Vu+ Zero 4K Tested for You !!!

hi I have a problem with my demodulator vu + zero 4k when I turn on the demodulator it works quickly but after 3 minutes it becomes very slow and inzapping knowing that I changed all the images but I think this problem is to back to heat ..
so how do I change the thermal paste

can anyone answer me ?
 
Thank you for ur subject..
I have this box zero 4k blackhole 3.0.8 stable faster...
But i found a prb (( Multistream chaines in Eutelsat 5w with 0% signal !!! ))
Can u send me plzz if we have à solution..
 
My zero 4k is dead hdmi port restart all time signal of hdmi off pls sheme diagram on web working good signal Lnb ok too
only hdmi port problem
 
Is the signal reception power of this device's onboard tuner as good as more professional models such as the Duo 4k with modular Tuner? Has anyone tested and compared this?
 
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