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@hotmail.com>
>Subject: [Amps] Alpha 89 strange behavior
>To: <amps@contesting.com>
>Message-ID: <BAY107-DAV23C43DBC8102A2CCE11CFC87580@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
>************************************
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