Sky +HD box won’t boot up. New Sky quad lnb all cables giving a strong signal, tested on alternate b

[AndrewHall]

Recent new sky engineer fitted quad LNB. All cables give a strong signal and tested on a different satellite receiver. 

[Mark39]

What do you mean by 'won't boot up'? Are you seeing an initialising' message?

[AndrewHall]

Hard drive runs for a few seconds then nothing. Nothing on screen. All connections work with alternate sat box so problem not with tv, cables, lnb, dish cables etc

[Exiled-in-HH]

You could try replacing the HD or just get a replacement second hand Sky+ HD box😉

[Mark39]

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@AndrewHall wrote:

Hard drive runs for a few seconds then nothing. Nothing on screen. All connections work with alternate sat box so problem not with tv, cables, lnb, dish cables etc

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Yes, it sounds as though the box has failed. You can buy a used, replacement box from ebay etc for around £30. Look for either a DRX890 or DRX895 model as they're the most recent.