Grundig CD7550 schematics

jives11 · 25th February 2006, 08:53 AM

Anyone know where I can get a copy of these schematics. I'm intrigued as to what Grundig changed as this is basically similar to the Philips CD304 mk I , I *think* but Grundig changed the grounding arragements and the output filter.

Thanks

poynton · 25th February 2006, 09:23 PM

Quote:

Originally posted by jives11
Anyone know where I can get a copy of these schematics. I'm intrigued as to what Grundig changed as this is basically similar to the Philips CD304 mk I , I *think* but Grundig changed the grounding arragements and the output filter.

Thanks

HI. I think you can get these ( at a price ) from CAS in Germany

Andy

jives11 · 26th February 2006, 08:14 AM

Quote:

Originally posted by poynton

HI. I think you can get these ( at a price ) from CAS in Germany

Andy

CAS ?

You can see the innards of a CD7550 here :

http://www.dcaudio.kgb.pl/grundig7550.htm

AFAICT it looks like a CD104. The chip next to the 7020 is NEC, and there is a red plastic cap, near the trimmer at the bottom os this picture:

http://www.dcaudio.kgb.pl/75502.jpg

poynton · 26th February 2006, 11:16 AM

Quote:

Originally posted by jives11

CAS ?

Classic Audio Service from Germany.

Look on Ebay for vendor ch5oh

It does look like a CD104!

Andy

jives11 · 1st March 2006, 06:04 AM

rather interestingly somone is selling the electronics from a CD7550 on ebay:

http://cgi.ebay.co.uk/Grundig-CD-755...QQcmdZViewItem

While too small for exact component identification, thses look exactly the same as the CD104 boards.

Gentlemen of the dury, i put it to you that the CD7550 is , infact a CD104 with no identifiable changes.

poynton · 1st March 2006, 12:51 PM

Quote:

Originally posted by jives11
rather interestingly somone is selling the electronics from a CD7550 on ebay:

http://cgi.ebay.co.uk/Grundig-CD-755...QQcmdZViewItem

While too small for exact component identification, thses look exactly the same as the CD104 boards.

Gentlemen of the dury, i put it to you that the CD7550 is , infact a CD104 with no identifiable changes.

If you look on Eebay, you will see that the same guy is also selling the same boards for Philips CD104 and CD304 !

carlos mangus · 19th November 2007, 02:22 PM

Has anyone modified this model of Grundig player?

jives11 · 19th November 2007, 02:52 PM

Quote:

Originally posted by carlos mangus
Has anyone modified this model of Grundig player?

I have not seen anything , but they are almost identical to the CD104 Philips player internally. Check out the thread on modifying the 104

Philips CD104 tweaks

poynton · 19th November 2007, 05:25 PM

The Grundig Cd7550 is a rebadged Philips CD304 mk1

See :- http://cgi.ebay.co.uk/Grundig-CD-755...QQcmdZViewItem

I have uploaded the schematics to here :-

http://www.yourfilelink.com/get.php?fid=430920

(Unless downloaded, they will disappear in 30 days.)

Andy

jives11 · 19th November 2007, 06:54 PM

Quote:

Originally posted by poynton
The Grundig Cd7550 is a rebadged Philips CD304 mk1

See :- http://cgi.ebay.co.uk/Grundig-CD-755...QQcmdZViewItem

I have uploaded the schematics to here :-

http://www.yourfilelink.com/get.php?fid=430920

(Unless downloaded, they will disappear in 30 days.)

Andy

both boards look like a 104 but that could be the same as a 304Mk 1 ?

http://www.dcaudio.kgb.pl/grundig7550.htm

25th February 2006, 08:53 AM	#1
jives11 diyAudio Member Join Date: Mar 2004 Location: Hampshire	Grundig CD7550 schematics Anyone know where I can get a copy of these schematics. I'm intrigued as to what Grundig changed as this is basically similar to the Philips CD304 mk I , I think but Grundig changed the grounding arragements and the output filter. Thanks

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1st March 2006, 06:04 AM	#5
jives11 diyAudio Member Join Date: Mar 2004 Location: Hampshire	rather interestingly somone is selling the electronics from a CD7550 on ebay: http://cgi.ebay.co.uk/Grundig-CD-755...QQcmdZViewItem While too small for exact component identification, thses look exactly the same as the CD104 boards. Gentlemen of the dury, i put it to you that the CD7550 is , infact a CD104 with no identifiable changes.

19th November 2007, 02:22 PM	#7
carlos mangus diyAudio Member Join Date: Nov 2007	Has anyone modified this model of Grundig player?

19th November 2007, 05:25 PM	#9
poynton Magneto the Gravity Man diyAudio Member Join Date: Mar 2005 Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)	The Grundig Cd7550 is a rebadged Philips CD304 mk1 See :- http://cgi.ebay.co.uk/Grundig-CD-755...QQcmdZViewItem I have uploaded the schematics to here :- http://www.yourfilelink.com/get.php?fid=430920 (Unless downloaded, they will disappear in 30 days.) Andy

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