Newbie on here. This is my 2nd machine, but my first one has been problem free. Even though I have 20 years experience with dc voltage, pins are a bit foreign to me. I acquired this in a barter and although the play field needed ugly work, the electronics in the back box were quite clean and serviced well best I can tell.
I just got it up running for 1-3 hours a day for a couple weeks. Then a couple nights ago approximately half the sounds just disappeared mid game. Half the music, half the sound effects, half the speech...just specific clips. No pop. No smell or smoke. Just decided to quit.
I have since removed both aux and main sound boards, cleaned(even though they were quite clean), inspected, reseated, tested voltage and continuity, etc...fuses. Nothing suspicious.
There are 2 AROMs on the aux board. There is a DROM and YROM on the main sound board. For grins and giggles I pulled AROM1 and booted it up. It seemed there was little or no difference in the clips I was hearing. Once I pulled the 2nd one, there were more missing clips but buzz’s and bleeps that I shouldn’t be hearing started happening so I quit there...yet there were still sounds being produced from the main board.
So my little knowledge of ROMs was playing with keyboards when I was a kid...can I assume likely AROM1 took a digger?! Or maybe one of the other 3 by chance. I’m not sure how common that occurs.
My theory is to simply pay to get all 4 imaged at this point. There may come a day they may not be available.
The rest of the machine is in 100% working order.
There are a couple archived threads on here, but everything seems to dead end without a resolution. Either they gave up or fixed it and never stopped playing!
But as a newbie, I’d like to know I’m heading in the right direction. I don’t know if it could be something off the main board or if there’s specifics I can test at the rom in circuit to verify anything. I also want to make sure I’m not replacing a defective ROM only to blow it in another 2 weeks because of a more core issue.