![]() ![]() Meanwhile a "control LED" is blinking rapidly. If both memory chips are ok, the test will automatically continue the "input test". If something is wrong then the test will continue to run the memory test. At startup all outputs will go up and down in rhythm, between 5 and 0 volt. You should visit his site, as a lot of technical information about Zaccaria is collected there, and it was the only website on which I found some technical information. David tried out this repair method and reported positive results and made several corrections for the English translation. ![]() For the first time in almost a year this game is showing signs of life.Īlways keep it simple and look for basic things first.First generation, Earth Wind and Fire, Hot Wheels, Future World, House of Diamonds, Winter Sports, Shooting the Rapids, Fire Mountain, Space Shuttle, Star God, Locomotion. All of the other caps on the power supply were changed except for this one. To keep it simple I changed the cap without doing any other diagnosis. It’s a simple circuit made up of an LM339, some transistors and a few other passive components, including a 1uf radial aluminum electrolytic capacitor. Cap C9 was missed and prevented the logic board from starting. Farfalla power supply power failure circuit. All voltages were present so I knew there wasn’t a failure. There’s a power failure circuit on the power supply and if it’s faulty it can prevent the logic board from coming out of reset. It’s always fun figuring out a problem when multiple hands have been involved. The game worked fine before rebuilding the power supply. Someone rebuilt the power supply in this Zaccaria Farfalla and the game wouldn’t start, after several board changes including a different power supply and a brand new logic board, it still wouldn’t start. ![]() I recommend investing in an inexpensive ESR meter so you can test caps before changing them to help pinpoint problems. Change your caps! The capacitors in your games can be several decades old. ![]()
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