Weird problem 4 way diseqc switch

[ts]

I have a 4 way diseqc switch connected to 9E-13E-19E-28.2E
with Hotbird as the main LNB on the dish.
I have a problem with one Hotbird transponder (11585v). This gives perfect signal if connected directly but through the switch the signal drops considerably. All other hotbird transponders are okay on the switch as well as direct connection.

I tried to change the port for hotbird on the switch but have the same problem on all the ports. Apart from this transponder all others are okay.

Anyone has any thoughts on this weird issue?

Thanks in advance
TS

[inherent]

hi m8,instability in switches and joints,are usually at specific frequencies,caused by unwanted feedback in the circuitry,check any joints or connections,this is common fault if you have any tape joints or such ,in the cables,and could be INHERENT in your switching unit