My chinese neon bulb died.
I opened these bulbs (from other manufacturers also) when they
die and it always seems to be electronics malfunction.
Filaments are always ok.
So I decided to fix this one.
Two resistors 22R, two transistors E1300x ,main cap 6.8 uF 400V ,four diodes
found dead and I replaced them.
I replaced transistors with (unknown) C4106 I found in old PSU.
Bulb now shows signs of life but it don't work. I didn't have 22R so I put 100R
and that may be the problem.
Can someone tell me how this schematics work?