billbriscoe
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I believe that what you are describing as the cd allocation buttons and the door opener are in fact the primary keyboard (there is a left and and a right) and these are PCBs 11 and 12. PCB13 is the secondary keyboard (volume, bass, treble, tuning, etc). B&O has referred to the secondary keyboard as the close up operation panel in some of the user reference materials. Both the primary and secondary keyboards plug into PCB3, the main microcomputer and power supply.
Have you double checked to make sure that the secondary keyboard has been properly attached and seated? It might be a good idea to remove it and try reseating it again (connector plug first) and maybe even try it in both orientations?
Hi, the IR PCB is to the right of the tape and CD mechanisms in the gap between them and the amplifier and in the middle of the two mechanism plastic covers. To remove the right speaker cover remove the 2 screws on the back, and then carefully lift the plastic edge of the speaker fret up slightly so it will clear the lip it is sitting in, then slide the fret out to the right. It is held in place by a number of plastic tabs that fit under some slots, so do don’t lift up, just slide it out to the right. If I recall correctly after a couple of inches of travel it becomes loose and you can then lift it off. Remove the glass door.
Remove the tape and CD plastic covers, 4 screws on each at the corners, just move them over to the left a little bit so you can see PCB 6, the IR PCB, in the gap.
The IR PCB is between the tape mechanism and the amplifier, you should see it very close to where the glass door stops when fully closed. Sometimes you can get lucky and it will lift straight up and out after you loosen the wire bundle.
It sounds like there are many steps and pieces to remove but it is actually a pretty simple procedure, likely with a much better write up that describes the disassembly on the forum somewhere.
Good luck,
Bill
I had a similar problem on one of my BS9000s and it turned out that the cable from the keyboard had come loose at the PCB connector (PCB 3, connector P13) or it might have been P71 on PCB13 (secondary keyboard) but I think it was P13 on PCB3.
Good luck,
Bill
Hi,
The foam material does breathe. The sound absorption is greater the higher the frequency, so the base port should be getting all the lower frequencies. I have changed the foam damping in my BL8000s to the updated version a number of years ago. The base response was not impacted. I use a pink noise generator along with a real time spectrum analyzer to adjust my system to be as “flat” as best I can. The lowest frequencies needed to be turned down a bit to get to “flat” response.
I think the foam materials and location info provided by B&O are just fine to use as-is.
Bill
