Unless you're in a very heavily built-up area, this "problem" might simply be that your dish is slightly out-of-alignment. It's easy to slightly turn the responder in small increments until you get a better signal strength
Thanks, dorizdazed. But the technicians would have seen this out of alignment factor and correct it. It's not that this problem exist from the very first day of installment. It came as the weather in my area (it's in the kampung surrounding) worsened due to strong wind, rain, etc. Not that the reception goes blank totally but that usual layers of white, grey, metal box-shaped graphics shown all over the screen with metalic screeching sounds that come with it. This only happens on certain channels like Hallmark (don't remember the other) but not starworld nor fox. As the weather improves, thought this would disappear but it didn't and it worsened with time. So, I guess I'd just have to switch to Telkomvision later.
My monthly fee is Rp. 197.000 for Indovision.