Hi Ian,

Have a look at the flipper coils and see if any appear burnt and that the flipper bats can move freely. If they are siezed, then the coil could be fried.

The fuse can also blow if the EOS switch on the flipper mech is broken or mis-adjusted.
When the flipper bat is at rest the EOS Switch contacts should touch together (and the stationary switch blade will flex slightly, showing the contacts are touching together firmly). When the flipper bat is fully extended, the switch blades should be open.

If you follow the two wires from the EOS switch back to the flipper coil, these will be connected to the hold section of the flipper coil. These coils lugs should measure 0 ohms when the flipper bat is at rest and the EOS switch is closed and about 300 ohms when EOS switch is open and the flipper bat is moved up.

If you now measure between the middle lug and the other lug (which doesn't have any wires from the switch) on the flipper coil you should get about 3 ohms.

I hope this helps but let me know if you have any more questions.  I recently had to rebuild another Time Machine power supply from another collector. To do this properly required, replacing all the fuse holder, bridges, headers, and matching connectors in the harness. Not sure if this is a common problem on Zacs but this needed a fair bit to get right.

regards Derek