That pesky Jupiter Ace *still* won't work...

Hi, I've just finished fixing the Ace's PCB using wire-wrap wire. All the broken tracks I've managed to find have been fixed and all the damaged through-hole plating has been repaired. Except there's one problem. The Ace *still* won't boot to the FORTH interpreter. There is a load of garbage on the display - this seems to change while the machine is running. The power consumption of the board - CPU and all - is around 800mA (according to the crappy meter on my Farnell 1A bench PSU). I've got the output on the PSU set to 9V, no current limit. Does anyone here have a logic analyser or microprocessor debugger that I could borrow for a few days? I've got two scopes (a Tek 466 and a Gould OS1100) and a Fluke 25 multimeter, but that's about it in terms of test equipment. Alternatively, does anyone know if a diagnostic ROM exists for the Ace? Something that would replace ROM A and just load the video/font RAM with the usual Ace character set would be very handy. The 2114Ls I'm using appear to be OK, but they draw a lot of current - in the region of 75 to 100mA each. Thanks. -- Phil. philpem(a)dsl.pipex.com http://www.philpem.dsl.pipex.com/