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Marantz CD-50 and CD-60, TDA1541, CDM4/19
Marantz CD-50 and CD-60, TDA1541, CDM4/19
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Old 8th December 2011, 12:30 AM   #131
UV101 is offline UV101  England
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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!

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Started like this before the weekend!!!!

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

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Just running in at the mo
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Last edited by UV101; 8th December 2011 at 12:33 AM.
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Old 8th December 2011, 12:48 AM   #132
AndrewGM is offline AndrewGM  United Kingdom
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.....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
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Old 8th December 2011, 08:12 AM   #133
Mayday is online now Mayday  Sweden
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Marantz CD-50 and CD-60, TDA1541, CDM4/19
That's looking really nice UV101 !!
I bet it'll sound even nicer then it looks
How much £ do you think you spent?
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Old 8th December 2011, 09:09 AM   #134
Mayday is online now Mayday  Sweden
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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?
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Old 8th December 2011, 10:02 AM   #135
quan is offline quan  Australia
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Nice work UV101, i 've got my Cd40 to be mod. Plenty of ideas .Thank you.
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Old 8th December 2011, 10:37 AM   #136
Mayday is online now Mayday  Sweden
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Got these today, how do they compare to ZLH(which I will get anyway, thanks to UV101):

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Also, can I parallell the 470 ZLH under the PCB or should I remove the originals(2704,2714,2708,2712)?
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Old 8th December 2011, 12:05 PM   #137
Mayday is online now Mayday  Sweden
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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?

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Old 9th December 2011, 06:48 PM   #138
Mayday is online now Mayday  Sweden
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Got these 4,7uF/400V MKP today

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Old 9th December 2011, 06:56 PM   #139
Mayday is online now Mayday  Sweden
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I'm trying to learn to use eagle, so I made a design from a schematic earlier posted in this topic.
Click the image to open in full size.

J1 and J1 are to be connected by wire(making it a one-sided PCB)
Click the image to open in full size..
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Old 9th December 2011, 09:22 PM   #140
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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.
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Last edited by Mayday; 9th December 2011 at 09:32 PM.
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