Playstation as CD-player - Page 54 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 3rd January 2006, 03:14 PM   #531
Dommi is offline Dommi  Germany
diyAudio Member
 
Join Date: Dec 2003
Location: Frankfurt
Hi Mick,
i looked on your HP and i think there is a failure. If you disconnect the conducting paths like you've done there is a connection between the red RCA and the little component which suums the signal to mono. It not helps to disolver the caps upside.
I think it's better to disconnect the line shown on the picture below because we don't know what this little think makes with the Signal

BR Dommi
Attached Images
File Type: jpg img_0580 klein.jpg (54.3 KB, 1093 views)
  Reply With Quote
Old 3rd January 2006, 04:11 PM   #532
Dommi is offline Dommi  Germany
diyAudio Member
 
Join Date: Dec 2003
Location: Frankfurt
Hi @ all,
i measured the distance from cd clamp to motor. You have to press with a finger to the cd clamp and than the distance is
1,0 mm. This i measured on a new laserunit. Now i have to measure my other Units
Dommi
  Reply With Quote
Old 3rd January 2006, 05:09 PM   #533
pieroh is offline pieroh  Germany
diyAudio Member
 
Join Date: Dec 2005
Location: Marburg
Quote:
Originally posted by Dommi
Hi @ all,
i measured the distance from cd clamp to motor. You have to press with a finger to the cd clamp and than the distance is
1,0 mm. This i measured on a new laserunit. Now i have to measure my other Units
Dommi

Hi Dommi,
this might be the solution for the problem!

I received a new laserunit with a scratching spindel and although I managed to raise it , it would not work properly.

If the distance between the CD and the Laser is different, erverbody will arrive at a different conclusion.

Anybody who tries to raise the spindel should be carefull not to break it. You can lift it with ease by inserting a narrow piece of metall, between the motor and the spindel and then gently pressing it backwards.

Peter
  Reply With Quote
Old 3rd January 2006, 06:56 PM   #534
Mick_F is offline Mick_F  Germany
diyAudio Member
 
Join Date: Jun 2005
Location: Cologne
Quote:
Originally posted by Dommi
Hi Mick,
i looked on your HP and i think there is a failure. If you disconnect the conducting paths like you've done there is a connection between the red RCA and the little component which suums the signal to mono. It not helps to disolver the caps upside.
I think it's better to disconnect the line shown on the picture below because we don't know what this little think makes with the Signal

BR Dommi
Dommi, I have taken account of that. Instead of scratching the trace on the bottom, I found it easier to remove the little cap on the top of the board (see pictures 4.3 and 4.4
on my site . If you remove that cap, the RCA is completely disconnected from the circuit.

Mick
__________________
No statement here.
  Reply With Quote
Old 3rd January 2006, 07:06 PM   #535
Mick_F is offline Mick_F  Germany
diyAudio Member
 
Join Date: Jun 2005
Location: Cologne
Dommi, isnt there something like a defined stop when you push the clamp onto the motor axis? I think there is, and then the geometrical distance between the CD and laser can be reproducibly fixed. We should find a set of alignment parameters for this distance.

It is just a guess, but judging from the findings of most of the users here (including myself) that the set 11.4mV / 1.7V / 1.8xV works very well, we may conclude that they all had their clamps in this defined position.

What do you think?

Mick
__________________
No statement here.
  Reply With Quote
Old 3rd January 2006, 08:49 PM   #536
Mick_F is offline Mick_F  Germany
diyAudio Member
 
Join Date: Jun 2005
Location: Cologne
My last answer, of course, refers to the post of Pieroh.......
Sorry

Mick
__________________
No statement here.
  Reply With Quote
Old 3rd January 2006, 09:16 PM   #537
diyAudio Member
 
carawu's Avatar
 
Join Date: Jul 2003
@Mick:
5502 sounds more like a cheap CD-playa in comparison to a 1002.
Your cap-mod is exactly what Iīve in mind. This way 5502 and 1002 have the same output stage and can be jugded in direct comparison.
Just one hint: Twist or drill the wires, this way theyīll work as a a shielded cable. MKS is no good in audio, YEMV.
BTW: A23 recommended the line-out too. Maybe itīs system-dependent, you might need the extra drive in your setup. The opamp is a silly low power one, better to omit it.

Good to hear, that the reset isnīt needed.

The subject of the clamp distance needs more attention. There isnīt something like a defined stop when you push the clamp.
Anybody with a service-manual out there?

Carsten
  Reply With Quote
Old 3rd January 2006, 10:22 PM   #538
back is offline back  Greece
diyAudio Member
 
Join Date: Nov 2005
Location: crete
Quote:
Originally posted by carawu
@Mick:
5502 sounds more like a cheap CD-playa in comparison to a 1002.

Carsten
you tested them after the modifications?
  Reply With Quote
Old 3rd January 2006, 10:39 PM   #539
diyAudio Member
 
carawu's Avatar
 
Join Date: Jul 2003
No, I tested them before modifications. I had to buy some caps to do the mods.

Carsten
  Reply With Quote
Old 4th January 2006, 06:09 AM   #540
jives11 is offline jives11  Europe
diyAudio Member
 
jives11's Avatar
 
Join Date: Mar 2004
Location: Hampshire
I noticed on the farnell website (www.farnell.com) that they have in stock surface mount 15uF /10v OSCON caps, plus a few other values
These might fit as replacements either side of the DAC, assuming anyone can solder SMT (rather than desolder )
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Playstation CD Player Beau Digital Source 2 19th March 2004 07:59 PM


New To Site? Need Help?

All times are GMT. The time now is 08:39 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright Đ1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2