HOW TO CHECK WHETHER 16X2 LCD WORKING OR NOT

on Tuesday, 29 October 2013

Are you worried whether your 16x2 Lcd is working or not? Are you worried whether it is burned or working well? Here is the solution, just follow the below steps to find your solution...

FOLLOW THESE STEPS :
>> Connect the pin vcc pin to 5v

>>Connect pin Vee and gnd pin to ground

>> Connect Led+ to 5v

>>Connect led- pin to ground


After you made these connections then Lcd look somewhat like this below  i.e the lower line will be brighten..




 
If your Lcd is not working well, then both the lines will be bright shown below






Important Note: Most Lcds can withstand upto 9v( but not all), and dont worry if u
applied 9v without knowing it.. Do above steps with 5v only...

Tutorial(with code) on  interface lcd with microcontroller then check  " Interfacing 16x2 lcd to Microcontroller "


AUTHOR: YOUSTRON SIC










20 comments:

Edson Wruck Junior said...

Thanks for the post! This help me to conclude that my display is not working.

Anonymous said...

Thanks!
I was desperate, and you had the answer!

nice!

Shankar S said...

Thanks a tonne man! This is the exact test i have been looking for!

Anonymous said...

Thank u, You saved my time. It's too bad. I wasted 4 hours and don't know why it's not work. Now I knew. Gonna buy new LCD. Thanks again :)

Abdul Bari Chanessra said...

This first feature was a problem for me, because I bought it with the intention of attaching it to an Ethernet Shield to display my current book Amazon ranking touch lcd screen

Suchit Khadge said...

Thank you. that really helped.

Anonymous said...

Thanks. I need a new LCD :(

Er Bharath Clinten said...

i connected VEE pin to pot network and got black boxes in one line but the brightness of those boxes doesn't change with pot value

Arifin Budi P said...

Thank you, now i know how to check LCD working or not working

Arif said...

Thanks for your idea.
I have an LCD Display removed from a clock, do you know how test it.
I guess such type of LCD are customized and terminals are unknown but there could be some way to test it.
Pls advise.
Regards.

Sandeep Reddy said...

Help please..
My LCD doesn't even light up (jhd162a) after making the above connections.. Can this happen??

Anonymous said...

Thanks. My LCD backlight wouldn't light up... could only see the text vaguely. After connecting it like this the backlight lit up again. It somehow resetted the LCD back to normal.

rahul sai said...

I cant see any blocks on my lcd but it is glowing what could be my problem

Dag Arne Rødsjø said...

Thank you, it helped me not to throw away my 1602 :-)

Anonymous said...

in your statement for testing 16x2 you state the lower line will be bright. then you make the statement that if your LCD is not working both lines will be bright. If step 1 is working how do you test the top line?

McVicars video said...

cracked LCD screens, I really like that information. Now need to all over the world. So I like to your suggest webpage..Thank you

Sowpath das said...

its very impormative,learn more : see more

Awesome. LIFE said...

thanx sir
there may be any method to correct the lcd if both line blocks are brighten

Tirth Patel said...

Thank you very much. This is best working method. :)

Anonymous said...

Thank you. This was a real life saver. Thanks man

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