Martin: if you like XT's goodies, don't get LT. IIRC for AA5 many of those were integrated on PCB now, so unlike with AA4 LT, you cannot get anymore LCD screen & remote control working with base LT.
Though it will probably work for load tests only. But if you intend to have unit for long term use then probably another XT or Pro needs to be bought. From description it sounds not exactly RMA case, but you may try to PM Shoggy, maybe you can send unit to them for some cheaper fixing instead of new one purchase.