Apparently not, but here's some advice.
1) Some power outlets are not powered at all times. Some only work whe the unit is switched on. Could this be the case? ..
2) As for repairing it, if you can fine that piece thrlugh some outside means unknown to me, then if your skills are sufficient it should, be an easy task to replace it. If f you have to send it out then it could become costly. In either case, that part may no longer be available.
3) If the tuner works otherwise, I'd just let it go and find another means to power said other device.