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Old 13th January 2006, 10:11 AM   #11
chlo is offline chlo  United Kingdom
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Hi,

Many thank for your CDX manual. I am still having a problem with my CD104. The tray does not open!. I could not find the circuit diagram for it on the CDX manual. I think I have to look for CD104 manual.

Once again many thanks for your help.

Chlo.
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Old 13th January 2006, 10:51 AM   #12
jives11 is offline jives11  Europe
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Quote:
Originally posted by chlo
Hi,

Many thank for your CDX manual. I am still having a problem with my CD104. The tray does not open!. I could not find the circuit diagram for it on the CDX manual. I think I have to look for CD104 manual.

Once again many thanks for your help.

Chlo.

ahh that would be different as the CDX was a top loader and hand no drawer mechanism.

If you take the top off you can (carefully) manually open the drawer. If you load a CD does it play correctly ?

Is there any motor noise if you press eject ? If so it might be as simple as the rubber belt is broken. Mine is not broken but is a bit loose . It looks very fiddly to replace assuming you can find a substitute
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Old 13th January 2006, 07:09 PM   #13
Lourens is offline Lourens  Europe
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Quote:
Originally posted by chlo
I think I have to look for CD104 manual.
You've got mail...

cheers
Lourens
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Old 14th January 2006, 02:52 PM   #14
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perhaps better ground in cd 104 ..... (look at Grundig cd 7550)
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Old 14th January 2006, 02:52 PM   #15
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...and denoise HF (see cd7550)
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Old 14th January 2006, 10:02 PM   #16
jives11 is offline jives11  Europe
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Quote:
Originally posted by wojtek.l
...and denoise HF (see cd7550)

Thanks Wojtek.l,



do you know how the Grundig 7550 differs from a CD 104 ?

My next tweak will be to add some ferrite to the 3 * 47uH chokes on the decoder board . These help to keep noise from the 7010, 7020 chips appearing on the +5v supply
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Old 15th January 2006, 02:50 PM   #17
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generally cd104 is similar to cd7550 but cd7550 has extra special ground for kill HF intermodulation
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Old 15th January 2006, 03:56 PM   #18
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CD104 - CD304 have very special sounding DACs, any tweaks won't change much IMHO.
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Old 15th January 2006, 04:16 PM   #19
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I replaced a lot of caps, analog section and added special ground like cd 7550 ... and it isn`t bad indeed. In start it had hagridden sound!
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Old 15th January 2006, 07:19 PM   #20
poynton is offline poynton  United Kingdom
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Hi.

Don't forget to resolder ALL the through-board connections from the ground planes (with a wire from top to bottom) !

"" I am still having a problem with my CD104. The tray does not open!. """

These connections cause untold problems including such as above.

Andy
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