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Cambridge Audio CD6 display light gone
Cambridge Audio CD6 display light gone
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Old 15th November 2009, 02:15 PM   #11
JohnW is online now JohnW  Czech Republic
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Location: Discovery Bay, Prague, Paris...
Hi Andrea,

As far as I'm aware, the CD300SE is not one of my designs (Its possible that CA renamed one of my earlier designs). I will dig up some bulbs and send the once I return to Europe during Xmas. Pls. send a private Mail with your address.

I would not be supprised if you found 5532 below the Metal tins - again, this is not my design.

Time is my worst enemy!
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Old 16th November 2009, 09:51 AM   #12
stevenew is offline stevenew
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Really kind of you to reply, I will send you a PM with my details. Can you explain why the display light on my CD6 dimmed completely then after 2 days returned full and (touch wood) been fine since?

Yes IMHO the CD6 is a superb sounding machine, I am vinyl fanatic and the only CD players I had heard which came close were way out of my price range. Then someone suggest the CD6, I got the chance of a used one very very cheap and bought it - I was stunned, so musical and involving, I have been rediscovering my CD collection - actually I have even been buying CDs again!

Many thanks

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Old 8th September 2010, 08:52 AM   #13
Joost N is offline Joost N
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Default CD-mechanism question

Hello, I recently obtained a CD6 which sounds very nice!
I do have a question to be prepared for the future...
Can you provide me with some information on the CD-mechanism used in the CD6? I already found on the internet that a Sanyo SF-91 is used but there seem to be two versions of this mechanism (pins?). Can you help me please?
Many thanks in advance.
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Old 15th September 2010, 11:23 AM   #14
tiefbassuebertr is offline tiefbassuebertr  Germany
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Location: D-55629 Schwarzerden
Originally Posted by JohnW View Post
Hi Steve,

The CD6 is is one of my old designs - glad you like it. The display "Backlight bulbs" (I seem to recall 3 where used), are located on the front panel PCB. Over the years, the filments (Wire) in the builbs fail - just as with older house lamps. Moving the unit while the bulbs are still hot - can fracture the wire (it gets brittle over the years). You normally find the units work great untill they are moved, then the lamps fail...

Easy job to replace, but you need to be able to solder (and desolder), and require replacement bulbs - I might still have some - but they will be in China - I can send when I return to Europe for Xmas. Sorry I cannot remember the Spec. of the bulbs...

I have try to find the exactly type and part No in the part list of Service Manual of CD-6, CD-4 and DISCMAGIC without success. I have make the service for the German distributor by all Cambridge Audio products at that time and therefore I have the manuals. I must never replace the light source for the display and therefore I disass'y the front panel now for looking to the details.
Behind the display I find a white (semi-transparent) box. The lower site is closed with a PCB with the number "PC-1602-2" (also not mentioned in the Service Manual). The solder site (and PCB wires) of this PCB is inside unfortunately.
The measured voltage at the connector CN110 is 4V9. The positive rail of this connector is connected with regulator u2 (7805); not directly, but about a 5 ohm resistor (R9).
I assume, that are 6 V bulbs are in use. For replace this bulbs I would use high power LED's. Please note in this case the necessary of other resistor value for R9

P.S. the developing of this CD Player series was a great work for a very good sounded players (one of the best at that time in that price class), also still today. Unfortunately, the build quality was not satisfactory (typical China made), so I have had a lot of work in those days (1994-1998) through high quotes of returning during the warranty (mostly solder errors and bad quality/large spreads of the pulley (turntable) for the Mabuchi disc motor from a DA11 (Sanyo) China mechanism clone. Fortunately the optical pickup was a version with very high reliability (Sanyo SF-91). Only three faulty exemplares I must replace (from more than 1000 selled CD-Players) until this day. And the reason therefore I have also find out:
1) one unwanted solder connection in the APC circuit
2) two faulty devices with Sony Laser diode SLD104AU instead normally used RLD78 from Rohm

Last edited by tiefbassuebertr; 15th September 2010 at 11:33 AM.
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Old 20th March 2018, 12:30 PM   #15
jazzofthe50s is offline jazzofthe50s
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Join Date: Mar 2018
This is an old thread, I know, but perhaps any of you can help me anyway...

My problem with the display of the Cambridge Audio CD6 is that the figures fade away and become unreadable. There is still light, but after 5 min. the whole display becomes "foggy" and there are just bright light circles in place of the figures. Does this have an easy solution or will I need a new display?

If a new display is needed, does anybody know if CA CD5 and CD6 shared the same display? I have an old CD5 that I could use for parts if the display can be used for a CD6. Thank you!
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