Quote:
Originally Posted by twotires
Ok. After a little more investigation:
I've got good solid +5V coming off the regulator so all chips are on and working. I'm getting a solid yellow LED which tells me the brain is OK. The +12VDC coming out of the CINCON DC-DC converter, .... however, is not so good. It's 255kHz garbage. A triangular wave pattern.
Any ideas if that is due to a bad DC-DC converter, or is it probably coming from somewhere else?
Thanks!
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The DC-DC converter will have a high frequency triangle wave of 10mV-100mV superimposed on it's output. If it's higher (it likely is, or you wouldn't have mentioned it), check for a problem in the gate drive circuit that would cause a high power draw.