[ummagumma]

Forgot to mention: the reason I reassembled it was I noticed switch #2 was jammed, and thought maybe it, or the loose connector P6 might have been the reason it wasn’t working. No such luck though.

[ummagumma]

Pulled it apart & checked the solenoid, both coils appear to have continuity, so I don’t think it burned up.

Also removed & tested diodes 3,4 as they are in the solenoid circuit. Both tested good.

Very impressed with how serviceable B&O makes their stuff. Clear labelling on the PCB’s, and hinged cases for access. I discovered the lid support wire at the back, which is convenient. I had been propping the lid up with a hook screwed into the wall earlier.

Connector P6 is the most awkward thing I have ever seen though. By the time I wriggled it off, I had to resolder all the connector points under the board since some of the pins came loose.

 

5500 turntable still won’t power up.

 

Am I posting this in the wrong section? Surprised no one has replied? Has nobody here repaired one of these before?

 

Thx

[ummagumma]

Thanks for documenting this, it’s useful information to have.

[ummagumma]

Ah, I missed which type of stylus it was, thanks good to know!

[ummagumma]

Is there anything other than a dead solonoid that will show symptoms like this?

The unit doesn’t even power on anymore. As I said, the fuse is ok.

I might check transistors 4, 5 as they are in the same circuit as the 2 relays/solonoid.

[ummagumma]

Captains log, stardate 2022:

 

There are notes in the 2nd half of the SM that explain orientation for installing some of the gears. Easy to miss, as you need to skip past all the other language versions of part 1. Usually manuals have each language’s contents organized together?

 

I pulled it all apart & installed the gears according to the manual, x2 checked with pics I took before disassembly.

 

Fuse is still good, so I suspect I need to rebuild the piston, using condor audio’s doc for reference.

[ummagumma]

I think I know what happened: because I lost the C clip for part 1634, it wasn’t pressed all the way down. A clue would have been I noticed the platter looked like it was rubbing on the top of 1634, before I powered it up.

 

So something down in the gears wasn’t right: when I powered it up and the motor hit that resistance, it might have killed the solonoid piston, which is why it won’t even power on now that I’ve seated 1634 properly. I can’t find the C clip either: I knew something was going to fly off despite being careful: this is such a fiddly POS to work on.

 

Unless I have the gears installed wrong & there is a switch stopping the circuit from starting. I saw reference to gear installation the 3rd time I looked thru the service manual. Will check it out tommorrow, I don’t feel like pulling this apart again tonight.

 

Hopefully this log is useful for someone else.

[ummagumma]

 

Powered it up, hit “turn” to get the platter spinning, it ran for a bit & then the arm moved across about halfway, the platter jolted to a stop & I can’t even get it to power on now. I wonder if the internal fuse tripped once it hit some resistance?

 

The arm slid freely, but now it’s difficult to move manually. If I pull the platter & mess with the drive gear that has the white plastic slider, the arm frees up again. But the TT will not power on.

[ummagumma]

I may have figured it out….pulled it all apart again, part 1608 appears to have popped off the shaft it’s supposed to sit on, when I removed 1609. But now the C-clip holding 1634 has flown across the room & may be gone for good!

[ummagumma]

Ok I managed to get part 1609 out. It is bent just like the other pics in that thread. Dis- and re-assembly was a pain in the ass. I have not powered it back on yet: the arm gets stuck halfway thru travel, when I slide it manually. In both directions. The gears seem to be stuck there, and I’m wary of breaking something. Does it matter how the gears are oriented, relative to each other? I did not see anything about that in the manual.

 

Thanks for any advice

[ummagumma]

Soundsmith in the USA make hi quality B&O replacement stylus

 

https://www.sound-smith.com/bo-cartridges

[ummagumma]

I have the service manual, but many sections are illegible due to shadows/focus problems from whoever scanned the doc. Pgs 2-5, 4-1,7-2, 10-1, 10-2, and the last page diagram of the CD7000

[ummagumma]

PS I have the service manual. Hoping things don’t go flying when I try taking apart the gears, as there are springs and wires with tension on the parts.

[ummagumma]

Thanks guys!

I will reference the schems. It’s 117v, North America version

I found some circuit board pics here, too:

http://lampizator.eu/LAMPIZATOR/REFERENCES/Bangandolufsen/Bang%20&%20Olufsen%20CD5500%20CD%20player.html

I see some caps and those 2 large things that look like solonoids?

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