On Wed, 22 Feb 2012 08:08:26 -0500, JW wrote:
On Tue, 21 Feb 2012 09:11:09 -0700 Jim Thompson
wrote in Message id:
:
On Tue, 21 Feb 2012 06:45:08 -0500, JW wrote:
[snip]
Only in terms of resistance out of circuit with a DMM, and in-circuit by
observing a negative voltage anywhere from roughly -1VDC to -4VDC at U27
pin 3. I guess the only mystery left is why they fail so often. Thanks
Jim.
[snip]
-4V at U27, pin 3, implies one helluva lot of current, or a failed
LM324... it should behave as a diode and some 10's of Ohms of series
resistance.
...Jim Thompson
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