Marantz CD63 & CD67 mods list - Page 210 - diyAudio
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Old 27th April 2006, 11:30 AM   #2091
gy21 is offline gy21  Netherlands
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You can find the service manual for the cd63 here

http://members.chello.at/blomquist/CD63_Schema.pdf
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Old 27th April 2006, 11:40 AM   #2092
disco is offline disco  Netherlands
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Quote:
Originally posted by gy21
You can find the service manual for the cd63 here

http://members.chello.at/blomquist/CD63_Schema.pdf

For printing you might like these:

http://xs.to/xs.php?h=xs78&d=06174&f=CD63-schema_P1.gif
http://xs.to/xs.php?h=xs78&d=06174&f=CD63-schema_P2.gif
http://xs.to/xs.php?h=xs78&d=06174&f=CD63-schema_P3.gif
http://xs.to/xs.php?h=xs78&d=06174&f=CD63-schema_P4.gif
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Old 27th April 2006, 02:14 PM   #2093
adfinni is offline adfinni  United Kingdom
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Hey disco

Thanks for your email regarding my crazy cd motor. I can't get private messages here tho

I checked my player and i did pull ou u262 and 263 for the muting mod, but u161 was still in firmly in its place.
Unfortunately that player is dead, as every thime i change teh 2 fuses in the psu area, they blow again when i turn it on, so there is something quite wrong with it.

b.t.w. spoke to mark at audiocom and he said get it sent back for a replacement. SCORE !

But unfortunately my pcb took a pounding with the constant removal and checking of components, and a couple of traces where teh o-amp legs go in are coming up. Those will be left in place for the time being
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Old 27th April 2006, 02:14 PM   #2094
gy21 is offline gy21  Netherlands
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Ok, these are the mods i have done so far. From what i read from this thread these are "basically" the mods that show the biggest improvements.

My questions is now what mods are next for biggest improvements? I'm not planning to go all the way with modding my player, but just the mods wich show the biggest improvements.


* replaced opamps for ad826/ad8620/opa2134
* removed output dc blocking caps
* removed muting transistors
* Disabled headphone circuit
* Disabled HDAM
* supplied 8 x 100 nF decoupling caps around opamps and powersupply
* replaced clock with tentlabs clock
* Replaced mains inlet with iec inlet with emi filtering grounded at rca
* put 4n7 cap accros mains at jh03
* damped the cabinet and cdm12.1 with bitum material (7kg now)
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Old 27th April 2006, 02:28 PM   #2095
poynton is offline poynton  United Kingdom
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Quote:
Originally posted by adfinni


I checked my player and i did pull ou u262 and 263 for the muting mod, but u161 was still in firmly in its place.
Unfortunately that player is dead, as every thime i change teh 2 fuses in the psu area, they blow again when i turn it on, so there is something quite wrong with it.

Hi

You really need to go back to basics in trouble shooting the +-10 supply.

Isolate the supply by removing jumpersU161, U162 and also the +5v regulator.

If it still blows a fuse , replace the diodes and check the caps, C813, C814, for shorts.

If all appears ok, replace the +5v regulator.

Then it's a case of removing [one leg] the safety resistors on the servo chips , testing and replacing til it blows.

The CD6000 I showed on the thread some time ago had this symptom - one of the schottky diodes was ok on low volts [test meter] but very leaky on AC.

Andy
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Old 27th April 2006, 02:31 PM   #2096
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Quote:
Originally posted by gy21
Ok, these are the mods i have done so far. From what i read from this thread these are "basically" the mods that show the biggest improvements.

My questions is now what mods are next for biggest improvements? I'm not planning to go all the way with modding my player, but just the mods wich show the biggest improvements.


* replaced opamps for ad826/ad8620/opa2134
* removed output dc blocking caps
* removed muting transistors
* Disabled headphone circuit
* Disabled HDAM
* supplied 8 x 100 nF decoupling caps around opamps and powersupply
* replaced clock with tentlabs clock
* Replaced mains inlet with iec inlet with emi filtering grounded at rca
* put 4n7 cap accros mains at jh03
* damped the cabinet and cdm12.1 with bitum material (7kg now)
Off the top of my head these are the mods that helped the most.

Cheap easy and good mods first.

1) opamps
2) Bypass Hdam and output caps
3) Seperate regs for DAC and Decoder
4) Upgrade caps around DAC and Decoder to Pana FC or similar
5) coax
6) Damping of chassis
7) Decoupling around opamps etc
8) Muting removal
9) Removed caps from opamps to Headphone circuit

Cheap and a little more complex



Best mods price not so important.

1) Seperate regs on as many v lines as possible
2) Clock
3) good opamp
4) Bypass HDAM and output caps
5) seperate PSU for regs
6) Black gate caps
7) change caps on servo and opamps to silver mica types with good low tol resistors
8) A star earth
9) Coax
10) Damping

The list goes on but this is pretty much my top 10

Brent
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Old 27th April 2006, 02:33 PM   #2097
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Greetings from Turkey!

Wow!
I've been away on business for nearly a week and probably about 200 posts! Shocking. And Elso almost marring the reputation of this thread as the friendliest I know.
It did cross my mind once to change the regulation for my Kwak clock, but I'll have to do it in secret now

Ray, so what is you favourite? Valve, Bipolar or Fet? Can you tell any difference between the two transistor styles? Are you going to spend the next stage of your output stage frenzy comparing different models of transistor/valve?

I hope to finally fix my radial issue when I return next week, and then I should finally get some time to get back into modding my beloved Marantz. Can't wait, its been weeks.

Also, going to get a 'spare' off of Ebay. I think its quite handy to do this, unless you're really careful.

Cheers,
Phil
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Old 27th April 2006, 02:38 PM   #2098
adfinni is offline adfinni  United Kingdom
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Cheers andy. Il look into trouble shooting once my exams are over.

p.s. looking over my posts, i still can't seem to type a post without spelling errors. lol
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Old 27th April 2006, 03:19 PM   #2099
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Quote:
Originally posted by adfinni
Cheers andy. Il look into trouble shooting once my exams are over.

p.s. looking over my posts, i still can't seem to type a post without spelling errors. lol
LMAO

Its the modding frenzy its got you hooked, you need to do a 'Philpoole' and go dry/straight for a week

p.s Phil as been in modding rehab.

LOL

Brent
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Old 27th April 2006, 03:23 PM   #2100
adfinni is offline adfinni  United Kingdom
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Quote:
Originally posted by rowemeister


LMAO

Its the modding frenzy its got you hooked, you need to do a 'Philpoole' and go dry/straight for a week

p.s Phil as been in modding rehab.

LOL

Brent
HAHA, theres no human part of me left.

I'm now just made of upgraded caps, a superclock 2 for my brain powered by a separate psu (heart), with a number of upgraded super-dooper-regs (arteries) to make sure all the parts get clean power.

Next thing on my list is bypassing a number of arteries with some coax cable.


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