To all the sifus here... I urgently need ur help...

I am using Astro B.yond PVR Decoder with 2 input at KL
My parents using Astro B.yond Decoder with no Record and 1 input at Melaka

The situation now is:
I had brought back my active Astro PVR Decoder with 2 input from my KL house to swap the Decoer with my parents house Decoder thinking that I can use it here in Melaka with just 1 input.

After I had installed the Decoder and the cable connected to Sat1... the timer show correct time, browse TV channels show correct channels but it still no picture and a "No Satellite Signal" icon shown in the middle of the TV.

I had checked at Home->Setting->Installation Setting->Satellite Setting and the signal strength is 126+- and a "locked" word at Sat1. Sat2 of course no signal as no cable plug in.

My question here is, is Astro PVR Decoder locked to the Satellite Dish? Or is it both Decoder using different kind of cables? Anyway I can use my KL Decoder but using Melaka setup?