[ICOM] IC-756PRO RF out problem.

[David J. Ring, Jr.]

I've had several rigs with QSK and when the power supply pass transistor was 
about to blow, the QSK sounded like what you mentioned.  Next time it 
happened (other brand) I knew what to fix before it blew out.

73

David N1EA

----- Original Message ----- 
From: "Mike" <k4gmh at arrl.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Saturday, April 16, 2005 7:43 AM
Subject: Re: [ICOM] IC-756PRO RF out problem.


Hello Lou,

Had a similar problem with an IC746. The power supply lost regulation.
Check the power supply output voltage under various load conditions.

At 06:35 AM 4/16/05 -0400, you wrote:
>At first I lost 50% of my RF output as shown on internal and external RF
>meter.
>
>Now, I lost other 50%. When I send dots (20wpm) into a dumy load, the
>display is
>not dimming but when I send dash, the display gets dark.
>
>I have not ordered a service manual as yet, so I am in the dark
>regarding this radio.
>
>Is this a power supply problem or a RF load problem?
>
>The 50% RF loss happened before but for no reason, the radio fixed itself.
>
>Did anybody run into this kind of problem before?
>
>73s
>
>Lou    KE1F
>
>Florida QSO Party, only a week away. Look for me on CW,
>
>
>
>----
>Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
>Icom Users Net: Sundays, 1700Z, 14.316 MHz
>Icom FAQ: http://www.qsl.net/icom/
>
73,
Mike,K4GMH
----
Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
Icom Users Net: Sundays, 1700Z, 14.316 MHz
Icom FAQ: http://www.qsl.net/icom/


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