termistore blew up - Hotend out of mind. -solved

[Erdie]

Hi there,

the termistore in the hotend blew up when i was stopping a print.

Bought a new termistore and change the firmware to 11.

After starting the print, Repetier Host and the display showed the temperature rising to 144/200° there it stayed but the hotend kept on heating.

I realized that as the hotend was smoking.

Then I bought a original hotend from geeetech, changed the termistore value back to 1.

I have startet pla pre heating, and the display stopped again at 144. Hotend kept heating.
Temperature changes to 144 were displayed.

I use the pro w firmware without any changes from this forum and controled the termistores with my multimeter. they seem all to be ok.

Dont know how to continue, please help.

[Erdie]

Changed the pins of the termistore from the second hotend to the first.

seems like i have burned something.