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Grizzly

Wanted- Vimak CD player info/parts

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Grizzly   

I recently took a punt on a Vimak DT800 in unknown operating condition. It has turned out to be a little bit of a win as it does play beautifully, though the output from the left channel seems to be at a lower level than the right. The only other real issue is a stripped drive gear for the tray which is a simple fix. I will be getting it looked over by someone smarter than I but would love to get hold of some schematics (assuming they will be invaluable to the tech), an owners manual and (long shot) a remote control. 

 

Anyone able to to offer any assistance at all in these regards?

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Grizzly   

Nothing at all?

 

I have discovered that there are 3 status LEDs inside the unit. One seems to be for power and the other 2 for analogue output. If a digital output is engaged on the front panel, the 2 output LEDs go out. Strangely sometimes when the unit is powered up the output LEDs flicker rather than glow, and there is no analogue output. The old "switch it off and back on again" seems to eventually work, but obviously there is an issue to investigate somehow.

 

Interestingly the channel imbalance seems to have rectified itself.....

 

I like to think I am format agnostic, but this is the most engaging digital I've ever heard, in some ways out shining a PS Audio Direct Stream Jr. a couple of nights ago!

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16 hours ago, Grizzly said:

I have discovered that there are 3 status LEDs inside the unit. One seems to be for power and the other 2 for analogue output. If a digital output is engaged on the front panel, the 2 output LEDs go out. Strangely sometimes when the unit is powered up the output LEDs flicker rather than glow, and there is no analogue output. The old "switch it off and back on again" seems to eventually work, but obviously there is an issue to investigate somehow

 

LED's are sometimes used as circuit diodes, I looked at your pics and could not see any in the output stage. 

 

16 hours ago, Grizzly said:

but this is the most engaging digital I've ever heard, in some ways out shining a PS Audio Direct Stream Jr. a couple of nights ago!

 

That's because it's PCM1702 R2R multibit with HDCD, not Delta Sigma.

 

Cheers George 

Edited by georgehifi

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Grizzly   

The LEDs seem to be labelled "AES LOCK" and "PLL LOCK".

Ive taken pics of most of the larger chips. Cant see a PCM1702 marking on any.

Certainly interested if any make sense to you@georgehifif3583bf2be30aaff4e28bf74e2919b5d.jpg4a924ad97e9269243e290e4a28127f9c.jpgdf18c7657cecb911ef5a5aa27f8ae84a.jpg1594c93aa0fca362062b7b1960addaf2.jpg1a7d15c2e6e1bdc9628edd3c3d3c694c.jpg

Sent from my SM-G930F using Tapatalk

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They have nothing to do with the analogue output as you mentioned in your first post, those two are phase lock loop and aes.

And as I explained in your other thread on this unit, you have a PMD100 HDCD chip and PCM1704 dac convertors but they have been sanded and re-badged by Vimak, good luck on getting a circuit diagram if they do this sort of hiding of component identities.

http://uploads.tapatalk-cdn.com/20170810/49e39c23ec344caac69773e93f617524.jpg

 

Cheers George

Edited by georgehifi

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Grizzly   
1 hour ago, georgehifi said:

They have nothing to do with the analogue output as you mentioned in your first post, those two are phase lock loop and aes.

And as I explained in your other thread on this unit, you have a PMD100 HDCD chip and PCM1704 dac convertors but they have been sanded and re-badged by Vimak, good luck on getting a circuit diagram if they do this sort of hiding of component identities.

http://uploads.tapatalk-cdn.com/20170810/49e39c23ec344caac69773e93f617524.jpg

 

Cheers George

 

With some skilful internetting I have found a couple of places (both in Italy) that have worked on Vimak gear in the past so with luck one of them may have some useful information that they may be willing to share.

 

Fingers crossed!

 

A minor note on the sound- Every Wed night a good mate comes over to share new music and banter. We played this and some vinyl and noticed a distinct overlap in tone between the 2, something that has never before been apparent with other CD players. 

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14 minutes ago, Grizzly said:

 

With some skilful internetting I have found a couple of places (both in Italy) that have worked on Vimak gear in the past so with luck one of them may have some useful information that they may be willing to share.

 

Fingers crossed!

 

A minor note on the sound- Every Wed night a good mate comes over to share new music and banter. We played this and some vinyl and noticed a distinct overlap in tone between the 2, something that has never before been apparent with other CD players. 

I remember the Vimak DAC many years ago. wasn't cheap but built like a tank.

You did well.

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