Need help

[iron7]

Hi everyone

I have bought an acrylic i3 pro B 3d printer. Today while i was printing suddenly the printer stopped, the lcd screen showed error max temperature. I checked the extruder thermistor, i replaced with an other, i tried to re upload the firmware but nothing worked. The only method that i could manage the printer to work was by replacing the board with arduino mega + ramps 1.4. I bought the printer from geeetech ebay store about 9 months ago. The board from the manufacturer is sanguinololu. Is there something helpful to solve this or simply the board is dead ?

Thank in advance

[Mark]

check this link first:
http://www.geeetech.com/forum/viewtopic ... 13&t=17030

[iron7]

Dear Mark

I followed step by step the previous guide. When i attached a jumper at extruder's thermistor pins and i got 358 ℃ / 0 ℃ and Err: MAXTEMP as you refer. When the jumper is unplugged, lcd displays 266 / 0 ℃ and Err: MAXTEMP constantly. What else would be causing this issue ?

[Mark]

since you can make it work using the ramps board, then it might be the sanguinololu's problem. How about reinstall the firmware?

[iron7]

I tried to reupload the firmware, the problem continuous. Even when i changed thermistor, the same issue. Something else that can i do to fix it ?

[Mark]

how about the back of the connector? does the pins have a short with each or not? If not then seems you'll gonna need a new board ..

[iron7]

Hi Mark

As you can seen in the attachment, there is no short circuit. Even if it was a short circuit, lcd screen should display 358 C and not 266 C Error. Finally i need a new board ?
Ι bought the printer from geeetech's ebay store at 7th of May 2015. Is there a product warranty ? The receipt id is 2417-5145-6841-2186

[Mark]

yeah you need to contact the sales on the website to talk about it.