Guitar amp

Bought this last week on a whim not working I did some research and found out on the DT 25 it’s usually because of valves and improper biasing , these are boutique and over 1000 when new and they are really among the best sounding amps from line 6 , I know it needs a 2 euro fuse for starters , can’t guarantee anymore than that but speaker alone worth 90 anyway even as spares it’s worth th asking also with due respect I won’t be entertaining comments about how much I paid for it as that’s immaterial there is time , travel and fuel costs involved etc , I only want to recoup my investment due to financial issues , near Trim / Summerhill behringer pedal basically new 20 euro Zoom G5 100 euro mint condition