PlasmaSonic SSTC Boards - Mistake Found ! ! !

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>

I knew my luck would run out someday . . .

Anyways, an minor error has been identified on the PlasmaSonic SSTC boards.
The Output Control select pin on the TL494 was incorrectly tied to Vcc
instead of Vref on the board.

To correct this problem:

1.  Use an razor blade, knife, or similar to cut the trace going from Vcc to
Pin 13 of U21 (TL494).
2.  Attach a short jumper wire from the now isolated Pin 13 to Pin 14 of
U21.

This should correct the problem.
Luckily, this is a very simple fix which can be done underneath the board
and maintain the pleasingly aesthetic looks of the PlasmaSonic SSTC ! !

The Captain