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>=20
> I'm not familiar with that chip, but the first thing that comes to mind=
 is to
> put a scope on the RC components and look at the freq (should be a sawt=
ooth
> most likely). If it varies in freq, and +V doesn't change, it should be=
 the R
> or the C. That's probably what I'd look at first, even if only out of
> curiosity... ;)  In the process, I'd also verify the V driving the RC
> components for shifting.
>=20
>=20
> -Skip
>=20
>

Thanks Skip:

   That's pretty much what I did. Actually the RC components did vary in =
frequency while the +V does not change. I don't think the RC are dead tho=
ugh... But I'll definitely check the V driving the RC, should come out fr=
om a  reference voltage pin from that chip.


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