[GreenKeys] ASR33

Sam Stinson samstinson at gmail.com
Wed Apr 12 19:12:42 EDT 2017


Shouldn't it be a 20mA or 60mA loop current for the model 33?

On Wed, Apr 12, 2017 at 3:59 PM, Michael Zahorik <m.zahorik at sbcglobal.net>
wrote:

> Yep, checked that, it's about 450 ma. I think this unit was used for an
> airline. There where United marking on the interface converter. So I
> suspect that it was ON all the time. Seems all the top resistors, R2,6,7,8
> all have brunt the board.
>
> Mike Zahorik (414) 254-6768
>
>
> ------------------------------
> *From:* Jim Haynes <jhhaynes at earthlink.net>
> *To:* Michael Zahorik <m.zahorik at sbcglobal.net>
> *Cc:* "greenkeys at mailman.qth.net" <greenkeys at mailman.qth.net>
> *Sent:* Wednesday, April 12, 2017 5:48 PM
> *Subject:* Re: [GreenKeys] ASR33
>
> you might measure the current through the selector magnet and see if it
> is 500 ma.  Check whether the power transistor is shorted.
>
>
>
>
>
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