Marantz CD-50 and CD-60, TDA1541, CDM4/19 - Page 14

UV101 · 12:33 AM

Not a CD50 or a CD60 but one in the middle! CD65SE!
Just finished modding this for a pal. Lots of similar chips and all the same principles apply!

Too much done to list but there are 10 regs, a clock and complete re-cap to start ;-)

You can see why I keep to small regs and dont use any of the larger type. It would be impossible to get this many larger regs in!

Started like this before the weekend!!!!

A bit of investigation and the service manual resulted in a plan!!!

Just running in at the mo

AndrewGM · 8th December 2011, 12:48 AM

.....and it sounds.... amazing ?
Double Crown..all those regs, three traff's, large lytics, re cap, clock etc etc ?
Lottery winner ?
What a lucky man he is.....blimey

Mayday · 8th December 2011, 08:12 AM

That's looking really nice UV101 !!
I bet it'll sound even nicer then it looks

How much £ do you think you spent?

Mayday · 8th December 2011, 09:09 AM

I'm starting to zero in on the TPR w 2 LED's in series on R4.
Was told this would give 5,25Vdc very low noise, 5,25v close enough to work(SAA7220 & clock, one for each)? If not, how do I lower V to 5,0V without adding noise? Specs for the LED's to be used should be?

quan · 8th December 2011, 10:02 AM

Nice work UV101, i 've got my Cd40 to be mod. Plenty of ideas .Thank you.

Mayday · 10:39 AM

Got these today, how do they compare to ZLH(which I will get anyway, thanks to UV101):

Also, can I parallell the 470 ZLH under the PCB or should I remove the originals(2704,2714,2708,2712)?

Mayday · 8th December 2011, 12:05 PM

Tried to make a descent regulatorboard in eagle, don't mean to steal anything, the test on the board is only because I'll just have them made for me.

Any thoughts?

Mayday · 9th December 2011, 06:48 PM

Got these 4,7uF/400V MKP today

Mayday · 9th December 2011, 06:56 PM

I'm trying to learn to use eagle, so I made a design from a schematic earlier posted in this topic.

J1 and J1 are to be connected by wire(making it a one-sided PCB)

.

Mayday · 09:32 PM

I think I've asked but not sure I got an answer;
What kind of LED:s is best to use in this application?
Found rather cheap EI transformers 10VA 1x9Vdc(1200mA). 3 of these would easily fit when I remove the pcb for variable output. One for each of these: saa7220, 7310 and later a clock.

8th December 2011, 12:30 AM	#131
UV101 diyAudio Member Join Date: Dec 2008 Location: Oxford	Not a CD50 or a CD60 but one in the middle! CD65SE! Just finished modding this for a pal. Lots of similar chips and all the same principles apply! Too much done to list but there are 10 regs, a clock and complete re-cap to start ;-) You can see why I keep to small regs and dont use any of the larger type. It would be impossible to get this many larger regs in! Started like this before the weekend!!!! A bit of investigation and the service manual resulted in a plan!!! Just running in at the mo __________________ When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk GValve Pre, GFA-5500 Class A power, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard" Last edited by UV101; 8th December 2011 at 12:33 AM.

8th December 2011, 08:12 AM	#133
Mayday Project and parts horder diyAudio Member Join Date: Mar 2004 Location: Sweden	That's looking really nice UV101 !! I bet it'll sound even nicer then it looks How much £ do you think you spent? __________________ The more you learn, the more you realize how little you know... My blog, go have a look

8th December 2011, 09:09 AM	#134
Mayday Project and parts horder diyAudio Member Join Date: Mar 2004 Location: Sweden	I'm starting to zero in on the TPR w 2 LED's in series on R4. Was told this would give 5,25Vdc very low noise, 5,25v close enough to work(SAA7220 & clock, one for each)? If not, how do I lower V to 5,0V without adding noise? Specs for the LED's to be used should be? __________________ The more you learn, the more you realize how little you know... My blog, go have a look

8th December 2011, 10:37 AM	#136
Mayday Project and parts horder diyAudio Member Join Date: Mar 2004 Location: Sweden	Got these today, how do they compare to ZLH(which I will get anyway, thanks to UV101): Also, can I parallell the 470 ZLH under the PCB or should I remove the originals(2704,2714,2708,2712)? __________________ The more you learn, the more you realize how little you know... My blog, go have a look Last edited by Mayday; 8th December 2011 at 10:39 AM.

8th December 2011, 12:05 PM	#137
Mayday Project and parts horder diyAudio Member Join Date: Mar 2004 Location: Sweden	Tried to make a descent regulatorboard in eagle, don't mean to steal anything, the test on the board is only because I'll just have them made for me. Any thoughts? __________________ The more you learn, the more you realize how little you know... My blog, go have a look


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8th December 2011, 12:48 AM	#132
AndrewGM diyAudio Member Join Date: Jun 2008	.....and it sounds.... amazing ? Double Crown..all those regs, three traff's, large lytics, re cap, clock etc etc ? Lottery winner ? What a lucky man he is.....blimey

8th December 2011, 10:02 AM	#135
quan diyAudio Member Join Date: Feb 2007 Location: sydney	Nice work UV101, i 've got my Cd40 to be mod. Plenty of ideas .Thank you.

9th December 2011, 06:48 PM	#138
Mayday Project and parts horder diyAudio Member Join Date: Mar 2004 Location: Sweden	Got these 4,7uF/400V MKP today __________________ The more you learn, the more you realize how little you know... My blog, go have a look

9th December 2011, 06:56 PM	#139
Mayday Project and parts horder diyAudio Member Join Date: Mar 2004 Location: Sweden	I'm trying to learn to use eagle, so I made a design from a schematic earlier posted in this topic. J1 and J1 are to be connected by wire(making it a one-sided PCB) . __________________ The more you learn, the more you realize how little you know... My blog, go have a look

9th December 2011, 09:22 PM	#140
Mayday Project and parts horder diyAudio Member Join Date: Mar 2004 Location: Sweden	I think I've asked but not sure I got an answer; What kind of LED:s is best to use in this application? Found rather cheap EI transformers 10VA 1x9Vdc(1200mA). 3 of these would easily fit when I remove the pcb for variable output. One for each of these: saa7220, 7310 and later a clock. __________________ The more you learn, the more you realize how little you know... My blog, go have a look Last edited by Mayday; 9th December 2011 at 09:32 PM.

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