Hi
I leave my BT Homehub on 24/7. Just like my mobile phone a Set Top Box (Sky) ect.
I am trained by Cable and Wireless, NTL, Virgin Media and now with o2 and have a wide experience of everything from STB, Land Lines, Mobile Phones and Broadband.
Set Top Boxes (STB) be it for Sky, Vision, Virgin ect. I would advise to leave on as signals are sent and received, updates of service and improvements downloads of your usage information for example Pay to View. You may notice a light scorching around the chip on the card, this is nothing to worry about a very light currant passes through the chip and it will get warm to the touch.
Like all electrical equipment good ventilation is essential for both safety and keeping the equipment in good order, keep vents clean and do not cover with other electrical equipment suck as DVD players. I give the fan of my tower PC and Laptop with both have fans as well as TV, STB a good clean with the Vacuum Cleaner.
Wi-Fi routers work on a low currant and as above easy to maintain and downloads can be received while I am asleep.
If you are supplied by fiber optic cable, mostly Virgin Media, unless you live in somewhere like Kensington/Chelsea you will have fiber optic to your nearest cabinet in the street. After the cab you will mostly be served using Coax cable which is copper, you can get an appointment for a network tech to try to speed up you BB speed by changing a few things or shifting the fiber optic a bit.
Something I have been caught out with is on a Land Line Phone, Ever heard of ring trip? normally caused by faulty extensions but once I had ring trip so I called a tech and said I could not cure it, knowing my home as he did, I was instructed to go to the extension in the kitchen that had an extension fitted to the skirting board very close to the tiled floor. I put a pencil in where you would plug in the phone, just enough to open the slots, then gently used the hair dryer to cause a drying flow of air into the socket. 5 minutes no ring trip. LOL. My fault for being a bit heavy with the wet mop. LOL.
Main problems with mobile phones other that drying them out after being down the toilet, Dirty keys or SIM card. Both should be cleaned with clean soft cotton, ideal would be Spectacle Cloth. If you are cleaning your mobile use something like Meths that is alcohol based and evaporates very quickly. Be Gentle.
Well I hope you pick up some tricks of the trade, or a little I never knew that. :o)
If I can help in the future just ask.
Can I point out that this site is full of people with a lot of knowledge.