Should repaired equipment be stated in the ad??

Maybe we need something like Vehix.com where all repair shops report repairs done. Just put in make, model number and serial number and you get a complete fictional, fabricated reassuring history. Or you get a dirty laundry list of replaced resistors and caps and tubes and face plates.

I just got my vintage KT 917 tuner back from Stereo Surgeons complete with before and after specifications and a professional evaluation. If I were to offer it for sale, I would not attempt to conceal this info. In fact, I would consider it a selling point.

Like I pointed out above, there is not necessarily a negative stigma attached to service history. Vintage equipment needs caps replaced, tuners need re-alignment, old tube gear often requires cleaning of oxidation and can benefit from new wire.
Do you consider these to be repairs or maintenance? And what about mods? I see many ads crowing about mods having been done.
If it was factory R&R what is the problem? Items that didn't get caught by QC the first time through are returned to the factory for individual attention upon failure. These, I suspect, leave the factory better than new having received individual scrutiny.

Why so anal everybody? I buy used stuff aware that it is as likely to fail as new gear. The difference is that I bought it for hundreds or even thousands less than the original price. That leaves a lot of room for repair dollars in the unlikely event that they are needed.

Another point I might make is that most sellers on this site are overly concerned about their reputation and will bend over backwards to accommodate an unhappy buyer. As in any other area of transaction, you will find a degree of risk, but it seems that many of you are over-reacting to a problem you haven't even experienced.

Remember that you are doing this for fun. You have enough other things to worry about, don't you?