Problems with LK204-25

fungus · Post by **fungus** » Thu Oct 17, 2002 9:26 am

Hi,

I purchased a LK204-25 about a year ago, and it always worked fine. But now, for an unknown reason, nothing shows on the screen. I verified with a multimeter and my power supply gives it a regular 5 volts...

Should the LCD show the blinking cursor even if the serial cable is not attached?

How can I verify if the unit is burnt or dead in any way?

Thanks!

Miles · Post by **Miles** » Thu Oct 17, 2002 3:58 pm

Hello...

Is there a backlight when power is applied to the unit? If there is can you turn the backlight on/off using AlphaDemo?

cubatitaderon · Post by **cubatitaderon** » Thu Oct 17, 2002 4:04 pm

I have the PC version of your display. I have the same problem.

I send a email to matrix orbital with my solution not professional but it runs.

I put a switch in the +5V power cord. If i push the buttom the power doesn't go, buy if i don't push it goes.

Well when i power on my computer the lcd don't show the logo. If i push the switch some times (three, four or five normally) the lcd displays the logo and my LCDC program works very well.

I'm happy for my display works but i don't like the solution.

I hope that this help you.

Can anybody explain me the problem? Can you send me a solution more proffesional?

I try into another two computers and the problem continues then the origin of the problem don't is the power supply and don't cable power too.

Thanks and excuse me for my english.

fungus · Post by **fungus** » Fri Oct 18, 2002 5:02 pm

When I power the unit nothing happens. No backlight, no blinking cursor. Just as if there was no power applied at all.
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tweak-freak · Post by **tweak-freak** » Mon Oct 21, 2002 9:34 am

that doesn't sound good amigo......usually if theres no backlit ....its probably dead...

Miles · Post by **Miles** » Tue Oct 22, 2002 2:37 pm

Can you email me at myero@matrixorbital.com and we can discuss a few different options.