Re: DC503 Not Working


On Tue, Jul 28, 2020 at 02:12 AM, <> wrote:


According to my diagram, R331 should be 5.6k. Actually, if it's 1k, there
should be no problem (unless someone changed it in the past to try to cure the
real problem).
It appears to be stock. And I measured it in circuit. I’ll lift a pin and see what it says...

Move the test lead to pin 6 and measure the voltage there. If
it is logic HIGH, the multivibrator should run; logic LOW inhibits the
Will do.

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