- Recaped the whole motherboard. It had heavy corrosion damage, so some PCB tracks had to be rebuilt. I tested already all affected areas, there's continuity on every track I replaced, and I completely cleaned the corroded solder/tracks.
- U7 (odd CIA) was getting hotter than normal, so I removed it until I know whats happening. Since a missing odd CIA gives a light green screen on boot (at least on my Amiga 500), I removed it until I fix the black screen and it goes to light green.
- Halt pin on the 68000 goes high at power on, and then low about 1 second after. While HALT is high, I can see data on address/data lines on 68000 and KS ROM, but it all ceases when it goes low (obviously).
- Reset circuitry seems to be ok: pin 3 on 555 starts high and goes low after half a second.
Eduardo