could well be faulty capacitors on the power unit.
open the box up if the capacitors which are tall round things usually blue or brown with a stripe going down the side are domed or bulging at the top it means the have blown. this is more common on the sky+ and sky+hd but the drx100 is one of the first digibox's that were made so about 10 years old so would most proberbly be your problem
jon, October 2008
