Grandstand Firefox F-7 Fixed!

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Dec 222014
 

Not only do I play around and repair arcade machines, but I’m also keen on tinkering with electronic handheld games from the 80’s. I picked this up on a local buy/sell page on Facebook, for a fairly small amount, but sadly it did not work.

I thought I would open it up and see if I could fix it as I had nothing to lose. It’s a fairly simple board as you can see below:

Firefox Internals

I noticed straight away that the two chips on the PCB were getting no power at all, and thought the problem would likely be one of the transistors. I removed the large D882 transistor and it was shorted. I replaced it with one I found on Ebay and this was the result:

Firefox