IFR 1900 upside down display

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rgpace
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Joined: Tue Nov 10, 2015 11:52 am

IFR 1900 upside down display

Post by rgpace »

I have three IFR 1900s, one is working perfectly except for the LCD that is now upside down and inverted. Do I need a new LCD module, is there a fix for this? Thanks in advance. Ron
Jim202
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Joined: Sun Sep 09, 2001 4:00 pm

Re: IFR 1900 upside down display

Post by Jim202 »

Have you tried turning the 1900 upside down to be able to read the display?
rgpace
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Re: IFR 1900 upside down display

Post by rgpace »

Good one. Might be fun to try, but it is also inverted. I will need to turn it upside down and look at the reflection through a mirror.
jry
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Joined: Fri Feb 06, 2004 3:14 pm

Re: IFR 1900 upside down display

Post by jry »

usual fix is to tear apart the front panel and the TFT display to re-seat the internal connectors.

I usually verify with the display outside the unit first and RTV the connectors as a final step before complete re-assembly.

Same issue as the COM-120C ...uses same display.

you may want to consider upgrading to an LED back light while you have it torn down since the CFL's will eventually die.
rgpace
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Re: IFR 1900 upside down display

Post by rgpace »

Thanks, I opened the unit, re-seated all cables, and with everything apart, it worked properly! I did not RTV the connections however. So when I put everything back together, it went wacky again.
Jim202
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Joined: Sun Sep 09, 2001 4:00 pm

Re: IFR 1900 upside down display

Post by Jim202 »

Sounds like a poor connection someplace. Have you tried to re-seat the connectors a number of times to attempt to remove any oxidation that may have developed on the contacts? This is a common problem in some of the ribbon cable connectors and some wire connectors with crimped on pins.

Jim
rgpace
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Re: IFR 1900 upside down display

Post by rgpace »

Thanks Jim, I will give it a go and exercise the connections.
blitza
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Re: IFR 1900 upside down display

Post by blitza »

Use a pencil eraser on the contacts
Jim202
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Re: IFR 1900 upside down display

Post by Jim202 »

Careful using the pencil eraser on the contacts as you can take the plating off. Use a gentile pressure doing this. It doesn't take much at all to clean the contacts this way.

Jim
jry
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Joined: Fri Feb 06, 2004 3:14 pm

Re: IFR 1900 upside down display

Post by jry »

make sue the eraser is new ...never been used and be careful.
usually clean the contacts with alcohol ( 99%) or contact cleaner
rgpace
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Re: IFR 1900 upside down display

Post by rgpace »

Thank you for your help. I am back in business today. Really appreciate the help.
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