I will say I have seen a number of Taurus revolvers over the past years, but I assume it's like a doctor who thinks all kids are always sick because that's all he ever sees.
I am sure not all Taurus firearms are breaking just because you look at them, but since I only see the broken ones that's the impression I get. I see a lot of brand new Braztech (Taurus, Rossi) guns that won't work, they are ssembled by minimum wage labor, not by people who know anything about guns. They often have some very attractive offerings, things I would love to own, different features or different chamberings that sound very exciting! Would I own a Taurus? Weeeeeell, maybe not.
As far as how to fix them, I typically tell the owner to contact Taurus directly since I can't get parts for them. And that is probably the number 1 reason I don't take in Taurus guns for repair: Taurus does not make parts available for the gunsmithing trade. If a Taurus comes in broken, I cannot get parts from any parts distributors. None available. I have to send it in to their service center, when I know I could fix it if I could get parts.
The other thing that drives me crazy about Taurus is that they have no parts for older guns they produced. It may look like their current offerings, but it is a different model, so no parts from them. Since guns are durable goods, with expected lifetimes of 20 or more years, this is aggravating.
I faced the same with a PT38, pre-millenium, pre-B. Taurus did a silent recall on them
I'mnot sure if those were the ones affected by the lawsuit they had, but I ran into a similar issue with a pistol about 10 years or so ago. The gun got to them and they said it could not be repaired or returned and offered my customer the choice between a couple of newer models in their current line-up. The customer was a bit upset, but chose one that made him happy.