Octagon SF8008 4K Supreme Tuner fault

I recently bought an Octagon SF8008 4K Supreme, the one with 5G wifi which is essential for me. I got it from abel-shop-eu. This one has developed a fault with the T2/C tuner, tuner B in this case. Every 20 minutes or so I get a picture and/or sound dropout glitch for a second or 2, very annoying... especially on recordings. I have tested my antenna with other boxes and direct to the tv and that is 100% fine. The other tuner which is connected to satellite works perfectly, HDMI cable and output is fine...

Any ideas? Is this a common fault or just a bad box?

Thank you.

I see the new model Octagon Supreme V3 is coming with different tuners. There must have been something wrong with the earlier versions!

I am trying to get them to swap mine for a twin sat version...I've given up with the T2 tuners for now.

are you sure? V3 is not released yet and I read they are going to use different tuners.

What about V2? There are a few forums that say the tuners on the Supreme are not as good as the ones on the original SF8008? The DVB-T2 tuner on my Supreme does not work well.