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So as promised I am hijacking Beitie’s thread to described repair of my (Danish!) mother-in-law’s BC9500, collected yesterday. I merely fitted the CD transit screws, taped down the loose glass panels and placed it carefully in the boot of the car in the centre of an old cot mattress that I keep for just such purposes (unless more grandchildren arrive!)
The faults are a sticking CD door and loose top panels (I re-glued the lower panel approx 10 year’s ago and it is still secure). I removed the glass panels and centre panel, then opened the unit up and realised that the service position support arm is missing, hence had to prop the lid against a box to work on it! You can see the loose CD door string hanging down:
Close up:
I then removed the CD door to make access easier, and realised that the little plastic sliding clip is broken where one end of the CD door string should attach! I left the other end of the string in place so you can see how it should look.
So clearly this repair is a bit trickier than I anticipated!
Two immediate thoughts:
- I wish I had kept the donor (‘Christmas tree’) BC9000 that I got rid of a few years ago – I could have transferred parts across.
- Again several years ago, I remember purchasing (on eBay) a ‘BeoCenter 9500 door string replacement kit’, thinking that I would be sure to need it one day. I think it even included new plastic sliders. The problem is that it is in one of these boxes:
What the above photo doesn’t show is that there are now several more boxes on top and all around (not all B&O) plus a precariously balanced BL3500, BL2000 and a partially dismantled Beoplay V1-32 propped against the side. I can barely enter the room!
So I will try to muster the energy to delve into the boxes again – I really must label them in much more detail.
I am also waiting for ‘super glue gel’ to arrive to re-stick the upper glass panel, so I can’t even crack on with that task while I procrastinate about the boxes.
To be continued ……. timeframe uncertain! ?
So despite hurting my back yesterday mowing the lawn I have today commenced the great box search!
After four hours of careful extraction, unwrapping and disappointment, I have uncovered the very last box and saw this red writing on the top: (I was organised after all!)
And in a little box inside the box I found this:
Reverse view, just in case anyone else finds the part number useful!
I am so relieved – I was beginning to doubt myself and had even searched out the eBay confirmation email from when I bought it. (this confirmed that it cost me £4.10 exactly ten years ago!)
Anyway, I need to rebuild the box pile and then go out for a meal to celebrate the find. I will start the CD-door re-stringing exercise in the next few days and will let you know how it goes!
So I have spent quite a few hours getting the BC9500 up and running.
I first re-stuck the upper glass panel. I used the ‘gluing’ technique as this has worked well for me in the past. I cleaned up the panel and plastic surrounds, leaving the old 2-sided tape in-situ and merely brushing off the loose bits of perished tape. I then placed the glass panel face down on a totally flat surface. I fixed the two end (U shaped) pieces of plastic first, because this enables you to then centre the middle strips and leave an equal small gap each side. I simply spread a thin bead of Loctite Super Glue Gel along the centre of the tape on the reverse of the glass panel, and then firmly pressed the plastic strips into place, holding each for about 30 seconds. When you do the centre strips it is important to note that they are not interchangeable – the one closest to the centre panel has a chamfer along its edge.
Here’s the glue that I used – I needed both 3g tubes to glue the complete upper glass:
I then moved onto the CD door strings. First I tried simply replacing the broken plastic slider from the earlier photo. Although I managed this successfully, the door would stick when opening and closing. I then removed both strings and gave the entire system a good clean – rollers, drive shaft and sliding grooves. Upon re-assembly it still stuck!
Whilst observing the door opening and closing with the BeoCenter in the service position, I then noticed that the upper CD string was fouling on the drive shaft. I think the string was sticky/greasy (perhaps it had been ‘lubricated’?) and was sticking to the drive shaft. Basically it couldn’t slide axially, hence the three loops moved to the outer edge of the drive shaft and then started wrapping over itself and jamming.
Anyway, I decided to replace the strings and thankfully this cured the fault. The door is still slower than the tape door but this is to be expected because the door also moves the CD clamper mechanism in and out. I also cleaned and lubricated this mechanism to make the door’s task easier.
Many thanks to Beitie for the inspiration and also for his invaluable tip about painters tape which is very useful for holding ends of the string in tension whilst re-threading the rollers.
One other thing I found useful was using a small bulldog clip to hold one of the sliders in place whist re-threading the string on the other side. You can see it in this photo:
Also, just as I was finishing my wife noticed the difficulty of the task, went upstairs to her craft box and came back with these ‘crossing lock’ tweezers, which would have been very useful several hours earlier to move the tiny knotted ends of the drive cord into place! I will use these next time!
Anyway, it’s now all re-assembled and up and running, but I will test it over the next few days before taking back to my mother-in-law. I am using the A2 Active as a speaker connected to one of the Powerlink sockets.
I had some free time this weekend, and I wanted to spend some of that time exploring more on my Beocenter 9500. The first thing I wanted to take care of was the center mirror panel. The last time I buttoned this item up, I noticed that the upper left screw was not threading into anything.
Luckily I found the threaded part laying on the PCB below the hole. I put a few drops of super glue onto the outside of it, and put it back into it’s home. I noticed that there was some cloth tape covering the hole so that this item shouldn’t have been able to fall out, but the adhesive on the tape was dried and the tape was brittle. I re-covered the back side of the hole with some painters tape for now. Along with the super glue, this should be good for another 30 years I hope.
I was hopeful that this would somehow allow my Beocenter to power back on, but no such luck in that department.
I spent a little time with a multimeter probing the power transformer. While I understand electricity very well (I work at a generator factory, and calibrate meters for a living) I find schematics so busy and they trigger ADHD in me so that I cannot focus on one thing.
That all said, I was finding voltages on all spots that I expected. So more exploration will need to be done.
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