taito cabinet

[sp0rk]

Not sure if the cabinet brand will help any.

I am starting to wire up my 3rd jamma cabinet, and I've been using parts that were left in the cab (AC).  The isolation transformer looks like it's attached to a huge board, and I was going to take it right out (it unscrews off the board) and trash the board.  I already disconnected, located, and put up the filter. 

The wierd thing is, this iso has a TON of wires going in and out of it.  My other two cabinets were straight forward iso's.  Can I use this iso from this block, or do you have to use the whole board?  The wires are in two sections of 3 with matching colors (looks like maybe ac in x 2, ac out x2 and ground x2?) but there are a ton of wires on the other side of the transformer as well.  The wires don't appear to be connected to a post anywhere, it looks like the come right out of the coil (wierd).

Just wondering if anyone has done this before.  The other two cabinets are so clean and uncluttered on the inside, this is just a beast, and I find it completely unnecessary. 

I wish I could take pictures, but I lent my camera out and won't get it back till monday.  Thanks for any help!

[MonitorGuru]

A Taito could have been an old late 70's Taito cab and converted many times before it became Jamma, so without pictures it's very hard to say what you have.

All classic games had at least an isolation transformer. Some also sent low voltage AC (7, 14, 30 V) to a large transistor board to convert it to DC before the days of switchmode power supplies.  So you'd usually see two power bricks in old games like PacMan and Galaga.

However some companies used a single larger transformer to convert both the isolation (a 1:1 winding) as well as the low voltage (10:1 = 10 volts out, etc..) . So some of those wires may have only 5-30 volts, while another pair will have 120 volts.

We will need pictures of the front label and wires on the secondary side of the power supply (as well as a few surrounding shots probably/both sides) to help figure out what brand of game was in there. You can't assume it's a Taito, as someone along the line could have moved a Williams or another one in there.

Pictures will help considerably.

Worst case, plug it in, and carefully take your voltmeter (SET on 200 VAC) and test EVERY pair combination of wires (knowing that at least one pair probably can bite you with 120 volts--so assume they all do!).

If you have 3 wires out, that's only 2 checks, 4 wires = 6 checks, 5 wires = 10, 6 wires = 15 checks...  It's not exponential, but just a bit of work and easily doable.

[sp0rk]

Upon closer inspection, it appears the power filter routs into an AC dist. block, (it has standard plugs, that's what threw me off) then from there through the iso, and the iso has 6 wires out that plug into smaller outlets (without ground plugs)then feed into a board(looks like a fuse board, but it looks like a pcb board).  I'm guessing one of the plug in areas is where the monitor is supposed to plug into. 

It looks like the left hand plugs are routed through the iso, and the right side isn't. 

I'm thinking this is more 'complete' than I thought before.  it just has so many more casings/etc that seem bulky and unnecessary.  :\

BTW, this cabinet is a jungle green color, if that helps any :\  It last had a Sega baseball game in it.