Normalli, It shouldn't change on its own.  Check the SET Menu options.
73
Bob Martin

EchoLink Node - 55127
Please visit http://www.wan-leatonks.net.
----- Original Message ----- 
From: "john vernaleken" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, November 18, 2009 3:55 PM
Subject: Re: Icom 746PRO Question


> Hello Martin,
> Thanks for the suggestion. My XYL was able to see a very dim display and
> change the settings which did not change the display. At this point I 
> guess
> it is a bad LCD.
>
> Thanks,
>
> John  KC2QJB
>
> ----- Original Message ----- 
> From: "Martin McCormick" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, November 18, 2009 10:45 AM
> Subject: Re: Icom 746PRO Question
>
>
>> john vernaleken writes:
>>> With the little vision I have I just realized the display is dark. My
>>> question is:
>>> Could I have  hit a wrong button that turned it off or did it burn out?
>>
>> I can't give you a definitive answer on that specific
>> radio, but I own an Icom ICR75 and it has a
>> software-controllable back light on its LCD display. In the
>> factory default configuration, this light comes on at 128 on a
>> scale between 0 which is off and 255 which is full brilliance. I
>> have been playing occasionally with computer control of the
>> receiver under linux and have been able to change that setting.
>> Since I can't see it anyway, I usually keep it off but if it is
>> controllable, it can be accidentally controlled. For sighted
>> users, it is a value that can be set from one of the menus so
>> you might have accidentally dialed up the wrong menu and dimmed
>> it out when you were really trying to maybe select a different
>> filter or set one of the other parameters. I am just guessing
>> but you might look in to that to see if you can get the light
>> back on.
>>
>> Martin McCormick WB5AGZ  Stillwater, OK
>> Systems Engineer
>> OSU Information Technology Department Telecommunications Services Group
>>