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Old 30th December 2007, 08:42 AM   #8741
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Still the same: ribbon badly plugged does it in mine...
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Old 30th December 2007, 09:14 AM   #8742
quan is offline quan  Australia
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Question 63 marantz mod

Hi, remeasured again DC off set now is 3.26V both channels!!!!!-must be short-circuit?or loose contact?The cd still spinning. Where should i start?
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Old 30th December 2007, 01:21 PM   #8743
Glenn2 is offline Glenn2  United Kingdom
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First check the voltages at the op-amp +/- supply pins.

Sounds like your -12V rail is a bit dodgy.... well that's where I'd start anyway.

Good luck!
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Old 30th December 2007, 01:32 PM   #8744
Glenn2 is offline Glenn2  United Kingdom
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Default Re: Super Regulator review

Quote:
Originally posted by Malefoda
Here is the pictures of the player at the moment.
Click the image to open in full size.
Matthieu
Very neat work Matthieu!

Your work has been slow and steady. Slow in a good sense - I think it's too easy to try too many things at once and not appreciate the individual contribution of each modification. I'm often guilty of doing that!
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Old 30th December 2007, 01:43 PM   #8745
Glenn2 is offline Glenn2  United Kingdom
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Quote:
Originally posted by SimontY
I have lots of noise too, and I'm not sure where it comes from, so I'll be eagerly following developments..

Simon
Hi Simon,

I had some hum problems that I cured by switching to shielded inductors. The right channel also had a little bit of high frequency noise which I think is because it's nearer to the Tent clock board.
It all went away using the new inductors (Toko 10RB) - might be worth thinking about. Your player is quite busy inside and unshielded inductors could be picking up anything.

That might not be your problem, but it may be worth a try.
They're only about a quid a pop (+ P&P) from jabdog.

Glenn
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Old 30th December 2007, 02:40 PM   #8746
SimontY is offline SimontY  United Kingdom
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Hi Glenn,

Thanks for the tip. I'll get some of those inductors and see if that helps. I know it's more than one problem in mine as it's got worse with some upgrades. A big investigation is needed, I'm just wary of breaking it again.

Simon
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Old 30th December 2007, 06:12 PM   #8747
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Default Re: Re: Super Regulator review

Quote:
Originally posted by Glenn2


Very neat work Matthieu!

Your work has been slow and steady. Slow in a good sense - I think it's too easy to try too many things at once and not appreciate the individual contribution of each modification. I'm often guilty of doing that!

What the?! I'm slow?
Thanks Glenn
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Old 30th December 2007, 06:18 PM   #8748
Glenn2 is offline Glenn2  United Kingdom
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OK, 'unhurried'?

You always seem to try one thing at a time.... which is what I should do but often don't.
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Old 30th December 2007, 06:30 PM   #8749
SimontY is offline SimontY  United Kingdom
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It's good - the impressiveness of his mods have slowly warmed up over time and now I'd say there's an exceptionally neatly modded player that should have very good sound quality.
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Old 30th December 2007, 07:31 PM   #8750
quan is offline quan  Australia
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Angry marantz63mod

Hi, i have check the 12volts supply around op-amp-both are good-getting 11.86 and -11.86V.
Is it a slow leakage as if it only happen after a minute or two of playing-the machine sound great but goes dead! Where to check next guys ? Thanks Quan.
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