RE: Tempest Troubles - Please Help

In a message dated 4/1/99 6:58:17 AM, raiford@mindspring.com writes:

<< Well.. I replaced the 7815 and the 7915 a couple times and it didn't seem
to help things any. I did notice that there is +25 on the input leg and
not +22.. could that make a difference? Also, I pulled the 7815's and
7915's off other boards. Are these things all the same? Or are there
variations I should worry about? And can I test them when I pull them
off to make sure they are good? It's possible I killed them while
trying to desolder them, but they are made to get real hot, so I doubt
it (and the -15 worked fine after replacing them). So where do I go
from here?

Thanks in advance, >>

I had this same problem once. On one of the test points the 15V had dropped
to 6V. I checked all the components that ran from the 15 V regulator to the
next test point. I got to one chip with a 6V reading. I touched the chip
with my finger, and it was extra hot. Replaced it and everything worked
great. It was shorted and acting as a resistor. Since I don't have a Tempest
board in front of me, I can't tell you exactly which component to look for,
but it's in the output section. Hope that helps?
Received on Thu Apr 1 11:08:42 1999