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- To: email@example.com
- Subject: Eberline ESP1
- From: firstname.lastname@example.org
- Date: Wed, 5 Mar 1997 16:15:22 +0000
- Comments: Authenticated sender is <email@example.com>
- Priority: normal
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Does anybody know how to fault find the regulated 5volt supply line
in ESP1's. I have been trying for a couple of weeks now and no luck!
I have replaced the 7663 positive regulator (A101), 2N4403 (Q101) and
2N4124 (Q102) as well as checking associated components.
With the unit turned on the regulated low voltage is 8.8 volts
(instead of 5.0 volts) measured at 12B on the rest connector. The switched Vc is
8.7 volts (instead of 4.85 to 5.0 volts) again measured at 9B on the test
Any clues to solving this would be appreciated.
Radiation Health Section