Philips CD104 tweaks - Page 61 - diyAudio
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Old 21st January 2009, 05:37 PM   #601
tubee is offline tubee  Netherlands
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Yes the grey cables can be horrible often
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Old 23rd January 2009, 06:36 PM   #602
mole42 is offline mole42  United Kingdom
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Default Re: Re: Tray Motor board transistors?

Quote:
Originally posted by Onnosr



Hi Mole42

2SC32840 (= BC328-40)

any TO92 (or SOT 54a) PNP silicium tor will do the job provided
the max current > 750 ma (or 1A) and V ceo > 45 volts

2SC33840 --> NPN etc. (= BC338-40)

(check EBC connections on tor)

SL 1 triggers the tray out
SL 2 triggers the tray in

BTW did you check all the (gray) cables to the connectors.
They "look" most of the times OK but in fact the are just broken.

Regards.

Onno
Thanks!
Just the ticket. I had already checked the grey cables (I've serviced Philips gear before!) but I knew the motor driver transistor(s) had failed... Hope to get the beast fixed this weekend.

Richard
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Old 2nd February 2009, 09:26 PM   #603
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YES

I just managed to get such a nice player, but Im still looking for a service manual. Would anyone be so kind to send it to me?

Tomorrow I will fight myself through this topic and look what I can improve to my just gained beauty.

Regards,
Mischa
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Old 2nd February 2009, 09:57 PM   #604
tubee is offline tubee  Netherlands
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Grats

First check through board gnd connections
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Old 2nd February 2009, 09:57 PM   #605
Onnosr is offline Onnosr  Netherlands
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Quote:
Originally posted by mischa72
YES

I just managed to get such a nice player, but Im still looking for a service manual. Would anyone be so kind to send it to me?

Tomorrow I will fight myself through this topic and look what I can improve to my just gained beauty.

Regards,
Mischa

Send your email address.

Onno
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Old 3rd February 2009, 03:34 AM   #606
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Email sent !

Thank you very much

Best regards,
Mischa
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Old 28th February 2009, 06:16 AM   #607
mole42 is offline mole42  United Kingdom
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Default NE5532 replacement and sticky tray

Thanks for the information about driver transistors, I replaced those and got the tray to slide in and out on command. It does have the usual problem getting fully in though, I've seen mention of replacing the drive belt, but it does seem very stiff to push the last few millimetres in. Is there a particular point to lubricate before I change the belt?

Also, I changed the NE5532 op-amps in the output for Burr-Brown OPA627 pairs. What a difference that makes. The sound really does jump out at you!

Richard
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Old 28th February 2009, 11:17 AM   #608
jives11 is offline jives11  Europe
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Default Re: NE5532 replacement and sticky tray

Quote:
Originally posted by mole42


Also, I changed the NE5532 op-amps in the output for Burr-Brown OPA627 pairs. What a difference that makes. The sound really does jump out at you!

Richard
Hmmm, sounds like a reason to keep the 5532. I'd be interested in your listening experiences over time. I have often found other opamps to initially sound better but to have rather fatiguing aspects over time. I'd be delighted if you have found an improvement, I know the slew rate on the 5532 is nothing to write home about, which is important in IV conversion
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Old 28th February 2009, 05:01 PM   #609
mole42 is offline mole42  United Kingdom
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Default Re: Re: NE5532 replacement and sticky tray

Quote:
Originally posted by jives11


Hmmm, sounds like a reason to keep the 5532. I'd be interested in your listening experiences over time. I have often found other opamps to initially sound better but to have rather fatiguing aspects over time. I'd be delighted if you have found an improvement, I know the slew rate on the 5532 is nothing to write home about, which is important in IV conversion

I maybe didn't say it like I find it! I've listened to CDs now for a couple of weeks with the new op-amps and I'd say that the difference is noticeable. Mainly there's better definition to the bass, the sound stage seems more defined and things like piano solo works sound more real, more as though the piano was in the room. My listening preference varies between Bach, blues and big band swing. Maybe because I'm a musician I have more particular requirements from my audio equipment?

Richard
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Old 19th April 2009, 12:40 PM   #610
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I'm looking for the full service manual to troubleshoot my CD104, which has blown the fuse. Would appreciate it if someone could kindly email it to me at mcheong66@gmail.com

BTW, the fuse used in the CD104 is rather uncommon (inside the transformer housing), does anyone know where to get it?

Thanks for all your help!
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