If you've got proper and full audio from the front headphone jack, but
none from the speaker jack, you may have the same failure I had in my
FT990. The circuit board containing the speaker jack had some sort of
corrosion problem and one etch was about gone, the one carrying the
audio to the speaker terminal.
I removed this board, added a wire to it to carry the audio, and the
radio was just fine.
Not sure if it'll be the same problem in yours, but it's worth a look.
Getting at the board isn't that easy, but it is doable.
Dan N1JEB
Bill Brannick wrote:
>
> I have intermitent loss of loss audio output on my FT-990 except for
> the phone jack on the front of the radio. I have tried disconnecting the
> external speaker and other cables going to the TNC, etc.. I have checked
> squelch.. I have reset the microprocessors....
> I am out of ideas... obviously, I can limp along using a headset.... but
> would prefer to use the internal or external speaker also when desired..
>
> Any help on this one would be appreciated...
>
> --
> BILL BRANNICK | Costa Mesa, CA
> Amateur Radio Station: KN6FJ
> A NFL Rams and Dodgers Fan For Over 50 years!
>
> --
> FAQ on WWW: http://www.qsl.net/k7on/yaesu.html
> Submissions: yaesu@contesting.com
> Administrative requests: yaesu-REQUEST@contesting.com
> Problems: owner-yaesu@contesting.com
> Search: http://www.contesting.com/km9p/search.htm
--
FAQ on WWW: http://www.qsl.net/k7on/yaesu.html
Submissions: yaesu@contesting.com
Administrative requests: yaesu-REQUEST@contesting.com
Problems: owner-yaesu@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|