Nieksas
(Nieksas Jokubauskis)
41
Maybe its because its starts catode from the side?
Nieksas
(Nieksas Jokubauskis)
42
Changed the tube, and it worked like a charm
25% of power cuts like hot knife though the butter 
I will not try to go back to old LPS, done enough modifications for now 
Thanks everyone for help 
I think tube was damaged or had something stuck inside
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