But actually, Astro's satellite signal is very strong and it is considered very easy to adjust, so it shouldn't be a big issue.
But then, do check the condition of the cable and the connector port. If it seems okay, then proceed to align the dish.
1) I recommend you tune any of these channels before begin aligning your dish, which are 411, 391, 702, 701, 327, 413. It doesn't matter whether you subscribed to it or not.
2) Once you tuned to any of those channels, go home>Settings>STB Diagnostics, and then go "Tuner" tab.
3) Ask someone to monitor the Strength % reading on Tuner 1 for you while aligning the dish. (unless you can see the Strength reading on your TV screen while adjusting your dish by your ownself)
Before you begin, perhaps you can start it easy by turning the LNB skew. If turning the LNB skew doesn't increases the Strength % reading, then only you align the dish. Just loosen the nut a little bit, enough for the dish can be moved will do. Don't need to loosen it until entire nut comes out (unless you want to dismantle your dish, lol). And then, align the dish by moving it left/right/top/bottom position slowly, move bit by bit. Satellite signal are sensitive, as either you get signal easily, or lose signal easily. So don't need to move too much at once, but in case you really lose the signal entirely (Strength 0%) while aligning, you can adjust it back one, don't worry.
Do try your best to make Strength reading goes as high as possible while aligning. Let say you adjust until 80%, do continue align, and then it shows 85%, continue align again, suddenly it drops to 70%, so you align back to the position you get 85% earlier. (Just like doing manual focus on your DSLR camera). Once you get highest reading possible, make sure the Strength reading maintains and does not drop while you are screwing all the nuts tightly. Done, and congrats, you are now an Astro installer/technician. Haha
Remember, safety first (if your dish is installed at your home's rooftop).
Lately I am getting pixeling occasionally. Pic/sound just break up momentarily. I suspected its related to signal strength.
I followed your earlier instruction of Home>Settings>STB Diagnostic>Tuner Tab>Transponder scan
The channel that I was using is Channel 1 M3 VL-10982 Locked Strength 66% only. The scan list show 13 M3A VL-12276 Strength 77% the highest. So I changed the Entry Point in Installation Settings Entry Point by selecting 13 M3A VH-12276.
However when I Goto Home>Settings>STB Diagnostic>Tuner Tab , it show
Line : SAT:11682 Mhz V/L Locked
xxx Tner Diagnostic Info xxx
--No Info Available--
Question: Why is the connection on 11682 Mz instead of 12276 Mz that I have selected?
For Aligning the Dish, you indicated "Before you begin, perhaps you can start it easy by turning the LNB skew."
How to you turn the LNB skew? Where is the LNB skew?