How much does Astro charge to replace their decoder due to lightning strike?

Both decoder at home can turn on but seems like they cant receive feed from the Astro dish..

RM65 for Technical Service Fee, regardless of how much your monthly subscription is.
Last time they use to differentiate, like for those who RM100 and above, can get either lower or no fees at all for any technician visit. But now no more already.
They don't care how much you pay for Astro per month.
By standard, as long you tell Astro to get a technician to come your house and drink tea (I mean, fix technical issue), you'll be charged for RM65 to fix any technical problem, regardless of small or big.

Unless for certain "special cases", they might waived the fees for you (e.g. under certain warranty, or installer just came not long ago to fix an issue but another issue arises).
That will be case to case basis. But usually no la.

they charge U RM60.00 for installer cost