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ESR / C tester problem

Equipment, circuits, projects, procedures

Postby s@ki » Sat Jul 02, 2011 12:00 am

Hi,

I've just finished soldering this tester, IC and PCB were bought directly from Elektor.
Problem is that it does not work.
When I start it there's only "barcode" like thing on the display.
I've checked all soldering points, all IC's are on sockets, voltages on power pins are all ok.
I'm using "white" 2x16 LCD and have tried to change it with a blue background one.
Blue one lights up but with all on, there's 2x16 white rectangles displayed.

Can someone help me with this problem ?
s@ki
 
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Joined: Thu Jan 02, 2014 10:47 am

Postby eguy » Wed Nov 13, 2013 12:00 am

Strange that nobody bothers to answer this question!
eguy
 
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Postby hadihf » Wed Nov 13, 2013 12:00 am

check oscillator
hadihf
 
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Postby hadihf » Wed Nov 13, 2013 12:00 am

If only one line is displayed then oscillator not woking. Re-program the pics with correct config bits. If two lines are shown with blocks..may be lcd contrast needs to go down. Since backlit lcd is being used, check if lcd pins are correctly connected.
hadihf
 
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