Marantz CD5400 clock replacement - Page 3

EC8010 · 20th February 2006, 07:14 PM

Yes. I have one of Guido Tent's clocks - it just needs to be popped onto a PCB with a regulator.

4real · 20th February 2006, 07:17 PM

Wow, exciting

I hope you let us know if it works? Any idea on when you are going to test it?

EC8010 · 20th February 2006, 07:21 PM

I thought tomorrow might be nice. Doubtless, I will find that designing and making the PCB will take longer than expected. But now that I have CD5400 spread all over the bench, it needs something doing with it rather than just tamely putting it all back together again without doing anything. Assuming that the mod is successful, I'll post full details.

4real · 20th February 2006, 07:33 PM

You've got a nice vibe

going! Somtimes you'll just need to break things to get yourself to actually do something

Besides the clock, I guess the DAC upgrade will also make one of the bigger differences, I'm still not exactly sure how to do that though.

EC8010 · 21st February 2006, 06:04 PM

The PCB has been made, stuffed, and tested. Time for a break, then start looking at cutting tracks etc on the CD5400.

4real · 21st February 2006, 06:33 PM

Nice job

Heph · 21st February 2006, 07:36 PM

Nice

Can't wait to read your review.... I will do the same thing to mine anytime soon...

EC8010 · 21st February 2006, 08:06 PM

I'm nearly there, and haven't had to cut any tracks, so it can all be put back if necessary. It's the deliberate errors in the manual that cause the trouble. For example, R619 doesn't exist and has been replaced by J114.

4real · 21st February 2006, 08:17 PM

true, and R618 is just cut out, that would mean no MCLK..

edit: actually, at the underside, a lot more had been chaned. They added two 100uF caps, one of them with a series reistor between earth and and R610.

and the IC output of R618 is connected to R609, so that is effectively the same as bypassing R618.

You could simple cut the lines near the DAC and the servo, and connect the new clock directly to it I guess..

EC8010 · 21st February 2006, 09:31 PM

It works.

I'll take a photograph of the innards and write up how to do it tomorrow. Right now, I'm off to have a beer and listen to some Bach.

20th February 2006, 07:14 PM	#21
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	Yes. I have one of Guido Tent's clocks - it just needs to be popped onto a PCB with a regulator. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

20th February 2006, 07:21 PM	#23
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	I thought tomorrow might be nice. Doubtless, I will find that designing and making the PCB will take longer than expected. But now that I have CD5400 spread all over the bench, it needs something doing with it rather than just tamely putting it all back together again without doing anything. Assuming that the mod is successful, I'll post full details. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

21st February 2006, 06:04 PM	#25
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	The PCB has been made, stuffed, and tested. Time for a break, then start looking at cutting tracks etc on the CD5400. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

21st February 2006, 08:06 PM	#28
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	I'm nearly there, and haven't had to cut any tracks, so it can all be put back if necessary. It's the deliberate errors in the manual that cause the trouble. For example, R619 doesn't exist and has been replaced by J114. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

21st February 2006, 09:31 PM	#30
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	It works. I'll take a photograph of the innards and write up how to do it tomorrow. Right now, I'm off to have a beer and listen to some Bach. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...


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20th February 2006, 07:17 PM	#22
4real diyAudio Member Join Date: May 2004 Location: Arnhem	Wow, exciting I hope you let us know if it works? Any idea on when you are going to test it?

20th February 2006, 07:33 PM	#24
4real diyAudio Member Join Date: May 2004 Location: Arnhem	You've got a nice vibe going! Somtimes you'll just need to break things to get yourself to actually do something Besides the clock, I guess the DAC upgrade will also make one of the bigger differences, I'm still not exactly sure how to do that though.

21st February 2006, 06:33 PM	#26
4real diyAudio Member Join Date: May 2004 Location: Arnhem	Nice job

21st February 2006, 07:36 PM	#27
Heph diyAudio Member Join Date: Mar 2005 Location: Mulhouse	Nice Can't wait to read your review.... I will do the same thing to mine anytime soon...

21st February 2006, 08:17 PM	#29
4real diyAudio Member Join Date: May 2004 Location: Arnhem	true, and R618 is just cut out, that would mean no MCLK.. edit: actually, at the underside, a lot more had been chaned. They added two 100uF caps, one of them with a series reistor between earth and and R610. and the IC output of R618 is connected to R609, so that is effectively the same as bypassing R618. You could simple cut the lines near the DAC and the servo, and connect the new clock directly to it I guess..

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