The crystal is singing at 32768 Hz but its at about negative 2 V, is this normal?
I checked this on a 77-II (same chipset). The right side of the crystal is a nice 2Vp-p sine, and swinging from about +0.5 to +2.5V wrt ground (the COM jack.) I see the manual says 600mVp-p, but this is what I get.
The reason you're seeing something different is probably because your TP1 voltage is wrong. U1 has internal regulators to create the digital ground 3.1V below the positive battery terminal, the remainder of the battery voltage makes up the negative supply. Your TP1 is 5.4V, so something is definitely wrong with this function of U1.
TP3 is one of the LCD drive lines, which all should be swinging from 0V to 3V with a nice slow 50% square wave. This would normally read 1.5 VDC. If yours is 0V, the digital processor U2 must not be running. I figured this was due to lack of a clock, but it may be power supply related instead.
The battery is at 9.38V : )
At least that seems right.
TP1(5.4V) - U1P48(-4.0V) should equal the battery voltage. Kirchoff must have been onto something.
Not sure where to tell you to go from here, seems everything is pointing at a power supply problem related to U1. Maybe check the battery current draw. Should be about 280uA in VDC mode. At least it's another data point to consider.