Looks like a good playfield. Get more pics of lower playfield .

When you say it's not working...do all the displays come on? What happens when you hit start? Are there credits in the game if not in free play? All balls are in?

Dead batteries?

That 149... code means the battery is dead or you have bad ram. Turning it off and on quickly can sometimes bypass the battery issue.

There will be three, located inside the backbox. Remove the backglass (VERY carefully, and avoid setting it somewhere it could fall) and open the inside panel with the light bulbs - there will be a latch on one side that you pull up, and the panel will swing out. The batteries will be on the upper left circuit board.

Definitely look at them - I would at least remove them, and there are guides online (here and elsewhere) on how to clean up battery leakage damage if there is any.

Incidentally, I cannot really estimate a value as I'm not an expert on the early Williams SS games, but that machine looks to be in very good shape. If you are not comfortable working on it, I highly suspect that some enthusiast here would indeed be willing to buy it as-is.

Edit: Playfield wear and backglass flaking seem practically nonexistent, at least from my brief glances at your photos. Warm white LEDs across the board would keep glass and plastics perfect basically forever, and a skilled clearcoat job would keep the playfield perfect forever as well. If you decide to work on the machine before selling, I would also consider adding plastic protectors (clear plastic washers to help prevent edges from breaking).

Basically... there's lots of bulletproofing that can be done on a game like this. If you lived closer I would find it hard to resist the urge to buy this thing.

The best way to determine condition (for a prospective buyer at least) is to just take lots of pictures, inside and out. Pics of all sides of the cabinet, front, back, and under. Pictures of the playfield with the glass off. Pictures inside the backbox showing the boards. Pictures under the playfield and inside the cabinet. Pictures of the back of the backglass.

For yourself, just check for obvious signs of water damage, rust, etc.

Missing paint, most common around the inserts. If you can see bare wood where it looks like there should be artwork, that's "wear".

Paint that has fallen of or has lifted from the surface it was applied to and about to come off.

Sounds like you're getting power so check in the backbox to see if anything looks unplugged or loose. Obviously, check all this with the game UNPLUGGED.

If you're not able to fix it yourself (which it doesn't sound like you are), it's probably best to sell it as-is. Any prospective buyer probably has the capability to fix it themselves and would buy the machine based solely on condition.

Sorry, can't help you there but I'm sure others will chime in.

Just going off the pictures you've supplied, it looks to be in very nice condition. Hard to tell without more detailed pictures (see first paragraph). I'd say easily $1K+ in non-working condition. Maybe more once more pictures are available.

If you were closer, I'd buy this in a heartbeat!

If there's any corrosion on the holder you should remove it. You'll get a flaky connection and the corrosion can still soak down the leads and into the rest of the board.

I'm going to say that you are not getting voltage to the memory, and I base that on the looks of the right battery holder. You are likely still getting the 1497 in the player one display.

It sounds like you're not familiar with an ohmeter, so I won't go into details on how to check voltages. So, in my opinion, with the backglass in good shape, and the playfield only having minimal wear, I don't see a problem getting $1100 - $1200 as is. Make sure you are honest about the battery holder - the MPU will need to be repaired.

GREAT looking example of Firepower! You have a beautiful survivor there!

I wish you were closer, I would be on my way over to help you get it working and back into playing shape!

I remember that Firepower on eBay, it was also in pretty good shape playfield wise. You have a nice original backglass, nice original playfield (with I'm sure some cupped inserts). As mentioned, 1000-1200 would be a good price for you in non-working condition. I honestly think it would be a tough sell for a non-working one at 1700, but hey, I suppose you can never go back up. And if you list for 1200, I'm sure someone will offer you 400 . On eBay, you can also list as Local Pickup only with no shipping option...

As a disclaimer, I already have one, so I'm not trying to talk you down in price. I bought mine in the area working for 700 3 years ago, albeit with a much worse playfield/backglass combo. But of course times/prices have changed...

that battery holder is toast. You can see an air gap where the rivet came apart on the top of the rightmost battery spot.

Prior to replacing that battery holder you can get the game temporarily out of the test/audit mode by opening the coin door, then quickly turning the game off and back on. If you do it quick enough the game should switch to attract mode. Then you can coin it up and hit the start button so see what works.

Nice looking firepower. I’d be all over this if it was local. Been wanting one for a while. Good luck with it!