I was successful with the disassembly, battery replacement and reassembly up to where I reassembled the circuit board. Here I discovered that the thin red cable on the upper left hand corner of the board was only attached on top and not on the bottom. From another battery replacement video I can see that the other end of that cable is attached somewhere on the underside of the board. However, I cannot determine exactly where that end was attached (i.e. no evidence of a solder connection). Can anyone identify where and how that is to be reconnected.