[TechAssist] Re: Fisher AMP CA-9025...DEAD**more info
- From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 20 Sep 2001 19:27:35 -0400
Jim,
As stated, in the subject..this is an AMP.
I'll follow the other instructions I received.
Thanks for your time.
Jeff www.9-11-2001tragedy.com
Help those affected by the NY/PA tragedy:
The Red Cross needs is mobilizing a national blood drive and needs your
help. Please call 800-GIVE LIFE, to find out where in your area you can
donate blood.
FAX 1-413-280-0677
Intrepid Video & Electronics
Harrisburg, PA 17111
717-909-8844
www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
----- Original Message -----
From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, September 20, 2001 5:18 PM
Subject: [TechAssist] Re: Fisher AMP CA-9025...DEAD**more info
>
> Must not be a Fisher CA-9025 then, unless Fisher used that model number
more
> than one time. Maybe the one you are working on is just an amp, the one I
> have a manual on is a receiver amp.
> Jim Myers
> jr.myers@xxxxxxxxxxx
> ----- Original Message -----
> From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
> To: "Techsonline" <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, September 20, 2001 3:26 PM
> Subject: [TechAssist] Re: Fisher AMP CA-9025...DEAD**more info
>
>
> >
> > Jim,
> > Thanks for the help, but are we talking the same unit?
> > This thing does not have an LCD display and now switch labeled 'power
> > standby'.
> > There is only one switch I am not sure what it is for is labeled 'source
> > direct'
> > I see no IC701, nor any 700 series on the main board. It looks like the
> 700
> > series may be on the front board. There are only LED's on the front of
> this.
> >
> > Jeff www.9-11-2001tragedy.com
> > Help those affected by the NY/PA tragedy:
> > The Red Cross needs is mobilizing a national blood drive and needs your
> > help. Please call 800-GIVE LIFE, to find out where in your area you can
> > donate blood.
> > FAX 1-413-280-0677
> > Intrepid Video & Electronics
> > Harrisburg, PA 17111
> > 717-909-8844
> > www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
> >
> >
> > ----- Original Message -----
> > From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Thursday, September 20, 2001 11:53 AM
> > Subject: [TechAssist] Re: Fisher AMP CA-9025...DEAD**more info
> >
> >
> > >
> > > Jeff, I have a microfisch manual, can't print or fax it. The power
> switch
> > > turns on the standby 12v for the relay and is regulated to 5v by Q501
> for
> > > the microprocessor IC701. Pin 64 of IC701 should have 5v thru Q701
which
> > is
> > > used as a diode, 5v to the base and emiter, collector to pin 64. IC701
> > pins
> > > 19 and 20 are the xtal osc, pin 21 is reset, pin 47 is PROTECT NOT if
> you
> > > follow the meaning, pin 48 is PWR RELAY, pin 49 is SPKR RELAY.
> > > Pin 48 must go high to turn on Q502 power relay driver. Something has
to
> > > tell the micro to output a high at pin 48 to turn the unit on from
> standby
> > > mode, I have a picture of it in mind and I think it is a switch to the
> > right
> > > of the lcd display that is called power standby, when pressed it
should
> > turn
> > > the system on including the ac outlets on back to provide ac to the
> other
> > > parts of the system. If pin 47, PROTECT NOT is low this may keep it
from
> > > turning on. IC701 is under the lcd display on the front panel pc board
> as
> > I
> > > recall.
> > > Is this any help?
> > > Jim Myers
> > > jr.myers@xxxxxxxxxxx
> > > ----- Original Message -----
> > > From: "Jeff Dougherty" <jeff@xxxxxxxxxxxxxxxxxx>
> > > To: "Techsonline" <techassist@xxxxxxxxxxxxx>
> > > Sent: Wednesday, September 19, 2001 5:52 PM
> > > Subject: [TechAssist] Fisher AMP CA-9025...DEAD**more info
> > >
> > >
> > > >
> > > > First, pressing power only lights the power standby light. Power LED
> is
> > > not
> > > > lit.
> > > > Power button is push switch, so no micro.
> > > > Power Relay, no click, has 12 vdc on each side to ground, AC side
has
> > > > 120vac.
> > > > Output transistors are not shorted and do not test open. Two small
> > > > transistors, on same heat sink measure about 40 ohms from base to
> coll.
> > > > I did not find any open resistors, shorted caps, or open/shorted
> diodes,
> > > of
> > > > course, I may have missed one.
> > > > Heat sinks all check OK, no open traces and I looked very closely.
> > > > Does this unit have a shut down circuit and would anyone have a
print
> > to
> > > > fax me?
> > > > Thank you for listening to my story.
> > > > Jeff www.9-11-2001tragedy.com
> > > > Help those affected by the NY/PA tragedy:
> > > > The Red Cross needs is mobilizing a national blood drive and needs
> your
> > > > help. Please call 800-GIVE LIFE, to find out where in your area you
> can
> > > > donate blood.
> > > > FAX 1-413-280-0677
> > > > Intrepid Video & Electronics
> > > > Harrisburg, PA 17111
> > > > 717-909-8844
> > > > www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
> > > >
> > > >
> > > >
> > > > Help make your TechAssist online repair tips
> > > > database better! Submit your fixes here:
> > > > http://www.circuitwork.com/techassist/tip/#tips
> > > > To unsubscribe write to:
> > > > techassist-request@xxxxxxxxxxxxx
> > > > with unsubscribe in the subject line.
> > >
> > > Help make your TechAssist online repair tips
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> > > with unsubscribe in the subject line.
> > >
> >
> > Help make your TechAssist online repair tips
> > database better! Submit your fixes here:
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> > To unsubscribe write to:
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> > with unsubscribe in the subject line.
>
> Help make your TechAssist online repair tips
> database better! Submit your fixes here:
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>
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