James_in_MD
Well-known member
FIRE in the cockpit.....(Atari ARI power PCB problem)
I guess I should say "FIRE in the upright" instead. I have been playing a little DK lately and have a few other games on the same switch, including an Asteroids Deluxe and a JAMMA'd Taito that I had just brought down from the garage. So, while Mario was hammerin' away, I start to smell smoke - electrically flavored smoke, if ya know what I mean. I instantly assumed this was coming from the newbie JAMMA cab that I had just powered on for the first time since I got it. I took a look inside it and found no source of the smoke. Hmmm, weird, I thought. I then noticed the AD was not working and shouted, "MAN Down!", and rushed to power it off. I opened up the coin door and a fair amount of smoke started coming out. Damn. I closed the door and then got a shop vac and vacuumed all the smoke out of it - this worked quite well. The vac filter seemd the trap the smoke pretty good. I did a quick look inside the cab and couldn't readily find the trouble. The next day I was at the Crabtowne get together and talked to some folks about the problem. Oryk Zinyo suggested the ARI board. Well, he was right....
So, as you can see above that resistor is TOAST. Specifically, it was the 10 Ohm 1/4W resistor at R25. I replaced it with a 1/2 W resisitor that I luckily had on hand.
Well, I popped the board back in and it worked! Of course, I did not leave it on that long, cuz I was not sure if I had fixed the real problem or not. I will make some meter readings of the board while it's on and post them here later. Could it be just a bad resisitor or is there something else going on here? Anything in particular I should check?
I guess I should say "FIRE in the upright" instead. I have been playing a little DK lately and have a few other games on the same switch, including an Asteroids Deluxe and a JAMMA'd Taito that I had just brought down from the garage. So, while Mario was hammerin' away, I start to smell smoke - electrically flavored smoke, if ya know what I mean. I instantly assumed this was coming from the newbie JAMMA cab that I had just powered on for the first time since I got it. I took a look inside it and found no source of the smoke. Hmmm, weird, I thought. I then noticed the AD was not working and shouted, "MAN Down!", and rushed to power it off. I opened up the coin door and a fair amount of smoke started coming out. Damn. I closed the door and then got a shop vac and vacuumed all the smoke out of it - this worked quite well. The vac filter seemd the trap the smoke pretty good. I did a quick look inside the cab and couldn't readily find the trouble. The next day I was at the Crabtowne get together and talked to some folks about the problem. Oryk Zinyo suggested the ARI board. Well, he was right....
So, as you can see above that resistor is TOAST. Specifically, it was the 10 Ohm 1/4W resistor at R25. I replaced it with a 1/2 W resisitor that I luckily had on hand.
Well, I popped the board back in and it worked! Of course, I did not leave it on that long, cuz I was not sure if I had fixed the real problem or not. I will make some meter readings of the board while it's on and post them here later. Could it be just a bad resisitor or is there something else going on here? Anything in particular I should check?
