ANET - Alternative Thermistor ADC Input

Helo RepRap Forum

I've got an Anet and recently i fried my thermistor Input of the hotend by accident.
I know that because i measured the 4,7k pullup resistor , saw that it was faulty (1,6k approx), replaced it and in the end the temperature was still wrong. I even recreated the thermistor schematics "outside" (on a breadboard) and it was still wrong. Here are the schematics: [raw.githubusercontent.com]

I flashed Skynet 2.3.2 and changed the Pin-Layout so that the heatbed and hotend-Thermistor change places (analogInput 6 and 7). So for now i can print with the heatbed disabled. But I want to fix this without replacing the board.

To my understanding there is no analog input (A0-A7) available, with whom i can read the temperature. Tried A3 and A1 but it failed because:

A0 = SD card
A1-A4 = LCD
A4 = LCD + LED D1
A5 = Z_Enable
A6 = Heatbedtemperature
A7 = Hotendtemperature (this on is fried)

Can anyone help me out of my dilemma?
Is it possible to combine Z_Enable with XY_Enable and use the free A5 spot for the thermistor?

Thanks Thomas