Fluance RT85 and Mani2 both lost left channel help?

[JeffRome2023]

I suddenly lost my L channel from my turntable. I thought it was the headshell connections and initially after I recrimped them, it worked again for a few weeks. Then lost that channel again. I replaced the Mani 2 with a Pro-Ject Tube Box S2 preamp and a new Technics turntable (I was ready to upgrade anyway) and every thing worked great. So I got a new headshell for the Fluance turntable and left channel still not working with Pro-Ject preamp. AND I tried the Mani 2 with the new TT and it also lacks L channel.
Any ideas? Both the Mani 2 AND the Fluance TT lack L channel. Did the amp go bad and knock out my TT? Vice versa?