I've got standard sky but am thinking of getting another box for HD, will i have to have a new dish?
I don't think so. They will need to install a quad LNB if you don't have one already.
I've got standard sky but am thinking of getting another box for HD, will i have to have a new dish?
shocking ? No not really
#1 is understandable, likewise #2
and #3 you should have asked him to tack it before he left if it bothers you.
Why did he need to change the dish?
The LNB (end part of the dish) is what you would need, if you needed anything new.
They almost always replace old dishes these days. The newer ones are much better in poor weather.
Not to mention they're generally smaller, and less of an eyesore. The company I work for went from 90cm dish to 84cm curved dishes; and we regularly end up having to replace the older dishes to improve QoS not just the LNB.
To be fair issues with the alignment/LNB/cable tend to cause us more issues than the dish though; but that's also because we tend to have to be a bit more picky in terms of signal quality due to some of our clients and the datafeed they pull off.
You're right when it comes to Sky though, they're a mixed bunch. Our original install of Sky Digital was absolutely fine, but when we shifted to HD the engineer did such a poor job of checking the cabling and setup over to ensure everything was running properly, that whilst signal quality was about 80% on the first input, the secondary feed quality was only about 20-30%, which was causing breakup etc
I realised the next day (it was installed for the family, although I pay for it, I dont watch much TV) and immediately called them up to get a revisit. Needless to say a complaint was lodged over that one, as it was such an obvious issue, and it should have been checked whilst the engineer was onsite, I don't accept that sort of issue without a revisit from our engineers, let alone one I'm paying to attend.
we pre-drilled all the holes and left cable rods poking through them <snip>
Some Sky engineers are great, some are useless. As with most companies really.
I'm wondering why he changed your dish too?
Was there any need?
Also why didn't you kick up a fuss at the time? I'd have got him to make it neat.
When they came to my place I watched them like a hawk!

<Insert generic chav = average Sky Customer comment>One sad thing I've noticed visiting 1000's of homes during my time as an installer is the fact that 80% of people live like pigs. Some homes were so bad that I felt like wiping my shoes after leaving the house.