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Old 14th October 2012, 05:34 PM   #6351
TheGimp is offline TheGimp  United States
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C11 is wrong, 0.1uF should be 1nF. I changed it already.

Flux has been removed with cleaning solvent.

I'll re-solder them tomorrow during my lunch break using the SMT station.
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Old 14th October 2012, 05:36 PM   #6352
tvicol is offline tvicol  Romania
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On other hand, I see that you used a polystyrene capacitor in C11 position. Here you need a very low esr cap, like silver-mica or ceramic CG0. Polystyrene have big esr and quite big esl, I would not recomend in this particular place.

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Tibi
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Old 14th October 2012, 09:04 PM   #6353
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Tibi - thanks indeed. I just wanted a rough indication to start gathering parts for the chassis...

Thanks, and great work!

Fran
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Old 14th October 2012, 10:33 PM   #6354
TheGimp is offline TheGimp  United States
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Thanks Tibi,

I'll see if I can get either at the local electronics shop tomorrow.

I installed two 500pf Silver Mica in parallel, same results.

Last edited by TheGimp; 14th October 2012 at 10:38 PM.
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Old 15th October 2012, 05:33 AM   #6355
tvicol is offline tvicol  Romania
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Quote:
Originally Posted by TheGimp View Post
Thanks Tibi,

I'll see if I can get either at the local electronics shop tomorrow.

I installed two 500pf Silver Mica in parallel, same results.
Don´t forget to chk R1 and R17, these must be 27K.

Regards,
Tibi
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Old 15th October 2012, 09:51 PM   #6356
TheGimp is offline TheGimp  United States
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Well, now this is strange.

I re-soldered the ICs although I believe there was no issue with them. I also inspected every component for integrity of the solder joints and I am sure they are fine. This was done at a SMT solder station on proper equipment, not just with a magnifying glass.

I did change R1 and R17 to be sure they are correct.

Tried it again and same results.

Then I thought...... Maybe it does not like "RETURN TO FOREVER - THE MOTHER SHIP RETURNS".

So I tried "chick corea . return to forever"...

ba-da-bing! Digital data out.

I have not hooked up a D/A yet but will try it later tonight.

So it works, but is marginal and it is finicky about what CD it plays.

.....
Edit - I tried the offending CD in another player.
.....

I got the CD set a couple of weeks ago and listened to the first two CDs.

HA! The CD won't play in any of my CD players (3) so it is a bad CD I guess. I'll have to try a bunch of other CDs to be sure but it might be that the CD was my problem all along!

Last edited by TheGimp; 15th October 2012 at 10:12 PM.
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Old 15th October 2012, 11:21 PM   #6357
TheGimp is offline TheGimp  United States
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Got Audio!

Weeeeeeeeeeeeeeeeeeeeeeeeeee!
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Old 16th October 2012, 06:33 AM   #6358
tvicol is offline tvicol  Romania
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Quote:
Originally Posted by TheGimp View Post
Got Audio!

Weeeeeeeeeeeeeeeeeeeeeeeeeee!


Regards,
Tibi
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Old 16th October 2012, 06:40 AM   #6359
neoinc is offline neoinc  Singapore
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Waiting patiently for my mounted Shiga….
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Old 16th October 2012, 06:49 AM   #6360
tvicol is offline tvicol  Romania
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Quote:
Originally Posted by neoinc View Post
Waiting patiently for my mounted Shiga….
Appreciate very much your patience.
This week 3 ready mounted Shiga´s have been already shipped and another 8 are waiting to be packed and shipped.
Each delivery is announced by mail with a postal receipt copy.

Just a reminder, all Shiga documents are available at http://vicol-audio.ro/shiga.php

Regards,
Tibi
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