Marantz CD63 & CD67 mods list

[SimontY]

Update on my CD63: New clock power supplies installed inside player, including small toroid. Black Gates for motor driver chip decoupling.

These upgrades are being done with, erm, professional help. I keep blowing my machine up so I'm not doing anything more to it!

I'll report on the sound on Monday or Tuesday when I have it back.

Simon

[SimontY]

I'm enjoying my backup machine, which is a Philips CD650 I bought via Ebay for about £10. It has a TDA1541 DAC and is easily better than a CD63KI, both stock (less detailed perhaps, but more realistic and chunky in texture). Perhaps I can learn to not blow things up using this machine.

Simon

[RCruz]

Originally posted by SimontY
Hi Ricardo,

You could be the first to power the decoder with THREE regulators, how about that?

Hi Simon

I must learn a lot before I do that.

I am finding that there is a big difference between the PCB layout and the schematic.

For instance, near the decoder, there are 4 components non existent in the PCB: C522; C523; R521; U193 (Should be a link but seems like a resistor).

These components are related with the clock signal and all are placed around C513 (The one that produces screeching sounds)

I must figure out all the implications before I start modding again....

The sound is awesome as is and I must be very sure to be able to work without compromising everything.

Who is the "professional" working in your machine ?

Ricardo

[RCruz]

Originally posted by SimontY
I'm enjoying my backup machine, which is a Philips CD650 I bought via Ebay for about £10. It has a TDA1541 DAC and is easily better than a CD63KI, both stock (less detailed perhaps, but more realistic and chunky in texture). Perhaps I can learn to not blow things up using this machine.

TDA1541 is quite good.... I have one in my SteinMusic CDP.

Loads of bass and able to recreate a realistic sound picture.

But My CD53 now belongs to another league

[SimontY]

Originally posted by RCruz
Who is the "professional" working in your machine ?

Take one guess Ricardo

[RCruz]

Originally posted by Thomo
LOL. Where did you find that? That was one of my first attempts at a cd63.

edit: Don't follow that list too closely. I was still quite a noob when I did it, everything may not be correct.

Hi Lee

Did you or did you not power the three +5v inputs in the decoder with three independent sregs ?

Ricardo

[hotiron]

Originally posted by SimontY
Hi Ricardo,

You could be the first to power the decoder with THREE regulators, how about that?

Simon

Hi Guys My new stock of regs arrived this morning decoder now has three regs stuffed in C510 C511 C153 220 u on reg board .1u underneath on old pads
Servo now has two regs also C120 C122 Will update on sound once its had a good thrashing over weekend

PS Simon CD650 was first CD Great Machine! New thread coming on perhaps!!!

[RCruz]

Originally posted by hotiron


Hi Guys My new stock of regs arrived this morning decoder now has three regs stuffed in C510 C511 C153 220 u on reg board .1u underneath on old pads

Can you please explain a little more ?

1st reg on C510 - Pin 11
2nd reg on C511 - Pin 15
3rd reg where ?

C153 = C513 ?

I really apreciate your comment

Regards

Ricardo

[hotiron]

Sorry Ricardo, major typos Reg in C513 remove U179 replace C513 on solder side of board.

CD650 was MY first player OOPS!

[Luke]

You could be the first to power the decoder with THREE regulators, how about that?

Ken Ishiwita would be so proud