Tpad problem

Hi friends.

Then recently I bougth a 2 TPAD module with Cyclone4. Using a application note of kit I start to use a device.

After some test I detect a problem that I beleive will be a problem with hardware.

After build a NIOS ( default of applications ) and send a program using a NIOS22 Legacy, my application draw a sine wave on screen, but after some seconds the screem stop to work. The screen that with with background ( black ) and sine wave line red, stay totally white, and don't work more.

After start this problems I start to verify a search of error. After a bug on plataform I cant transfer a new program to NIOS II I need to reload a NIOS CORE to send a new program.

And before of bug a center line on screen start to move 3 pixels to each side and return to center .

Anyone know what is happening? Any has some application on nios and can send me to verify my hardware.

Thanks for attention and best regards