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
Hi,In restoring quite a few Beomaster 8000 units over the last few years I have seen Beomaster 8000 Microcomputer boards with different parts. Most of those differences are documented and expected. However, there is one change that I don't have any documentation for...The "slave" processor, 9IC4 is usually identified as part number B08340239S (as seen in the attached photo). I have come across several Microcomputer boards where 9IC4 is marked with a part number as B08340265S. The boards appear to work the same but I am wondering if the new B08340265S firmware is different.Note that all of the boards where I have come across the updated 9IC4 have been from Beomaster 8000 USA models. I am wondering if any European Beomaster 8000 owners have Microcomputer boards with 9IC4 part numbers B08340265S?
I would also be interested in any information about the change of that part.
Here is a photo of two different Beomaster 8000 Microcomputer boards (the early version and the later version). It also shows the two different 9IC4 part numbers.
Thanks, -sonavor
Hi John,
How are you?
I have two BM8000s and I have both versions.
The cases are different: one is easily opened and the other is a PITA.
Jacques
Hi Jacques,
I'm doing well. Yes, the early version boards (8002401) are a real pain to open up for sure. Do you have any photos of the processor ICs from when you did your restoration?
John
That's fine, thanks Jacques.
It has the expected B&O original B08340239S for 9IC4. Hopefully some other owners in the Europe market can see if anyone has the B08340265S chip.I suspect is was produced (or licensed to be produced) by B&O as a replacement spare. Having a different part number though makes me think they updated the firmware. I haven't come across any different part numbers for 9IC3 yet. So far they are all B08340238M part numbers.
Did a few work today on my BM8000 in the microcomputer area, so I took the opportunity to take a photo of the IC. I also have a second BM8000 (most recent serial) that I keep for parts (but never took anything out of it since I would prefer repairing it instead.)
A strange thing I notice : on the recent one, jumpers are soldered directly to the ic pins. On my "working" unit, the jumpers are soldered on the back of the PCB...
Guillaume