HI all,
After reading MGalusha's great story on recasing an SB, I got inspired

to at least have a go at repairing this problem myself.
Opened up my SB 3 and found that some of the solder connections to the display seemed a bit "dry" to my lay eyes. What I mean is that there seemed to be very little solder in the connection, not a properly flowed blob.
First try: resoldering these connections. That seemed to work for about 5 minutes (at least I didn't kill it!). After that, same problem with the band disappearing in the middle of the display.
It seems that there is some component involved in making the display work that is susceptible to use (heat?) that causes the display to not work in this way.......

Any ideas on what I could try next?
Groeten,
Ferdi