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IFR 1900 LCD brightness

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IFR 1900 LCD brightness

Postby rgpace » Tue Jan 12, 2016 11:03 am

I just purchased an IFR 1900, working great with the exception of the LCD brightness. Is there a way to increase/decrease the brightness? I may be super obvious but I cannot seem to figure it out. Thanks, Ron

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Re: IFR 1900 LCD brightness

Postby jry » Wed Jan 13, 2016 11:46 am

do not believe the either the LCD version of the 1600 or the 1900 had a user adjustable brightness.

If there is an adjustment it may be in the LCD assembly for the back lighting intensity.

These are older LCD displays that use a high voltage supply and a CFL tube for back lighting. It could be either the supply or tube is weak if not adjustable.

It does run off the 12VDC so maybe a poor connection there.

You have to pull the front panel in order to get to the LCD IIRC

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Re: IFR 1900 LCD brightness

Postby Audiotron » Thu Apr 06, 2017 12:32 pm

Hi Friend

By the time of use the CCFL lamps can be with excessive wear, I have replaced them with LEDs and their current control to modify the luminous intensity by PWM control

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