Hi Folks, i have a real dillema here and it all revolves around a Chinese made 3-1 machine,welder,plasma cutter and stick welder.
This machine uses hf start for the plasma and tig but as is per usual the hf start doesn't work.
it uses a cockcroft -walton multiplier to work the hf start .This circuit has blown up two of the capacitors and there were two zenor diodes soldered together beside the other two . these were also blown ,
What I would like to know is how I can modify this circuit to make it both work ( which it has never done,it's actually new ...) and be more reliable.
Unfortunately the zenor's markings don't relate to anything at the local electronic suppliers and the capacitors are marked 102 -2kv .
Two capacitors were blown apart also.
I would guess this is the same board as used in practically all these sorts of machines but because the manufacturers pretend to not understand English I can't simply get another PCB. So it looks like I have to figure this thing out and get it to work.
Thanks in Advance.
This machine uses hf start for the plasma and tig but as is per usual the hf start doesn't work.
it uses a cockcroft -walton multiplier to work the hf start .This circuit has blown up two of the capacitors and there were two zenor diodes soldered together beside the other two . these were also blown ,
What I would like to know is how I can modify this circuit to make it both work ( which it has never done,it's actually new ...) and be more reliable.
Unfortunately the zenor's markings don't relate to anything at the local electronic suppliers and the capacitors are marked 102 -2kv .
Two capacitors were blown apart also.
I would guess this is the same board as used in practically all these sorts of machines but because the manufacturers pretend to not understand English I can't simply get another PCB. So it looks like I have to figure this thing out and get it to work.
Thanks in Advance.