Stb: Vu+ UNO 4K SE
Firmware: Openvix 5.2.039
LnB: Inverto Unicable I / II LNB 1/24 - IDLU-24UL40-UNMOO-OPP
Setup: Tuner A (Connected to tuner B); Tuner B (is where the coaxial cable is connected).
Satellite: Hispasat 30ºW

On my Vu+ UNO 4K SE I cannot get the signal better than 80% 80%.

If I connect my VU+ ZERO 4K to the same coaxial cable end, I immediately get 100% 98%.

What may be the problem? Faulty tuner on my UNO 4K SE?