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Old 05-07-2014, 06:30 PM   #1
caraudiodave
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Restoring a Phoenix Gold ZPA0.3

I bought this amp for a good price. It works, but is in desperate need of restoration. The power supply capacitors and rail capacitors need replacing. It is a version 1 which has a notorious problem with the fan control board over heating. The 11 blade fans were replaced with 7 blade fans on version 2, along with lots of updates to the fan board. Here are also over updates that were on the version 2 amps that I will be doing. Finally, once it's al working and good internally he outside will be stripped and repainted in the factory wrinkle black finish. I'm also going to recreate the factory plexi.

How it arrived


Taking it apart


Man is is thing dirty








The new capacitors match the originals in size and colors. They do have a higher capacitance but the same voltage rating





And all of the parts that I ordered




Stay tuned for progress pictures and then the final result.
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2013 Toyota Camry hybrid: Pioneer AVIC-8000NEX, Phoenix Gold ZPA0.3 (300 x 2), Phoenix Gold ZPA0.3 (300 x 2), Phoenix Gold ZPA0.5 (1000 x 1), Dynaudio MD100 (1" tweeters), Dynaudio MW160 (6.5" mids), Eclipse SW8812 (12" aluminum cone subwoofer)

Last edited by caraudiodave; 05-07-2014 at 06:44 PM.
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Old 05-08-2014, 05:56 AM   #2
MAC the KNIFE
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sub'd
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2009 G8 gt
no more Big Gears, buh-bye coilovers... illusions of making this a racecar have passed. 12.78 @112.. not a bad grocery getter
-still LOUD AS FCK though

2006 GTO completely stock. rip at 39k.

99 GAGT 108k miles, Borla cat-back, CAI, 65mm TB, EGR delete, WOT-tech intakes, F-Body Brakes w/ Hawk HPS pads.
Suede headliner, heated seats, jvc HU, infinity speakers+amp+subs, LEDs
-probably less than 1000 miles on it in the last 3 years...
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Old 05-08-2014, 08:34 AM   #3
caraudiodave
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I will try not to disappoint. I'm going get as much done this week as possible. Next week I'm out of town so no progress will be made, but it will order a few more items that I didn't know I needed until I had the amp in my hands. Everything that is in the pictures are standard items needed to upgrade from v1 to v2 or are just replacement caps that I already knew the size of. It turns out that some small caps on the fan board (called power supply board #2 internally at Phoenix Gold) are damaged from heat.
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2013 Toyota Camry hybrid: Pioneer AVIC-8000NEX, Phoenix Gold ZPA0.3 (300 x 2), Phoenix Gold ZPA0.3 (300 x 2), Phoenix Gold ZPA0.5 (1000 x 1), Dynaudio MD100 (1" tweeters), Dynaudio MW160 (6.5" mids), Eclipse SW8812 (12" aluminum cone subwoofer)
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Old 05-08-2014, 06:57 PM   #4
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I removed the power supply caps. Look at that mess under them...


Then the rail caps came off...


Then off came the power supply #2 board...


Power supply #2 board removed. It looks burned, it's not burned until it's black. This board is dis colored but there's nothing I can do other than keeping it from getting worse, which I will do with my modifications. Stay tuned, my next installment will be of the work done to this board.


Here are the old rail caps versus the new ones. Same size, same colors, higher farad rating on the new ones...


Power supply caps...
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2013 Toyota Camry hybrid: Pioneer AVIC-8000NEX, Phoenix Gold ZPA0.3 (300 x 2), Phoenix Gold ZPA0.3 (300 x 2), Phoenix Gold ZPA0.5 (1000 x 1), Dynaudio MD100 (1" tweeters), Dynaudio MW160 (6.5" mids), Eclipse SW8812 (12" aluminum cone subwoofer)

Last edited by caraudiodave; 05-08-2014 at 11:13 PM.
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Old 05-09-2014, 07:13 PM   #5
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Sorry, minimal progress today, the nerve of work to actually make me work today...

I got the bad/old resistors off the board. I did start to install the new ones, but it turns out that some of he ones I ordered were wrong. They were the right ratings but the wrong size. I needed to replace the caps on the board anyways so I ordered the caps and resistors together. I'm replacing the caps with ELNA caps, which are meant to give better audio.

Reminder, here's how it looked when removed from the amp





A close up of the dis colored board



Note that one of the contact pointers for R75 is missing, that's what happens when you either use to much heat or if the board has heat damage those become more brittle. It's ok, that spot stays blank with the v2 revisions.

I got some of the resistors installed.
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2013 Toyota Camry hybrid: Pioneer AVIC-8000NEX, Phoenix Gold ZPA0.3 (300 x 2), Phoenix Gold ZPA0.3 (300 x 2), Phoenix Gold ZPA0.5 (1000 x 1), Dynaudio MD100 (1" tweeters), Dynaudio MW160 (6.5" mids), Eclipse SW8812 (12" aluminum cone subwoofer)

Last edited by caraudiodave; 05-09-2014 at 10:38 PM.
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Old 05-15-2014, 02:52 PM   #6
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So I'm back in town and got to work immediately.

