depends on your centralise system whether is HD centralise or non HD centralise system.

For PVR decoders:

non HD centralise system you may install 2 way splitter to split the cables (one for recording, another for viewing)

If it's HD centralise system, you may need to buy an equipment called stack de-stacker from astro / astro installer for your pvr decoder.

the function of stacker de-stacker is also to split to 2 cables.

which state are you currently staying bro? i got contacts that can help you if you're in KL area.

it could be your wiring problem OR it could be your centralise system problem. need to check with your management.

which state are you currently staying?

SatCR is not workable for centralise system. only stacker de-stacker is workable for HD centralise system.

but since the beginning of this year, there's this new technology called dCSS (is a type of LNB) that can replace on the existing centralise system, and after changing it, every residents only have to do settings and they are able to receive HD signals. However, for PVR users, they only have to add 2 way splitter instead of stacker de-stacker.

i don't mind sharing the contractor contact (only klang valley area), just PM me. This contractor i know has been maintaining and doing astro and antenna centralise system in KL area for more than 15 years.