From: Ron Wagner 
Subject: Re: [drakelist] TR-4 (run a way)


Ron Wagner  made an utterence to the drakelist gang
----------------------------------------------------------------------
Have a look at the negative ~65 V lead on your AC4. My guess is that you 
lost that bias voltage.

Take the AC4 off of the rig. Open the bottom cover to allow access to the 
voltage for measurement.  You can then simulate TR4 power switch by 
putting a jumper from pin 1 to 2 of the connector cable, then plug the AC4 
into the 120V outlet (preferably through a power strip so you can turn it 
off/on with ease).

You can then measure all voltage as they leave to go to the rig.

Please BE CAREFUL as all the voltages are there, and the voltages and 
current they supply can kill you.

73,
Ron
============================================================
Visit my astronomy home page.   http://www.dma.org/~wagner
Amateur Radio Station: WD8SBB - Ron  and  KB8NRP - Joann
============================================================

On Sun, 19 Dec 2004, AAM4NC BILL WHEELER wrote:

>
> AAM4NC BILL WHEELER  made an utterence
to the drakelist gang
> ----------------------------------------------------------------------
> I turned on my Drake TR-4 tonight and as the rig warmed up a relay clicked,
> then the rig appeared to go into  transmit mode the PA tubes began to glow
> bright red but no power out shown on the watt meter.  I cut the power and
> tried again with the same result, anybody have a thought?
----------------------------------------------------------------------
On Behalf of Ron Wagner 
Submissions:        drakelist{at}www.zerobeat.net
Unsubscribe:        majordomo{at}www.zerobeat.net - unsubscribe drakelist in body
Hopelessly Lost:    majordomo{at}www.zerobeat.net - help in body of message
Zerobeat Web Page:  http://www.zerobeat.net
Brought to you courtesy of TLCHost.net  http://www.tlchost.net/
----------------------------------------------------------------------

---