Monitors keep blowing fuses...on 2 machines!

[Ken Layton]

Anytime you blow a fuse on the monitor when you connect the gameboard video signal to it, I've found that switching power supply for the gameboard is connected improperly to the AC power line.

Remember that the only thing that should ever be connected to the secondary (output) of the isolation transformer is the monitor. That's it's purpose: to ISOLATE the monitor power from everything else lest you blow up something. Follow the two AC power wires from your gameboard switching power supply. They should NOT be connected to the output of the isolation transformer.

As to the Kortek being called junk by your tech, I beg to differ. Some problems can be traced to numerous bad solder joints (much the same as Wells-Gardner has soldering problems), flyback problems, (the same as Wells-Gardner and Electrohome), a blown horizontal output transistor (like a Wells-Gardner), bad capacitors, (just like any other monitor), or a bad voltage regulator (again just like a Wells-Gardner). I wrote a repair guide to the KT-1420A.