Marantz CD63 & CD67 mods list

[Fidelity Audio]

Just a shame it can't be split into chapters LOL

Brent

[6h5c]

That would be a hell of a job ....

[AndrewT]

Post 5000 I understand.
Page 500 is adjustable, mine shows 250.

[avr300]

Forum default -> and it says 501 pages here.

Great little reading.

[marcusdeming]

Hi guys,

I am attempting some small mod on my cd63 but without any background in electronics, some terms are somewhat difficult for me to understand.

I have downloaded the cd63 mods list and it would be gd if someone can show me a photo of what is meant:

"-Place varistor S20K250 directly on mains pins of IEC socket or on mains terminals on PCB.
- Insert common-mode filter (Farnell 353-2331). Remove U242/243/245/246 and insert filter instead.
-Place two class X or Y capacitors 4,7n/250Vac across mains before and after filter."

the farnell code seems to be obsolete, and it would be really gd if you guys have photos showing how these sections...

many thanks in advance.

Regards.

[6h5c]

Originally posted by marcusdeming
Hi guys,
...
"-Place varistor S20K250 directly on mains pins of IEC socket or on mains terminals on PCB.
- Insert common-mode filter (Farnell 353-2331). Remove U242/243/245/246 and insert filter instead.
-Place two class X or Y capacitors 4,7n/250Vac across mains before and after filter."

the farnell code seems to be obsolete, and it would be really gd if you guys have photos showing how these sections...

many thanks in advance.

Regards.

Hi Marcus,

The CD63 mods list is a bit older; if you look in the CD57 mods list (you can find it on my site) you'll find more up-to-date Farnell order numbers for these components.

Here are two photos of the mains section:

[6h5c]

And this one shows the caps:

Regards,

Ray.

[marcusdeming]

hi ray,

Thanks for the picture.

i do not quite understand the remarks column what does it mean?
is it soemthing thats required when we change the caps.

I have a cd63se and i am thinking of chnaging a couple of the caps first and slowly progressing to opamp change to the HDAM bypass.

Currently planning to change the power supply HDAM opamps ecaps.. can i just do a plaint swap, or is there anything to take note of. Will also be trying out the 2134 opamp, cos i have some spare, it should be ok right?

regards,
Marcus

[SimontY]

Originally posted by marcusdeming
Currently planning to change the power supply HDAM opamps ecaps.. can i just do a plaint swap, or is there anything to take note of. Will also be trying out the 2134 opamp, cos i have some spare, it should be ok right?

regards,
Marcus

Hi Marcus,

Just make sure the caps are the appropriate voltage rating and physical size (so they fit), and make sure you put them in the correct way round. The OPA2134 is a fine choice of op-amp, but solder in a socket, then plug the 2134 into that. That way you won't damage it with heat, plus you can try other op-amps (like LM4562).

Regards,
Simon

[marcusdeming]

Hi Simon,

I have soldered in the sockets, will be fitting in the opamps later to try it out. I did not select the 2134 just happened to have some leftovers from the my cmoy.

was looking at some nichicon gold, muse and cerafine. and also one that caught my eye was the panasonic x-audio..
Any recommendation for ecaps..?