Problem Replikeo temperature sensor

Hello,

I´m still working for a week to solve a problem but I can´t clear the issue.
My problem is I´m always getting a MINTEMP Error.
I have the Replikeo Prusa i3 kid (I bought it in december) with 1 extruder and Marlin 1.1.0-RC2.
My temp settings are:
#define TEMP_SENSOR_0 1
#define TEMP_SENSOR_1 0
#define TEMP_SENSOR_2 0
#define TEMP_SENSOR_3 0
#define TEMP_SENSOR_BED 1

#define TEMP_RESIDENCY_TIME 10
#define TEMP_HYSTERESIS 3
#define TEMP_WINDOW 1

#define HEATER_0_MINTEMP 5
#define HEATER_1_MINTEMP 5
#define HEATER_2_MINTEMP 5
#define HEATER_3_MINTEMP 5
#define BED_MINTEMP 5

#define HEATER_0_MAXTEMP 275
#define HEATER_1_MAXTEMP 275
#define HEATER_2_MAXTEMP 275
#define HEATER_3_MAXTEMP 275
#define BED_MAXTEMP 150

I´ve tested all temperature sensor settings but exept of 110, 998 and 999 I always get mintemp error.
With 110 I get a temperature of 300 degrees.

The thermistors have a resistance so I don´t think they are broken (especially respond because so both sensors (extruder and bed) equal).

Any Idea what I did wrong or what I could do?

Thank you very much.

BR
Georg

Does it matter in which direction the parts are soldered? (on the picture attached)

I ask because the left and the right are the same, but the font of the middle is reversed.

Here you can find all stl files to print backup Parts and mutch more important the configs with the temperature sensor values.

[github.com]

PS: It dosen't matter what is + or - on a sensor like this.

Edited 1 time(s). Last edit at 01/04/2016 06:05PM by DeathmannX.

Everything seems to be OK (configuration.h attached), hardware I have now split again and connected everything new.
I worked with LCD and without.
I worked with the power supply and without (only the arduino was connected to usb, no external power) (does that make any difference?).
The temperature sensor has about 100k ohms @ room temperature.

But it still don´t work.

Should I still buy a new Ramps board to give it a try it?
A new Arduino I already trie, did not help.

I have no good ideas any more :-(