Re: DC503 Not Working

Harvey White

If the two capacitors are ok (when one leg lifted), yet are not shorted, and there's still a short measured across them, then what else can be shorted?  TTL Chips will measure a low resistance from vcc to gnd  when properly biased, so many times, you may be tempted to blame the capacitor.  Assuming, then, there's a short somewhere.


On 7/27/2020 1:53 PM, Stephen wrote:
On Mon, Jul 27, 2020 at 01:18 AM, <scm@...> wrote:

Check to see if the multivibrator capacitors are bad (possibly leaky?). Also,
check for signal on pin 10.
C330 and C335 read the right value within specs. they are not shorted And apparently not leaky. I read zero resistance across them.

Will check signal on pin 10 of U330 and report back soon.

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