Perpetual Technologies P-3A

Awhile back, the DC power jack on one of my heavily modded Perpetual Technologies P-3A DACs disintegrated. I couldn't locate the proper replacement part. As a temporary fix, I glued the part together so that I could still listen to music in my main system. Only recently, someone with a similar problem posted in a forum asking about this part, and within a few days, someone from Perpetual Technologies posted a part number in response. I should've just e-mailed them in the first place, but, since my temporary fix was working, I didn't bother. I ordered the part (actually 10 of them in case my other gear fails) the other day and fired up my soldering iron last night. It was a fun, easy fix. I love the smell of melting solder in the morning! While I had the unit open, I inserted some bits of sorbothane to the inside front wall of the DAC's shell to dampen any vibration to the circuit board, which floats a bit loosely in a slotted track and butts against the front of the inside of the case. This seems to have helped performance (somewhat better spatial presentation), but, I could be mistaken, for all you objectivists.

By Jeff Wong • Posted: Apr 28, 2006

Dimensions: 800x600

Size: 132kb

Filed Under: DIY Projects

Comments

Submitted by Monty on April 28, 2006 - 4:39pm.

Hey Jeff, I've been dying to try out the tweaks to the Marantz 67SE player. I have zero knowledge or experience with electronics, but I would be willing to pay you to give it a try on my player if you feel up to it. Check out this link and see what you think. This is an old player that I have enjoyed and have only been patiently waiting for it to croak to upgrade. Naturally, any potential disaster would be no big deal on my end and well worth the risk. I would hold you in NO WAY responsible. See whatcha think... http://www.tnt-audio.com/clinica/cd67.html

Submitted by Jeff Wong on April 28, 2006 - 7:50pm.

Monty - I've bookmarked the site and will read through it more carefully when I'm less tired. I've taken a cursory glance at the list of mods... the op-amp stuff and thru-hole caps and bypassing can be done quite easily - it's just parts substitution and the biggest hassle is figuring out what exact parts are needed and ordering them. I'm not equipped to handle surface mount stuff, and while I'm decent with a soldering iron, I'm no Modmeister. I could probably help you out with some of that basic stuff, but, there are people far better qualified than I am to do it...

Holy Moley! There's a 216 page thread at diyAudio about mods for this player:

http://www.diyaudio.com/forums/showthread.php?s=&threadid=54009&perpage=...