TFT problem

[Ismael Aguilar]

Hi Fernando congratulations for your website and your ferduino mega

Since you ask in portalpez and you gave me a solution to the problem I had with my screen. I would fix it according to your instructions but I've noticed that your shield is different to mine and not know exactly where to weld. Could you help me?

Thanks!!!

[Fernando Garcia]

Hi!

Welcome Ismael!

You tried change the switch on TFT shield to 5V?

Best Regards.

[Ismael Aguilar]

Thanks Fernando


if you've tried and does not work

PD: I have another screen and sometimes when I turn the screen goes white, from left to right. I have to turn it on and off several times to function properly.

[Fernando Garcia]

With the switch in 5V, check the voltage on pin "LED_A".

[Ismael Aguilar]

3.89 in both positions

[Fernando Garcia]

3.89 is too, should be 3.25 more or less.

You can cut the trail that goes to this pin and put the potentiometer as shown in the image above.

[Ismael Aguilar]

What trail?

then the problem is the shield? the screen was the same in both shield ....

[Fernando Garcia]

I don't know.

I haven't this shield.

You need search.

The problem should be on shield because the voltage is high on LED_A.

[Ismael Aguilar]

I bought the shield was in itead, which one you're wearing?

[Fernando Garcia]

http://imall.iteadstudio.com/prototypin ... 17001.html