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Yaesu FRG-7700 Tuning dial mechanical fault
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Lucifer
Jun 10, 2019, 3:30:30 AM6/10/19
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The tuning dial of my Yaesu FRG-7700 receiver will not rotate beyond
about 780 Khz.
Is that easy to fix?
about 780 Khz.
Is that easy to fix?
peterw...@gmail.com
Jun 10, 2019, 8:32:16 AM6/10/19
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http://www.radiomanual.info/schemi/YAESU_RX/FRG-7700_serv.pdf
If it is mechanical, it may be jammed on something caught in the gears, or perhaps the gears have slipped. Otherwise, you may need to replace the part.
Peter Wieck
Melrose Park, PA
Cursitor Doom
Jun 10, 2019, 2:32:11 PM6/10/19
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On Mon, 10 Jun 2019 05:32:13 -0700, pf...@aol.com wrote:
> If it is mechanical, it may be jammed on something caught in the gears,
> or perhaps the gears have slipped. Otherwise, you may need to replace
> the part.
If the main bearing is badly worn, then those teeth can come out of mesh.
> If it is mechanical, it may be jammed on something caught in the gears,
> or perhaps the gears have slipped. Otherwise, you may need to replace
> the part.
I've had this with a Trio TS530s. It's a simple matter to reset the
gears, but if the worn bearing isn't dealt with beforehand it'll come out
of mesh again pretty quickly.
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Lucifer
Jun 11, 2019, 12:10:54 AM6/11/19
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On Mon, 10 Jun 2019 18:32:07 -0000 (UTC), Cursitor Doom
<cu...@notformail.com> wrote:
>On Mon, 10 Jun 2019 05:32:13 -0700, pf...@aol.com wrote:
>
>> If it is mechanical, it may be jammed on something caught in the gears,
>> or perhaps the gears have slipped. Otherwise, you may need to replace
>> the part.
>
>If the main bearing is badly worn, then those teeth can come out of mesh.
>I've had this with a Trio TS530s. It's a simple matter to reset the
>gears, but if the worn bearing isn't dealt with beforehand it'll come out
>of mesh again pretty quickly.
It works properly up to about 800Khz. Further rotation of the dial
<cu...@notformail.com> wrote:
>On Mon, 10 Jun 2019 05:32:13 -0700, pf...@aol.com wrote:
>
>> If it is mechanical, it may be jammed on something caught in the gears,
>> or perhaps the gears have slipped. Otherwise, you may need to replace
>> the part.
>
>If the main bearing is badly worn, then those teeth can come out of mesh.
>I've had this with a Trio TS530s. It's a simple matter to reset the
>gears, but if the worn bearing isn't dealt with beforehand it'll come out
>of mesh again pretty quickly.
is possible but the frequency on the digital readout and the part
around the dial do not go any higher.
Hopefully when I take the cover off I will be able to fix it.
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