Arcade Collecting > Pinball
First pinball. cleaning the playfield. UPDATED: pictures added
grbgemen:
well i plugged in the new rottendog power supply. crossed my fingers and turned the machine on. i heard a slight click after pressing the power switch. lights came on. and then a loud buzz. sounded like when you hold a the flippers on. i looked up at the new power supply and i started to see grey smoke coming out. i quickly flipped the switch off and unplugged the machine.
looks like a Rectifier Diode burnt up. model #1N4004.
so what caused this? just bad luck? faulty board from rottendog? or just a bad rectifier? or is it something worse?
shardian:
First thoughts: you plugged the J1 supply harness in upside down. This is BAD.
If all of the lights came on and you heard a loud buzzing - like the sound of all the coils energizing - then odds are all coils were on...which is possibly very bad.
Look at the bottom harness on the Power supply. There should be a sticker that denotes which side should be facing up. Unfortunately that harness is not keyed (nice huh?)
If indeed you put it in wrong, I sure hope you only left it on for a few seconds at most. At the least, your new Power supply was fried and needs repair. You also probably fried some components on the CPU - maybe even a rockwell chip or two.
WELCOME TO THE WONDERFUL WORLD OF PINBALL!!!! :dizzy: :dizzy: :cheers:
grbgemen:
well i flipped the connector around and hit the switch. buzz is gone. i hear two(i think two. maybe just one) clicks. Play field is lit. back glass is lit. score displays are blank.
it appears the previous owner, removed the coin mechs and added a credit switch. i tried to add a credit but it does nothing.
i only left it on for maybe 10 seconds. right as i was reaching under to turn it off, i heard a buzzing sound getting louder and louder.
not sure where i should go from here. replace the rectifier on the PSU?
what on earth did i get myself into?
shardian:
There are two transformers in the bottom of the cabinet that have a buzzing sound. You might just be hearing them. Lift up the playfield and that will be easy enough to figure out. where it is coming from.
If you heard 2 clicks after about 5 seconds, your game is at least trying to boot. As to the displays not coming on, your fuse could have blown during the initial power up.
Before you apply power to this game again, you need to go thru the Marvin3m system 1 guide and check some things. And yes, that diode needs to be replaced on the power supply.
http://www.pinrepair.com/sys1/
grbgemen:
i replaced the diode. it was one click. the click is from the Q and T relays.
i started looking at the repair guide you posted. i found an old multimeter(non digital) and im gonna start following the steps. try at least.
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