Vcc buss rails being pulled down.

I'm working on a Slot machine MPU, with
similar 74xxx components like our arcade
games.

The Vcc buss is being pulled down to about 50mv.
The LM340T5 runs very warm, so were keeping the
power on time very low.

Besides removing the IC's one at a time (and
of course their not socketed ) is there a way
to ID which component is at fault ?

We've removed the IC's that are socketed, and
checked for warm or hot components.

Todd

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Received on Sun Oct 16 17:38:24 2011