I use the 180 Watt Ashdown EB 15'' combo, and, IMO, it sounds much nicer than the Orange combos and heads that I got to try at the London Bass Guitar show earlier this year. The Orange amps all sounded quite 'harsh' to me and I couldn't seem to dial that out. The Ashdown sounds much warmer and rounder too me.
If I were in your shoes, (and I sort of am, considering I am in a band in the UK that only plays pubs / bars) I would either look at getting the Ashdown repaired by somebody else, or simply buying a new Ashdown combo. The 180 Watt versions are still in production, with either a 15'' or 12'' speaker arrangment. You might also want to look at some of the higher end combos as well, like the MAG or ABM series if you also want a bit more bang for your buck
