If your solid state game blows the main-line fuse immediately, and
violently, chances are that your varistor has shorted. The varistor is the
surge-suppressor component on solid state games. It is usually about the
size of a dime and is colored red or green. It is wired directly across the
main line wires to prevent power surges from going any further in the
circuitry and destroying the expensive parts of your game. You can easily
test this my clipping out (or desoldering) one of the varistor leads. If
the game comes up and no longer blows the fuse, you've found the
problem.
Caution: DO NOT run your machine without a varistor. If a power surge
hits your machine is unprotected!
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