I have a Uniden PowerMax 5.8 GHZ two-phone system

Basically yes, check where you bought it they may have 'defective' units (bases) that they might swap out with you. If time isn't a factor, contact Uniden, and tell them what happened re: getting shocked (hopefully the phone had a chance to dry out prior to you using it); if neither of these avenues work, you'll have to do an internet search to see what's available. Give the amounts of time and travel, it may be cheaper to replace the whole phone & base.

Hope this helps.