20 Sep
2008
20 Sep
'08
2:11 p.m.
I replaced the TL494 this afternoon (thanks to a local
electronics store
that actually has useful stuff!) but it does not appear to have made any
difference. I get the same voltages on the TL494's pins as I did
before. Any other thoughts?
Thanks once again...
Josh
Hi Josh
Can you take some more voltage readings.
It would be good to see Pin 4 and Pin 9 of U4. In fact, it would
be good to see a repeat of all the pins of U4 again.
Can you also take readings of the pins on U5 as well.
This will help quite a bit on trying to understand what
is causing the failure.
Dwight
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