223 (22K) resistor and C164 is actually a 10V 1200uf cap. I am still working on this supply. Now I have two of these supplies to fix.



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I'm working the same problem. Q127 shorted, R217 & R 133 open. Also have solder blown off one end of R222 and R351 (both sm 200 ohm). Looks like small, short trace evaporated on top layer between D145 and via directly below it. Q129 is open all ways (but not exploded).
This one has C164 installed as 1200 uf, 10V.

Any success getting your going again?

Posted on Oct 26, 2009



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Wow !, I have just done the same thing. I replaced all the same stuff you guys did and I was still missing some low voltages I tried to scope some patterns. The main problem here is no schematics show the power supply board I have a hitachi (pioneer pdu50wx2a) rebadge. The good news is the updated board is an axx1064 it`s an update to the board we are working on. around 330.00 I would get it from pioneer at least you know you will be getting an updated board.

Posted on Mar 17, 2010

  • Anonymous Feb 07, 2011

    This is a little late (understatement), but the power supply for these third gen Pioneers, the AXX1064, is also sold as the HITACHI TS04071. Which can be bought for about half the price ($175 vs 334). They are the exact same part they just carry a different SKU/part number. Hitachi used to sell re-badged Pioneers as their own. They usually even come in the packaging. They can be bought from or



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If that does not work, contact the manufacturer at the number listed on the owners manual to get the TV repaired by a licensed technician.
Pioneer covers the PSU or other parts even out of warranty only when a determined factory defect concerning that model and year had been reported by a number of technicians.
To find the contact see:
USA:Pioneer Electronics
Contact us - Pioneer Europe
Pioneer Electronics Asiacenter
Contact Us - Pioneer UK
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Important: Updated Information Regarding Free Power Supply Replacement for Certain Pioneer Plasmas Pioneer is continuing to offer a free, in-home/office power supply replacement for certain of its second and third generation plasma models listed below for customers who experience a problem with the original power supply. If a model is not listed below, no power supply replacement is needed and no further action needs to be taken.
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Anyone with questions can call Pioneer's toll free hotline at 800-421-1404.
We apologize for any inconvenience.

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