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Audio Aero Prima 24-bit/192kHz Should I fix it?

I just acquired a Audio Aero Prima CD Player. It uses a Philips CDM12 transport and a 24-bit/192kHz Burr-Brown chip-set. It skips badly. I opened it up and everything looks really clean. There have been some mods:

There is a 3 lead ribbon that runs from the PC bord on the transport and delivers the digital out signal to the digital out section of the main PC board. The connector was removed from the transport end and was soldered directly to the mating connector pins. Then one of the wires was snipped.

The skipping does not seem to be affected by this mod. It behaves the same when using the digital out as when using the audio out with this ribbon disconnected.

I removed the PC board from the transport and it looks like 2 each IC chips have been removed and a wire soldered to jumper from a pin on one to a pin on the other. This can't be good! Does this mod sound familiar to anyone?

I've been thinking of replacing the transport. It is my understanding that a Philips VAM1252 is a direct replacement for the CDM12.

I looked on Ebay and there are several VAM1252 transports for sale. They all seem to be in the $17.00 to $30.00 range and come from sellers in China.

Is it safe to buy from these sources? Does anyone have any experience to share?
kleppermaster
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islandmandan
1,260 posts
 
You didn't mention who performed the mods on your player. I sure hope they knew what they were doing. What they did sounds a bit extreme to me.

About the transport, I purchased a new transport from partstore.com, for my ailing McIntosh MVP 871, for $93, installed it, and it has been working perfectly.

Considering the cost to replace the player (given the mods haven't destroyed it), it is a small price to pay for the potential benefit or risk.

On my new transport, which is out of a Denon 2930, before installation, there is a small solder spot that has to be removed on the transport. It was put there to help discourage static electricity build-up during shipping.

This spot has to be removed for the player to work, and is easy to do, with a copper solder-removing braid, and soldering iron. This may not be required on your particular transport, but it's something to keep in mind.

Let us know how you make out, good luck,
Dan
kleppermaster OP
6 posts
 
Dan,

Thanks for the reply.

I didn't say who performed the mods because I have no idea. It was listed for free on the local craigslist site. The guy I got it from said it worked before he put it into storage. It may just need a bit of cleaning.

He also said the guy he got it from did the mods & perhaps the mods are causing the problem. It sounds like a bit of a mixed message. Perhaps I misunderstood. Perhaps the previous owner told him it worked fine before he put it in storage and is may just need a little cleaning.

Based upon what I see I can't believe the thing ever worked after the mods.

I looked on partstore.com. They don't list the make or model of this CD player. When I search for the transport I get several hits for the CDM12. However, all are no longer available. I tried searching for the VAM1252 and found nothing.

Jim
djohnson54
396 posts
 
Jim, Lubricating the rails may help with the skipping. I have seen others claim that this helps. I've never had to do this but my thought was (if necessary) to use zipper lubricant that you can get at the local sewing/fabric store. It's made for lubricating nylon/plastic parts. Dick
kleppermaster OP
6 posts
 
Dick,

Thanks! I'll give it a try.

Jim
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