[Amps] Amps Digest, Vol 35, Issue 22

[Jerry]

Check the power transistor mounted right behind the led panel, when 
you open it up you should see it right side. They use a transistor 
plug that can get intermittent and cause strange problems like this, 
happened to me so I know this may be a problem.

----------------------------
 >
 >Message: 9
 >Date: Sat, 12 Nov 2005 08:43:21 -0000
 >From: "IK2RZP" <ik2rzp at hotmail.com>
 >Subject: [Amps] Alpha 89 strange behavior
 >To: <amps at contesting.com>
 >Message-ID: <BAY107-DAV23C43DBC8102A2CCE11CFC87580 at phx.gbl>
 >Content-Type: text/plain;      charset="iso-8859-1"
 >
 >Hi from Italy!
 >I own an Alpha 89 amplifier and use it for my second radio (IC765) in my
 >SO2R set up.
 >Till now everything was ok. But this week the amplifier sometimes jumps in
 >"fault" position
 >even without transmitting and even without connection to the radio. More
 >than this, as I
 >can transmit when I stop to PTT with microphone or RTTY software, the 89
 >immediatly
 >goes in "wait" position and restart as just turned on (after a couple of
 >minutes it's ready again
 >and red light "wait" turn off), but if I retry to tx again when I stop to
 >transmit it turns on red
 >light "wait" etc. etc.
 >Tubes are ok because when PTT is applied with 50-60 watts amplifier gives
 >about 1,5Kw.
 >Any suggestion?
 >It's hard to find Eto-Alpha labs here in southern Europe!
 >73s
 >IK2RZP Gino
 >
 >
 >------------------------------
 >
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 >
 >End of Amps Digest, Vol 35, Issue 22
 >************************************