Abergh

Hello I'm new to this forum but I'm really desperate now.
Here's my problem: I have a Kaon K-220 receiver with a single LNB (Inverto IDLP-40SL+) and a 80 cm dish, pretty basic but I just use the dish for a few channels on Eutelsat W2 as I also have cable TV.

This just worked fine until I went on holiday and removed the dish just in case there would be bad weather. When I hooked up the dish again after 2 months it didn't work. The receiver says there is no signal and the signal strenght is 15 % no matter where I point the LNB. Quality is of course zero. I tried another LNB in case something was not ok with the original LNB, but no change. I also tried another cable but again there's no change.

I'm trying different settings in the set-up but it doesn't seem to help. I think the settings I should use are these as I have no need for controlling multiple LNBs:
C/Ku Switch - None
LNB freq. - Univ. LNB 1
C-LNB Freq. - na
LNB Power - On
22 Khz - na
0V/12V - 0V
Tone Burst - Off
DiSEqC - None

Any ideas anyone? I would really appreciate your help.