[GreenKeys] ASR33

[Michael Zahorik]

The 20/60ma is the current into the drive board. This higher current picks the selector magnet.
 Mike Zahorik (414) 254-6768

      From: Sam Stinson <samstinson at gmail.com>
 To: Michael Zahorik <m.zahorik at sbcglobal.net> 
Cc: Jim Haynes <jhhaynes at earthlink.net>; "greenkeys at mailman.qth.net" <greenkeys at mailman.qth.net>
 Sent: Wednesday, April 12, 2017 6:16 PM
 Subject: Re: [GreenKeys] ASR33
   
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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