ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Beosound 9000 MK III, Beosound Century, Beogram 5005, Beolab 8000, Beolab 5000, Beolab 4000, Beolab 5, Beovision 8, Beovision 10, Beovision 5, Beoplay A2, Beoplay E8, Beoplay H6.
Same thing happened to mine about 14 years. I had to replace the CD laser mechanism.
BeoLab 5, BeoVision 7-55 MK2, BeoSound 5 Encore, BeoSound 9000, BeoLab Penta III, BeoLab 8000, BeoLab 6000, BeoLab 2, BeoLab 7-6, BeoSound 8, BeoTime (analog clock), Beo 4 remote.
The line level input on BS9000 as with other B&O kit is rather insensitive when used with non B&O accessories.You'll need to crank up the output level of your Aux device.Does it have RCA(phono) and 3.5mm jack connections?Try another route?
The cd symptons are typical,but as the unit has been in store,the cd laser lens may be "foggy" and simply need cleaning.
Replacement lasers for the Mk1 are becoming scarce too.
Do you have a B&O techie nearby that could take a look at the unit for you?
Nick
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Present: BL90, Core, BL6000, CD7000, Beogram 7000, Essence Remote.
Past: BL1, BL2, BL8000, BS9000, BL5, BC2, BS5, BV5, BV4-50, Beosystem 3, BL3, DVD1, Beoremote 4, Moment.
So I have fixed the low volume problem. The radio and ipod through Aux works great. Now just the CD problem....
seethroughyou:Have you cleaned the laser lens with some cotton wool and isopropyl alcohol?
I did try cleaning the lens with a Q-tip and isopropyl alcohol, however I don't think it was very efficient due to the limited gap between the laser and the clamper...
Is there a way to gain easier access to the laser for cleaning?
Thanks to everyone for the help! I greatly appreciate it.
-Tucker
I have asked one of Beoworld senior members if you can clean laser using Test Mode 65. So far no answer. I actually disassemble clamper arm to do that
Peter: I have asked one of Beoworld senior members if you can clean laser using Test Mode 65. So far no answer. I actually disassemble clamper arm to do that
Peter, What is "Test Mode 65"?
I may attempt a disassembly of the the clamper to inspect and clean it more thoroughly. Do you have any tips?
Thanks!
Tucker, Benny Amina is up in Roswell west of Atlanta. I can look up his info if you need it, just PM or email me. For cleaning the laser I use a CD that has little brushes on it and automatically moves to the right place when you play it, might check Amazon for something similar.
Jeff
I'm afraid I'm recovering from the BeoVirus.
Test mode 65 probably moves laser to the outermost position so perhaps it can be cleaned without dismantling clamper arm. But I didn't tried it so far therefore I was asking if someone already tried that.
As to laser optics cleaning believe me I did a big reserch and generally laser in most cases is not "wearing up" but is rather dirty. Do not even think about using any special cleaning disk. Use something to clean ears and a liquid consisting of 70% distilled water and 30% isoprophyl alkohol + one small drop of washing detergent. Then wipe the optics with microfibre cloth and let it dry out to prevent moisture shortcutting focusing wires. Then try to play.
Does the sledge move to selected cd? No, check motor control.
Does it select the proper cd? Check motor inside sledge. which releases/takes cd. Maximum drawn current 0,030A. (free without torque)
Beobuddy: Does the sledge move to selected cd? No, check motor control. Does it select the proper cd? Check motor inside sledge. which releases/takes cd. Maximum drawn current 0,030A. (free without torque)
It moves to the selected disc perfectly, it just does not "grab" the disk. The CD just stays locked in the 2 black side clamps while it tries to play it.
Does anyone know of a thread about taking apart the clamper/sledge, or have any personal experience?
Tucker:Does anyone know of a thread about taking apart the clamper/sledge, or have any personal experience?
Regards Keith....
Keith, You ROCK! I am going to dig deeper into this in the next few days.
Thanks man!
There is a rather clever mechanism driven by a small motor,that raises the cd player assembly and releases the cd clamps.It seems that this motor is not functioning?
The dismantling of the cd clamper is logical but fiddly.You need to remove the glass door first,then dismantle the clamper.It's explained in the service manual on site,but it's not a job for the novice,alas.
If you have a B&O techie nearby,as suggested by the earlier poster,it might be easier to consult them?
