On 14/06/2019 15:40, Jim GM4DHJ ... wrote:
OK took the cables out of both satellite receivers and checked for a short
in all four cables....none was found ....took off the old LNB and noticed
the radome had a crack in it and pushed my finder through it and found it to
be full of water.......fitted an identical new LNB and wired up one receiver
and switched on...no shocks....wired up the other receiver and switched
on...no shocks...... ....checked both receivers all channels now working
vertical and horizontal......so much for all your theories.......ha ha


I said simply: "Replace the LNB".

Bill