I don't know what to check....I have an NBA Fastbreak..has sound coming out of backbox speakers....nothing out of the bottom cabinet speaker. Checked and reseated wiring. Nothing seems to work. Any ideas as to what I can check and/or where?

Also, after watching gameplay videos online, it seems that when the IN THE PAINT is lit and the ball is shot in the back, the player has the option to use the flippers to switch shooters and then shoot. My game has yet to do this. Even took glass off and hit switches, rolled ball into back and nothing. The game just automatically shoots the ball from whatever eject hole it lands in. I began investigating and noticed that a wire was broke off player 4 upkicker coil. I will try and resolder that..not sure if that would cause it? Any other ideas? I am fairly new to this game. Thank you.

Thank you.
Speaker wise, does it have to match the ratings from the original? Want to get one that is the same.

Yes both register in switch test...left, left and right, right. I will try cleaning anyway and see what happens. If they both register could it be something else? Thanks.

Was thinking car audio speaker....I will look into it...I may have an arcade speaker. I also have a demo man and could use that too.

Yes switches register. I am able to put initials in no problem. I will take a picture of mpu and wiring when I get home later from work. Thanks.

Tested speaker in another cabinet....it doesn't work. Assuming then it's blown. I will have to locate another....if anyone is selling one cheap let me know.

Here are pics of boards for help. Machine switches register....both sides. Will fix coil wire tonight although unlikely problem here.

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Tested a small speaker 8 ohm. Didn't hear much out of it, however it was vibrating during game music and seemed to work. Old speaker wouldn't even do that.....didn't vibrate or respond at all...

Still stuck on the in the paint. I don't know much about the game so it makes it hard to know what is normal.
I cleaned all switch, opto. Both flipper sides register in switch test. In solenoid test the defender inches along almost like it bogged down...goes to one side very slowly...not sure if that is right.
Switches entering in the paint on both sides register in switch test. During attract mode the defender moves to one side (like it normally should) then stops .So it seems the motor is working. The defender always moves out of way when basket is made too to let ball roll down. I fixed coil for shooter 4...it works but no in the paint mode. Every time it's lit, ball goes up, lands in hole and it immediately shoots. The defender doesn't move ...only to let the shot ball roll down again....any other ideas? Very fruastrating. Thanks.

Not sure how to measure resistance on speaker, sorry I'm new at this....do I use the multimeter? What setting?

Good news....I was messing with the exit switch on left outlane....Seems it wasn't depressing all the way....bent it so it registers and in the paint works. Now I need to bend it with my fingers enough to undistort it so the ball rolls over it and registers. Seems to be working now! I need to adjust both sides...so thank you for sticking with me!!!!!!! Now onto the speaker....should I attach old and take a reading?

Here is my meter...if you could walk me through how to measure the speakers I can do it and report back. Thanks again!

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5.5 from the cabinet one.
5.3 from the mini one I had from an arcade.

I have been testing the opto and switches....it seems as they all work in switch test. I discovered that those two rollover switches on each side entering the paint area need adjusting. When I press with my finger they work, however, when ball rolls over them quickly they do not register. I have been adjusting to try and get it right. No luck yet I'll keep at it tomorrow. If ball rolls over slow then it works....so I know the paint mode works I just need to get the switches right so when ball flies through there it will register.

I have batteries, lithium. They are mounted in the side on a remote battery holder. If I do decide to go nvram I will most certainly ask for your help. Thank you for the offer.
I own demolition man as other pin.
I am going to continue tomorrow. If there is anything I am missing let me know. If it is just a bad speaker I can just buy one and be done. Thanks again for stepping up. I appreciate your help.

My bad...missed the earlier post about game disconnected and off...
So the cabinet speaker registered nothing. Meter didn't move
The arcade speaker I had to test that was vibrating during the game tested at 8.1 It is an 8 ohm speaker.

I will consider that, thanks!
When I push on the old cabinet speaker I hear squeaking....so sounds like it is blown? I did try this speaker in the Demo Man and nothing happened. So I would seem logical that it is the speaker...
Found this on Ebay....ohms match, but power handling is a bit more...would this work in the pinball machine?

ebay.com link: NEW 6 5 Woofer Speaker 4 ohm 6 1 2 MTM bass replacement six half inch mid

Mounting hole measurements are closely matched. Ohm rating is the same. Since power handling doesn't seem to matter then maybe I will try. Pretty cheap too. I just didn't want to damage boards etc. by using the wrong speaker....sounds like I wouldn't then.
I will report back with the switches and the speaker update if I get this.

I will try that.
I ordered on of those speakers. I will report how it works, if it does. I will re-post about switches too when I get to it. Thanks for the suggestions.