Marantz CD63 & CD67 mods list - Page 553

SimontY · 31st January 2007, 09:14 AM

Also, do you want to use Black Gates before each regulator? You could just play it safe with 25v caps of a cheaper variety (Panasonic Fc etc.). If I've learnt one thing about value for money in upgrading this CD player it's to save the most expensive caps for local decoupling. This means the caps right next to the DAC, decoder, servo and op-amps.

Simon

poynton · 31st January 2007, 09:21 AM

Quote:

Originally posted by SimontY

.............. Simon?

Simon (lol)...............

Perhaps we should re-christen you 'montY' ??

Andy

poynton · 31st January 2007, 09:24 AM

Quote:

Originally posted by SimontY

Also, might it be wise to NOT take the voltage for the clock, op-amps and everything else from this one supply?

Perhaps the clock and op-amps should take their voltages from different places. I'd suggest a dedicated transformer is used to power the clock.

Agreed, it would provide better psu isolation with obvious results !

16v with 25v Pana FC caps ? - I could live with that suggestion.

Andy

Gooch · 31st January 2007, 12:44 PM

Quote:

Originally posted by poynton

Are we talking commercial disks or CD-R / CD-RW ??

It will play some commercial and some CD-R

imperfectcircle · 31st January 2007, 09:35 PM

Quote:

Originally posted by poynton

Can we have a name and a picture for these mystery caps ??

Andy

The caps are Samxon GC series

YoungSC · 1st February 2007, 06:56 AM

Thanks for the info guys.

I will go away and do some research. A couple of questions to get me started:

1) Does the supply to a separate transformer come from mains before the main transformer, or does it take a feed from one of the lower voltage windings?

2) I was thinking of running the 5V regs from this new board and the 12V regs from C803. Does this sound reasonable?

Thanks

Simon (from Oz)

YoungSC · 1st February 2007, 07:21 AM

3) Or having reviewed Simon (Monty's) comments, perhaps I should have the new board running 12V and C803 providing power to the 5V board.

SimontY · 1st February 2007, 08:52 AM

I'll modify my power supply diagram to show you what you might want to build.

SimontY · 1st February 2007, 09:37 AM

Does this help you???

I've tried to make it as clear, logical and "good" as possible.

Red wires are positive voltage, green ones are ground.

There's one transformer, two power supplies and 4 regulators. This gives you 3x5vdc and 1x12vdc.

poynton · 1st February 2007, 09:53 AM

Quote:

Originally posted by Gooch

It will play some commercial and some CD-R

If you have cleaned the lens and 'serviced' the mechanism, I would suspect that the laser is on the way out.

If you can, check by substitution. They are not that expensive for a new unit, anyway.

Andy

31st January 2007, 09:14 AM	#5521
SimontY diyAudio Member Join Date: May 2003 Location: Sheffield, North England	Also, do you want to use Black Gates before each regulator? You could just play it safe with 25v caps of a cheaper variety (Panasonic Fc etc.). If I've learnt one thing about value for money in upgrading this CD player it's to save the most expensive caps for local decoupling. This means the caps right next to the DAC, decoder, servo and op-amps. Simon __________________ Fave. threads: Marantz CD63 \| Philips CD650 \| my 3-way dipoles \| T-bass for dipoles \| EnABL treatment \| Arcam Alpha (CD)

1st February 2007, 08:52 AM	#5528
SimontY diyAudio Member Join Date: May 2003 Location: Sheffield, North England	I'll modify my power supply diagram to show you what you might want to build. __________________ Fave. threads: Marantz CD63 \| Philips CD650 \| my 3-way dipoles \| T-bass for dipoles \| EnABL treatment \| Arcam Alpha (CD)

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1st February 2007, 06:56 AM	#5526
YoungSC diyAudio Member Join Date: Aug 2006	Thanks for the info guys. I will go away and do some research. A couple of questions to get me started: 1) Does the supply to a separate transformer come from mains before the main transformer, or does it take a feed from one of the lower voltage windings? 2) I was thinking of running the 5V regs from this new board and the 12V regs from C803. Does this sound reasonable? Thanks Simon (from Oz)

1st February 2007, 07:21 AM	#5527
YoungSC diyAudio Member Join Date: Aug 2006	3) Or having reviewed Simon (Monty's) comments, perhaps I should have the new board running 12V and C803 providing power to the 5V board.