I see you opened another thread about this. From my experience, Mesa products have a good track record and warranty. Like anything else, failures can happen. If your WA is an older unit, the risk gets higher and parts are being discontinued. For me, it was worth it to get it repaired.
By the way, welcome to Talkbass and i'm sure you'll get a lot of suggestions on what to purchase next
By the way, welcome to Talkbass and i'm sure you'll get a lot of suggestions on what to purchase next