Well yea. If a fuse is out replace it. But they're slow blow fuses and you usually can't tell they are out by looking at them. You said coils but not which ones. Sorry but your lack of info makes it impossible to help you without being psychic. If they are flipper coils that would explain the low power as flippers have hold voltage. But the fuse for that will be dedicate one per flipper.

If your 20v solenoid secondary fuse it out then none of your standard power coils should work at all. I'm not familiar with the WPC-95/S system so I can't say that for sure. The same goes for your flippers, you should get 1 flip (or multiple if Fliptronics sees a fault and fires the 50v coil again) and no hold power. But that's not that case for you either.

Replace the fuse first off...you should be able to buy them before ordering them. hardware store, or car supply store.
With power off, disconnect and reconnect all the connections to the board in the backbox, and pull out all fuses and put them back in.

my NF did this to me and i cried about for a day or two instead of just trying this very basic thing, which fixed it! Always try the easiest thing first.

probably you have different rows or solenoids, so go into the test menu and test them, probably 1 row will not work. It'll say like "coil 1-8," Coil 9-16,"or something like that.

basically with the fuse blown you solenoid that kicks the ball out of the trough doesn't work, so the game notices this and will not start. NF will say "Initialing please wait" but wouldn't start.

My Congo did the same thing...coils were very weak, not strong enough to pop the ball out of the volcano...

I replaced the 6.3 Amp fuse (secondary solenoid fuse) and it has worked fine every since, don't know what caused it to blow in the first place.

Phoebe

Why would a single fuse cause ALL coils to be weak? Does WPC-95 modulate power somehow?

Logically, a failed solonoid secondary fuse should make all coils completely dead - no secondary = nothing to rectify to get +50v.

A better question would be, why are the solonoids moving at all if that fuse is blown?
Measure voltage to ground from the power side of those solonoids (with the coin door switch held closed so it doesn't turn off anything and you can observe things as they are when it's trying to run)

The fuse is in series with the 50v supply from the transformer? That's very odd how the solenoids are still getting power.

ALWAYS try the easiest things first. All it takes is a screwdriver touching a couple things under the playfield and *poof*

Hm. What could've caused the fuse to blow in the first place? This isn't the only case we've seen this happen so maybe the board design should've called for a slightly higher fuse rating?