Need Help with GT2560 Rev A

[Realmoe]

I just replaced a generic 3d printer board a 2560 Rev A clone with a GT2560 Rev A board. I moved pin for pin to make sure everything was the same. When I turn on the power, the led display stays black and if I hit the wheel button just beeps. The main board itself get a green led from the power but there is a blinking yellow LED on the board. I dont know what I did or if the board is bad. Any idea's? I have googled and other than a links for blinking red LED's nothing about the GT2560 errors or LED's.

Any suggestions from the masters?

Your humble newbi
Realmoe/Micheal

[Inferno]

Are you sure you have the LED display and LED input connected correctly?
You shouldn't have so many symptoms unless something is swapped wrong.

[Hedobum]

I'm having much the same problem.
I recently upgraded my board on the A8 and it's been quite the adventure getting things sorted, I must say. Tore the thing down to frame (had to redo the bed carriage and other adjustments) and started from square one. First the fans weren't working, then the Z-axis was giving me all kinds of grief, now I can't get the display to work.
I have the LCD2004 (of the Melzi 5 button variety) and I uncommented the #define REPRAP_DISCOUNT_SMART_CONTROLLER as it says but I get nothing. No blocks. No backlight. Screen is blank.
When I unplug the patch cable or plug it in, I can faintly see what may be blocks but it's very faint and only momentary. The display was working fine (aside from the stupid 5 button navigation) when I unplugged it from the old board but it doesn't care to fire up for me now. Checked the cable...appears fine. No potentiometer on this display, so no adjustments to make mechanically. As far as I know, I've entered all the pertinent info to Marlin...

//LCD and SD support
//#define ULTRA_LCD //general LCD support, also 16x2
//#define DOGLCD // Support for SPI LCD 128x64 (Controller ST7565R graphic Display Family)
//#define SDSUPPORT // Enable SD Card Support in Hardware Console
//#define SDSLOW // Use slower SD transfer mode (not normally needed - uncomment if you're getting volume init error)
//#define SD_CHECK_AND_RETRY // Use CRC checks and retries on the SD communication
//#define ENCODER_PULSES_PER_STEP 1 // Increase if you have a high resolution encoder
//#define ENCODER_STEPS_PER_MENU_ITEM 5 // Set according to ENCODER_PULSES_PER_STEP or your liking
//#define ULTIMAKERCONTROLLER //as available from the Ultimaker online store.
//#define ULTIPANEL //the UltiPanel as on Thingiverse
//#define LCD_FEEDBACK_FREQUENCY_HZ 1000 // this is the tone frequency the buzzer plays when on UI feedback. ie Screen Click
//#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 100 // the duration the buzzer plays the UI feedback sound. ie Screen Click

// The MaKr3d Makr-Panel with graphic controller and SD support
// http://reprap.org/wiki/MaKr3d_MaKrPanel
//#define MAKRPANEL

// The RepRapDiscount Smart Controller (white PCB)
// http://reprap.org/wiki/RepRapDiscount_Smart_Controller
#define REPRAP_DISCOUNT_SMART_CONTROLLER

// The GADGETS3D G3D LCD/SD Controller (blue PCB)
// http://reprap.org/wiki/RAMPS_1.3/1.4_GA ... with_Panel
//#define G3D_PANEL

// The RepRapDiscount FULL GRAPHIC Smart Controller (quadratic white PCB)
// http://reprap.org/wiki/RepRapDiscount_F ... Controller
//
// ==> REMEMBER TO INSTALL U8glib to your ARDUINO library folder: http://code.google.com/p/u8glib/wiki/u8glib
//#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER

// The RepRapWorld REPRAPWORLD_KEYPAD v1.1
// http://reprapworld.com/?products_detail ... =1591_1626
//#define REPRAPWORLD_KEYPAD
//#define REPRAPWORLD_KEYPAD_MOVE_STEP 10.0 // how much should be moved when a key is pressed, eg 10.0 means 10mm per click

// The Elefu RA Board Control Panel
// http://www.elefu.com/index.php?route=pr ... duct_id=53
// REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARUDINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
//#define RA_CONTROL_PANEL

Are the pinouts different for this type of LCD2004 display? I would imagine not. I've been going through page after page through Google and this is about the closest I've seen to my particular situation. Am I fated to wait for a better display to ship in? I've about given up at this point...but then I said that back with the Z-axis issues.

Is anyone still interested in posting a solution here?

[mg_james]

@Hedobum:

Did you see this one:
http://reprap.org/wiki/RepRapDiscount_Smart_Controller

This seems different from yours!?

[mg_james]

...and I found another one:

https://forum.repetier.com/discussion/1 ... and-5-keys

Maybe that helps!?


Could you imagine to change display to:

SMART Controller Display:
https://www.geeetech.com/reprap-lcd2004 ... v57k66r0r0

That's the one I use...
And I also have the same Rev. of Controller board you showed in your images.

With these the Marlin setup (Marlin.ino etc. pp) must work (I use Arduino 1.0.1 for uploading!).

[mg_james]

...just another addition...
(quite cheap)
http://www.ebay.de/itm/Geeetech-20-4-LC ... Swd4tT4rPe

[William]

...just another addition...
(quite cheap)
http://www.ebay.de/itm/Geeetech-20-4-LC ... Swd4tT4rPe

Thanks for sharing.