There is a ribbon cable between the two boards that can be easily damaged.
Check it carefully.
Dave
WA0ZZG
----- Original Message -----
From: <yaesu-request@contesting.com>
To: <yaesu@contesting.com>
Sent: Sunday, June 28, 2009 2:00 PM
Subject: Yaesu Digest, Vol 78, Issue 14
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> Today's Topics:
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> 1. FT-5100 Backlighting problem (Ted Boerkamp)
> 2. Re: FT-5100 Backlighting problem (Nate Bargmann)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 28 Jun 2009 13:36:24 -0400
> From: "Ted Boerkamp" <tboerkamp@cogeco.ca>
> Subject: [Yaesu] FT-5100 Backlighting problem
> To: "Yaesu reflector" <yaesu@contesting.com>
> Message-ID: <7u1un7$2c5fa@fipsb02.cogeco.net>
> Content-Type: text/plain; charset="US-ASCII"
>
> Hello everyone..I managed to replace all 3 of the backlight bulbs in my
> FT-5100 no problem and
>
> when I applied power to the radio (before re-assembling it), I had all 3
> bulbs lit up ok. Now that I have
>
> re-assembled the radio, I have no backlighting whatsoever. I have checked
> the bulbs and they are
>
> still good. I have tried a cpu reset to no avail. I have re-attached the
> two
> ribbon cables over and over
>
> to no avail (the digits and everything else come on ok) The rest of the
> display and radio works no problem.
>
> I have now found that when the radio is on, that there is no voltage
> getting
> to the front panel to
>
> light up those lamps. My problem appears to be between the control panel
> board and where the
>
> ribbon cables attach on the front panel. Has anyone experienced this
> before???? I do not have
>
> the service manual and the boards have no silk screening to aid in
> troubleshooting anyway.
>
> Any help would be appreciated. This is most frustrating.
>
> Regards,
>
>
>
> Ted VE3SS
>
>
>
> ------------------------------
>
> Message: 2
> Date: Sun, 28 Jun 2009 13:59:54 -0500
> From: Nate Bargmann <n0nb@n0nb.us>
> Subject: Re: [Yaesu] FT-5100 Backlighting problem
> To: yaesu@contesting.com
> Message-ID: <20090628185954.GX16722@n0nb.us>
> Content-Type: text/plain; charset=us-ascii
>
> * Ted Boerkamp <tboerkamp@cogeco.ca> [2009 Jun 28 12:38 -0500]:
>
>>
>> Any help would be appreciated. This is most frustrating.
>
> If I recall, my 5100's change the backlight brightness by pressing the
> F/W button and rotating the VFO/Mem knob while the F icon is lit to
> change the brightness.
>
> 73, de NAte >>
>
> --
>
> "The optimist proclaims that we live in the best of all
> possible worlds. The pessimist fears this is true."
>
> Ham radio, Linux, bikes, and more: http://n0nb.us/index.html
>
>
> ------------------------------
>
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> End of Yaesu Digest, Vol 78, Issue 14
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