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This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
I currently have two BC9500s as I've mentioned before. One that I originally obtained for parts and the one I've already had.
The problem that originally lead to me getting the "parts" unit was the strange behavior from the first one starting with the "CO.dE" display and flashing when using the sound settings and all that. Come to find out in an obscure thread for a BO8500 that it was ALL the backup battery. I obtained the secondary unit because I thought my processor was bad.
Anyway, these units are only within 44 serials (!) of each other and I've observed some things in both. In the first one (which I replaced the battery in and am going to sell), I noticed that there was a cable plugged in to the spot on the IR board (located in the first picture, the metal casing which is directly to the LEFT and BELOW the CD door motor) which is EMPTY on the second one, but DOES have the pins inside, and I can not find a spare disconnected cable anywhere! Any idea why one has this and the other doesn't, or what signal passes through this cable? I've never had any IR problems with the 9500 unit that doesn't have it connected, 2 way or otherwise.
My second question involves the second photo (which I might have to post in a second reply). You will see there is a solder point on the casing of the processor module. Both units had this, with a VERY flimsy wire going to some kind of fuse or capacitor or something (seen in the background) which then connects to the grounding point of the case. When I looked up photos of this processor module being sold on its own, I didn't see one with this solder point on the case. I also broke this flimsy wire on the first one and I'm assuming I will need to just go ahead and de-solder it before I lift out the processor to replace the battery on the second one. Any idea what this is here for (if it's just a grounding point, what is the white box it's connected to)?
Thanks!
Here is the second photo, of the grounding point I was talking about.
Actually, never mind the question about the IR connector, I see there IS in fact a cable plugged in there, it was just hard to see because of the lighting at first.
I am mainly wondering what the purpose of the solder point is on the case of the processor unit, since they both had this and it almost looks like it was added after the fact. Rather a bit sloppy looking.
Playdrv4me: Here is the second photo, of the grounding point I was talking about.
Really? No insight on that ground above? Surely I'm not the only one who has opened a 9500 here. Perhaps this was only on the US units?
It's a capacitive coupling between signal ground (the shielding processor casing is a good point to connect)and mains earth (the exterior metal chassis parts of the Beocenter, that can be touched by humans).All original and found on practically all units mains powered units.
Martin
Dillen: It's a capacitive coupling between signal ground (the shielding processor casing is a good point to connect)and mains earth (the exterior metal chassis parts of the Beocenter, that can be touched by humans).All original and found on practically all units mains powered units. Martin
Martin,
Thanks for the insight. Good to know its original. I was originally thrown off because I somehow came across this picture from a company called "Quality Dream Audio" (no affiliation) that apparently provides used B&O parts, and in this picture it is clear that this processor never had that grounding point, even though they report it to be from a 9500... http://www.quality-dream-audio.co.uk/user/products/large/130319163.JPG
However, I now found another picture from them in Google search results of a processor for a 9500 and that one DOES have the little solder spot for the grounding wire.
Thanks.
Just realised that I had a picture of the inside of my BC9500 from when I was showing someone where the battery was located. The solder point is clearly visible in mine: