Yep the likely problems with a heavily expanded PPC system are :
1.HEAT
2.LACK OF POWER
3.BOTH
So to fix 1 you need put a large blower directly on the BVision Permedia chip in addition to an exhaust fan over the PPC heat sink.
To fix 2 you then have to make sure the A1200 motherboard has enough power. Plugging a small floppy drive power connector into the floppy drive socket on the a1200 motherboard (be careful to plug it in correctly: done at own risk). You must also ensure you have a good power supply (250W+). Eyetech do a power feed adapter to enable power to be fed into the PPC directly. Finally ensure you have a motherboard that has all the timing fixes.. avoid REV 2.B or 1.D.4. The most reliable m/boards are 1.d.1. We use a 1.B and that starts every time.
If you do all of this you should have a reliable PPC Amiga.
