hotpoint mistral 8956p temp fault

Hi chaps
i wonder if anyone can help me?

i have a hotpoint 8596p with a cold freezer , and a warm fridge
here is some futher info

1. fridge temp = +22c – freezer -18c
2. door seal ok
3. all dust removed from bottom,
4. fan on rear nr compressor running constantely nice and clean
5. door switch ok, and tried bypassed
6. temp sensor with green plug reads 3.1k ohm out of circuit
7. temp sensor yellow plug reads 3.1k ohm out of circuit
both decrease in ohms , when heated or warmed. i presume is is an indication of working ok ..?

8. fan in bottom f/f comes on for about 10-seconds then stopswhen the motor come on however if disconnected and powered directly from 240v it run ok

9. all connection in freezer behind panel removed, sandpapered, and switch cleaner and replaced.

10. motorised flap in fridge top left rear of bulb housing , working
11. compressor seems to power up and feels like its turning, gets warm
12. had been defrosted for 48-hours
13. no kinks in capillary tubes .
14 was working fine one day the next it wasent .- no warning.
15. definetely 240v ac on fan connection ..
16. bulb removed.
17. vents and drain holes cleared
18. fridge level
19. found and fixed 3 dry joints on top PCB ..
20 set temp on display and used buttons to store ..

does anyone have any ideas what else i can check ???

someone mentioned this model has 3 temp sensors ..

1 on the evaporator cable tied to it .. yellow plug
the 2nd being longer wire passed through plastic , and located near the fan , green plug

and some one mentioned , one near the bulb ???? is this true or not

anyway any ideas would be most welcome its driving me mad ..

Thanks
Paul