Sanguinololu MOSFET hotend problem (no replies)

Hello everyone,

I've got problem with Sanguinololu 1.3a hotend MOSFET. Hotbed works great.
- there is 12V on hotend port,
- there is no GND on hotend port,
- after switching on in pronterface, there is 5V signal on ATMEGA 1284p;
- there is GND on MOSFET;
- there is 5V signal from Atmega on MOSFET GATE.

Everything seems to be ok exept pull up signal. On hotbed MOSFET there is 10k Ohm between GND and GATE , but on hotend MOSFET there is about 7,6k Ohm between GND and GATE. I'd soldered out the resistor but it's ok - 10k Ohm.
I've changed the Mosfet for the new one, but the same symptoms.

Please give me some advice what to check/do.

Thanks in advance