The batteries are pretty much dead (very old AA's direct soldered, reading 3V, will have to pick up a 3xAA holder and install it with some new AA's), but figured that would only affect it retaining its memory, and not setting it in the first place (correct me if I'm wrong?) I've gone through and reseated all of the connectors on the CPU board, and got it booting, and luckily it already had an external battery installed. After going through some pretty shitty times in my life (including just having a stroke, which is a whole other story :() I've decided to try and get it going again as a bit of mental rehab. 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.Picked up a Magic Castle not working ages ago (with great help from Greg) and it's sat here untouched without me having the time to touch it. 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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