I understand that the later mk111 mechanism can be employed,and that these are still available,but the clamper motor is not part of the kit.
Sorry to be a clamper damper,but hope you get it sorted,it's worth it
Regards,
I doubt you will find the complete lower board. You should rather try to take out the clamper motor and fix it or replace. It should't be especially designed for B&O but rather for general purposes.
The other idea is the root cause is not in the motor but in the clamping mechanism. Don't know how complicated it is but certainly something blocking it. Hope external thing ( piece of plastic, small part of cd disk, piece of dirt), If external a blowing or using vacuum cleaner would help. If internal failure ( gear wheels went out, or sometimes a spring which likes to jump out) try to find out what should happen when motor turns and what not allows to do that.
If you don't have any idea maybe it's possible to take out whole sledge and ask someone skilled in mechanics ( a watchmaker ?).
I never dealt with clamper, maybe someone on this forum did.
If you rotate the big gearwheel at the bottom, then you can check whether the mechanism works.
If the set goes into standby, then it could be that the clampermotor draws to much current.
The clampermotor is controlled and fed by the motorcontrolboard next to the powersupplyboard.
The smaller board in the sledge functions only as passthrough.
Don't want to bother you again. But please imagine that someone sent to you a complete sledge in a good condition. So you will have to take out the existing sledge to be replaced by new one. If so, you could do it now in order to examine it and at least be sure that the problem is in that sledge an not outside ( e.g. in motor control board or clamping "jaws")
hi
I know how hard it can be when you do not have more ideas in stock ot halp.Try to unplug the clamper motor and place a small bulb instead.If it lights up then you know that the clamper motor is in a malfunction.If it does not light up, it will be a fault in the connection or on the motor PCB .At least I think so.
Hi Beobuddy.
It sounds like you know this machine well. How would one check motor control? I have a Mk II with a slightly different problem. The clamper does close (eventually) and will play a CD but it will not change position manually or automatically.
TIA. :)
Does the sledge releases the cd, when you choose another cd?
When it releases the cd's try to change the position of the sledge by opeming the glasdoor first. That way the sledge should move slower.
When you release the sledge by turning the big gearwheel at the bottom, set the sledge at the sledge at the 6th positiion. Then turn on the power and look if the sledge moves slowly to the first positiion. (that's part of the startuproutine).
The motor inside the sledge which clamps and releases the cd/sledge, often fails. This complete mechanism become dirty with dried out grease which causes the motor to fail.
Hey Beobuddy
Hi Mike,
I've actually registered an account to help your case (hello to all the forum members!)
I had a similar case with one of my BS9000 - the magnet in the clamper (part 9119 in the repair manual for MKIII) was stuck together with the turntable. You are absolutely correct that there is no electromagnetic release, it's only about how high the clamper is over the turntable. The turntable is being moved up and down by the rocker arm (part 9134 in a repair manual), which as I understand you have bent a bit so it operates better. Have you entered test mode and tried no 71 after assembling everything back? Is it still not opening?
If not, then my bet is that your clamper is simply tilted towards the sledge and so the magnet is close enough to catch the turntable. The clamper (part 9116) has two adjustment screws hidden under the top plate (part 9114). Just remove the glass door, then the round cover (part 9113) and after opening the top plate you have two small hex key bolts that you can loosen to lift the clamper. Does it detach now? Can you run the full test mode 71?
If that's still not enough, then have a look on how is the clamper attached to the sledge. There are just two metal plates (parts 9115) screwed into the clamper and holding it in place. If you remove them, you can actually see that there is a pivot point next to each of them - all these metal plates are doing is to fix the clamper between the adjustment screws mentioned in the previous point and the pivot points. It is possible that the pivots are a bit worn, so you can potentially screw the plates tighter, bent them slightly or lift the pivot points by adding a small plastic washer or something similar.
Here a side note - the whole sledge, as the rest of the BS9000, is a wonderful mix of metal and plastic parts moving against each other. I very much doubt that the metal parts are really bending under this minor stress of the usage, but I can fully understand that the plastic pieces are wearing out from the friction. This gives an impression that the metal parts are bent, but in reality it's the plastic pieces that are responsible for catching some slack.
After trying these steps, please run the test modes, first no 27 to erase the saved errors, then 71 to see if the mechanism is working fine.
For me it was like a millionth problem I had with that BS9000 and it took me a while to sort everything out, but now works like a charm. And beautiful it is.