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Old 20th August 2009, 04:49 PM   #12931
Glenn2 is offline Glenn2  United Kingdom
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I would say "don't bother"!

If you don't understand 100% what you are doing you will probably make it worse, not better. That is not meant to sound like a put down because I include myself in that category. I did not implement a star ground in my CD63 (any more that is already there anyway).

The DAC digital and clock grounds go to the digital star and the DAC analogue grounds go to the analogue star at the RCA jacks, and they are both tied to the ground plane on the top of the board which joins them. They are also joined by PCB traces too, and also in the transformer.

By isolating some of these grounds you'll potentially increase ground currents in others and make matters worse. That is why I say if you can't do it 100% correctly (and I didn't feel that I could) then don't do it at all.

You could argue that you need the KI version transformer to do it properly (or at least a separate analogue TX) as only then can you separate analogue and digital grounds in the transformer to have one star in the middle of the board.
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Old 20th August 2009, 05:16 PM   #12932
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Unhappy Have mercy!

Please gentlemen,

I'm near to jump out of my window so please have a look at your players, try to check the values or color code of:
C522
C521
C523
R521
U193 (R193),
I wanna put things back but have no clue of wich parts were there! (Like an idiot thrown them all in the bow of no more used parts...).

It focuses, sled OK, no spin. +/-10 ok, 5Vs ok...

AAAAHhhhhhhhhhhhhhhh
MAAAAaaaaaaaaaaaatthieu
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Old 20th August 2009, 09:13 PM   #12933
Glenn2 is offline Glenn2  United Kingdom
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Can't you look in the service manual? (link on Ray's site)

My player is fully assembled and sandwiched between amp and tuner. (A tuner sandwich?) Besides, they are too small and my eyes too bad to see the colours anyway.

Sorry to not be more helpful.
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Old 20th August 2009, 10:11 PM   #12934
Thomo is offline Thomo  United Kingdom
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I have an unmodded board here Matthieu, so I'll have a look in the morning for you.

Cheers, Lee.
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Old 20th August 2009, 10:12 PM   #12935
Thomo is offline Thomo  United Kingdom
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Is everyone getting the forum/thread update emails? 'Cos I aint.

Lee.
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Old 20th August 2009, 10:14 PM   #12936
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And unfortunately the answer is no Glenn, the FSM we all have here cover the early PCB. All that was just a 100R at that time, even the PCB is not the same.
Thanks to Ray who send me pics to help to find out.

Let's pray...

edit:
Lee, I don't have any notification either. In the profile there is an option that I've checked but with no success. Anyway the avatar picture was fixed a bit earlier, they may fix that soon too.
And many thanks for the pictures, they can confirm the ones of Ray.

Matthieu
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Last edited by Malefoda; 20th August 2009 at 10:18 PM.
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Old 21st August 2009, 01:53 PM   #12937
6h5c is offline 6h5c  Netherlands
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Quote:
Originally Posted by Thomo View Post
Is everyone getting the forum/thread update emails? 'Cos I aint.

Lee.
Nope, no e-mails here either...

Any luck with your player yet, M. ?

Ray
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Old 21st August 2009, 02:24 PM   #12938
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Thumbs up Yes we can!

Yes Ray!

Lee if you had no time to take pics it's fine it's fixed with Ray's pics.
The 10p at the DAC side, the 380R, the 39p, the pink cap and a 1MO resistor to ClOut of the Decoder. A coax between ceramic caps, the sheild at the decoder side.

So my attemp to feed a third (decoder) IC with the Flea was a failure.
The last update is the numerous LM317@5V, on dedicated PSU for DAC digital, each channel of DAC analog, Decoder digital, Decoder analog, from the player TX clock 5V ref., Servo 5V ref.
Beside the fact it's no longer simple 7805s I've fitted them with a 1F film wich "is required if regulator is located an appreciable distance from power Supply filter.". As I did not found the mark "appreciable" on my ruler...
The main gain now? Dynamic! It's fast and very invloving, let's regulate the drivers

Thanks Ray, Glenn & Lee

http://img18.imageshack.us/img18/4362/dsc00069nwv.jpg
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Last edited by Malefoda; 21st August 2009 at 02:29 PM.
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Old 21st August 2009, 03:42 PM   #12939
6h5c is offline 6h5c  Netherlands
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That's good news.

Those ty-raps are DOS-unworthy however

I just received a notification by the way
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Last edited by 6h5c; 21st August 2009 at 03:44 PM.
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Old 21st August 2009, 07:48 PM   #12940
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Hi can any body help i have had 5 voltage regs put on the servo and dac it worked great and a big improvement but then after a couple of days i went to use it and it wont read discs its makeing some clicking noises from the draw but the drive still spins any ideas
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