Weird speaker crackle after replacing the speakers..

[Caldwaller]

I've been fixing up a SFII Turbo cabinet, (bought some art work from the vendor section) and 1 speaker worked, the other was dead.. I replaced them both with the exact same brand and model speakers, and they work fine for about 5 minutes and then start crackling and going on and off..

Everything is wired the same, I've double checked to made sure all the earths are still there, as far as I can tell literally the only difference is the speakers.. so I have no idea, and hoping someone else might..

Any ideas would be appreciated thanks.

[baritonomarchetto]

Maybe you swapped - and + on one of the two speakers?

[Caldwaller]

Maybe, I'll give it a looky..

Thanks.

[Caldwaller]

Turns out it only likes one speaker.. One speaker plugged in, works fine.. both crackling.. so it's half sorted

[Game_Dr]

I've been fixing up a SFII Turbo cabinet, (bought some art work from the vendor section) and 1 speaker worked, the other was dead.. I replaced them both with the exact same brand and model speakers, and they work fine for about 5 minutes and then start crackling and going on and off..

Everything is wired the same, I've double checked to made sure all the earths are still there, as far as I can tell literally the only difference is the speakers.. so I have no idea, and hoping someone else might..

Any ideas would be appreciated thanks.

If one speaker was bad and it only started doing the crackle after 5 minutes go straight to the audio amp IC.

Turn on the game and let it start to crackle. Turn a can of air upside down so you get the liquid and shoot the IC with a 2-3 second burst. If the crackle disappears then you have a bad audio amp IC which is not uncommon in a speaker failure.

Be aware having a metal can inside a live cabinet...   

[Jverive]

This sounds like a bad coupling capacitor, so check those too (if the amp uses them, of course). Otherwise I agree that the audio amp IC (or transistor driver or other thermally sensitive device in the audio path) is suspect. Also check power supply voltages.