A meter is going to be the first thing to grab. I'd check the fuses again. Game off, pull one end of each fuse up and measure continuity.

Turn game on and measure AC at the cord into the transformer, main switch, voltages out of the transformer to the fuses, etc. If you have a schematic, you can systematically start going down each line and seeing where you may or may not have power. I've never heard of an EM being completely fried.

If the fuses are blown, you'd better find out what's causing the issue.

more info needed on these pops....what's it sound like? Electrical frying pops, stuttering relay kind of pops...the game isn't fried. Also, are you sure you had "blown fuses" or did you just replace a bunch of fuses because the game wouldn't start? Also, when you replaced the fuses did you put in the correct fuse?

You're going to need to get one from Steve at the Pinball Resource.

http://www.pbresource.com/mansch.html

Have you looked at your power cord? Trace it from transformer out the cab to see if it is damaged?

I ask about the fuses because I have owned/repaired a few dozen EM's and have never had a fuse problem...doesn't mean yours wasn't but that's a common theme when you grab games off craigslist--"probably a blown fuse" when it really isn't.

As stated above, you will first need to get a digital multi-meter. With this you can test for ac voltage, dc voltage, shorts, grounds, and open circuits.
First thing I would check is power coming from the transformer. With a multi-meter you will be able to see the different voltages. Without one, it will be impossible to troubleshoot this.

Fuses for this machine are, 2, 10 amp fuses for the lamp circuit. 1, 10 amp fuse for the relay circuit. 2, 1 amp SLO-BLO fuses for the target bank reset, 1, 1/2 amp SLO-BLO fuse for the sequence bank reset, and 1, 5 amp SLO-BLO fuse for the ac power.

Maybe backing up a bit and giving more details would help. It doesn't sound like you are checked out on using a multimeter at this point. Did you just get this game? Was it working/playing before all this or this is the first time it has had any life? What has been done to it in your troubleshooting? What exactly is it doing now?

This thread might help focus your tech questions:

https://pinside.com/pinball/forum/topic/how-to-efficiently-ask-for-pinball-repair-help-em

Multimeter.

Check that the power cord gets the proper voltage at the transformer lugs, I'd guess that's your issue. These things do go bad. "Looks fine" means jack squat.

Varistor blown?

https://www.greatplainselectronics.com/products.asp?cat=76

In an EM?

Just make sure you are not a path to ground.

It is rare for a transformer to just fail on its own. Yes it can happen.

As other Pinsiders have stated check the power cord to the transformer. If something metal, has fallen on or touching the outputs and the ground on the transformer, will cause a problem. Loose connection also will cause a pop, arcing of electrical current, so will a damaged or old power cord, that has become brittle. Or shorting out the fuse, inline with the on/off switch. Even an on/off switch can fail and cause a short.

If the power cord or the power cords plug has been damaged, or your wall socket, usually, not always, will have hopefully tripped your breaker. Or blown the fuse in the fuse box in your home/garage.

Something simple to check next.

The plug outlet to the wall that you have the machine plugged into still have power? Test with plugging a lamp into the outlet. There is a chance that a short on the machine blew the wire off the outlet terminal but may/may not have tripped the circuit breaker.

I have had something similar happen with an appliance before in which the circuit was overloaded/shorted.

Check your house breaker.

The fact that you did not blow any fuses on the machine to begin with leads me to believe that the power cord on your machine "may" have caused it, that "may" skip the fuses from blowing on the machine as it is the first thing power goes to. Check your cord thoroughly. If the cord is fine it may have been a short with the outlet to begin with and not the fault of the machine itself. Fix your electrical outlet then see if it happens again.

You can also put the red probe tip into the ground receptacle on the outlet, and the black probe tip into one side. BE SURE that you have the meter set to AC first.
Some cords on pinball machines do not have the third wire used for ground. If yours doesn't, it might be wise to add one. Also when testing for voltage in the machine, you only need to have one probe tip attached to ground, and the other used to test the contact in question. Again, be sure the meter is set to AC.

I make it point to ALWAYS replace power cords on any pin I buy. No sense in trusting an unknown cord,

I do it 90% of the time, the other 10% I am just lucky the current cord is in good shape or has already been replaced.

Trace it back to the transformer and you'll see where it's soldered to the lugs...take a pic. Desolder it. It's tied in to the wire bundle. I cut out the excess power cord and leave what I can't get to in the bundle--remove the rest. Grab an extension cord and chop off 1 end. Snake it down in the same route and zip tie it to the wire bundle. Solder in place, done. If you get a 3 prong you should be able to connect the green ground to a bolt near transformer.

I'm sure others have different methods but this has worked a dozen times for me without blowing up anything....yet

Pinball Resource sells a nice 3 prong 14' cord for $6.35, I always buy theirs.

http://www.pbresource.com/tools.html