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Skory sstc not working.

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martisxxl

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Hello, i am doing this mini solid state tesla coil :
PCB:
https://www.bis0uhr.de/index.htm?ht...e/tesla/english.html%99https://www.google.lt/
SCHEMATIC:

i think i soldered everything properly, checked like 5 times. I even resoldered the schematic on another board, but a lot of the parts were the same.
When i try to turn the tesla coil on, it shorts out ( I see sparks, fuse goes out), and the bd242c and one of the irf3205 transistors get really hot.
What could be the problem ???
Could it be the ne555 chip because i changed a lot of parts into new ones ( transistors, zener diodes), but i have not changed the ne555 chip.
I was using 12v acid lead battery.
Also, could it be something with the L1, L2 and TR1, because i am not sure i soldered them properly.
Sorry for my spelling and thank you for the answers.
 

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