Here are the upgraded caps, they are called ELNA caps and they are meant for audio, rather than general purpose caps.mthey cost a bit more but should improve the sound quality (likely not an audible improvement, but an improvement non-he-less).






So a quick recap of the progress of this board, starting with before, during, then after.





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Old 05-15-2014, 03:12 PM   #7
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Old 05-15-2014, 03:22 PM   #8
MAC the KNIFE
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threads like this are why i owe money to mouser.com....
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2009 G8 gt
no more Big Gears, buh-bye coilovers... illusions of making this a racecar have passed. 12.78 @112.. not a bad grocery getter
-still LOUD AS FCK though

2006 GTO completely stock. rip at 39k.

99 GAGT 108k miles, Borla cat-back, CAI, 65mm TB, EGR delete, WOT-tech intakes, F-Body Brakes w/ Hawk HPS pads.
Suede headliner, heated seats, jvc HU, infinity speakers+amp+subs, LEDs
-probably less than 1000 miles on it in the last 3 years...
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Old 05-15-2014, 03:23 PM   #9
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Quote:
Originally Posted by caraudiodave View Post
.......

I can't find it now, but I remember there being a mil-spec guideline for venting holes being drilled at intervals in the PCB board for high-heat areas. Or maybe you already covered that subject.

Anyway, great work, as usual!
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Old 05-15-2014, 06:18 PM   #10
caraudiodave
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Quote:
Originally Posted by MAC the KNIFE View Post
threads like this are why i owe money to mouser.com....
I hear you on that.

Quote:
Originally Posted by AleroB888 View Post
I can't find it now, but I remember there being a mil-spec guideline for venting holes being drilled at intervals in the PCB board for high-heat areas. Or maybe you already covered that subject.

Anyway, great work, as usual!
Thanks. Yes I've seen that method used, but for this board the suggestion is to space the hot resistors 1/2" away from the board. You will notice that I have done this now.

Ok more pictures now. I got everything on the board done. I need to remove the heat sinks and clean them then apply new thermal paste, but for now the crappy dusting job will have to do.

Old style fan vs new style



My soldering job on the rail caps. It was important to get solder all the way through the VIAs because when I removed e old ones I lost conductivity front to back. After I finished soldering it was good again.


The board all done


And all parts that got replaced
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Old 05-16-2014, 10:56 AM   #11
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And reassembled. It's not ready for testing and I do plan to send the outer case out for professional retexturing and painting, but my touch up will work for now...









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Old 05-16-2014, 02:30 PM   #12
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Question but what do you do with all of the electronics you restore, Dave?

Do you have an A-team van with a million amps, subs, and speakers and drive around with the windows open on weekends blasting music?
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That's why I keep a few black guys around. They really know how to fill my gaping holes. The mini tootsie rolls you asians carry around just come close.
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Old 05-16-2014, 03:26 PM   #13
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Haha, great question Darren. Right now most of it is under the couches in my living room. Nobody ever goes in there anyways, but my wife's rule is she doesn't want to see it. When we buy our next home I will have a man cave where I can display it all. For the display I wanted each of the two amps that were in this series. I also want to have all of the processors that match it on the display, including the rare ones that I have acquired recently.

The PPI amp that I want to display I am going to display with the board separated from the heat sink.

The cool thing is that I can sell any of these for a profit a any time. So if money ever becomes an issue I can cash out. I get messages weekly asking if I'm selling any of my equipment.
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2013 Toyota Camry hybrid: Pioneer AVIC-8000NEX, Phoenix Gold ZPA0.3 (300 x 2), Phoenix Gold ZPA0.3 (300 x 2), Phoenix Gold ZPA0.5 (1000 x 1), Dynaudio MD100 (1" tweeters), Dynaudio MW160 (6.5" mids), Eclipse SW8812 (12" aluminum cone subwoofer)
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Old 05-18-2014, 02:20 AM   #14
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Quote:
Originally Posted by SikMindz View Post
Question but what do you do with all of the electronics you restore, Dave?

Do you have an A-team van with a million amps, subs, and speakers and drive around with the windows open on weekends blasting music?
Hey I wanted to give a better answer now that I've made a few decisions.

Here are my amps, with a description of what I'm doing with them...
Phoenix Gold ZPA0.5: using it
Phoenix gold ZPA0.5: using it
Phoenix gold ZPA0.5: collecting it, might use it
Phoenix gold ZPA0.3: collecting it, might use it
Phoenix gold ZX475ti: soon for sale, needs caps and testing
Phoenix gold ZX475ti: soon for sale, needs caps but is in great shape
Phoenix gold ZX600ti: soon for sale, just needs testing
PPI PC2350: soon for sale, just needs reassembly
PPI PC21400.2: already sold, just waiting to give it to the owner
PPI PC21400.2: for sale when I'm done repairing it
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Old 08-07-2014, 07:30 PM   #15
caraudiodave
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I finally got off my butt and took care of the cosmetics of this amp. I was able to replicate the original plexi that came on the amp. It's not easy because the logo has such small details that it can't be cut from vinyl. On the Phoenix gold forum nobody has successfully replicated these...it appears I might be the first.

Original on top, new one is on the bottom (I had 5 made, the one pictured here is for the larger model)



And I got the metal skins re-powder coated. Now this amp is in as new condition...



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