Hi Forum members,
I navigating more or less blindfolded, since Hugarian to me is just a undersyandable as Chinese.
In my quest for repairing the controllerboard for the welding machine in above tema line, Ive searched for documentation/diagrams.
I stumpled across http://elektrotanya.com, aquired a Log In, downloaded the manual, and started fault finding procedure.
Problem:
Whenever Welder were place in ON position, gas flow and weldthread commenced immediately and continued non-stop.
Fix.
Controller circuit Bi-board (containing the 3*NE555 timers), U28 NPN BC546B leaking BE reverse bias, replaced with BC639.
Result:
My cousin Arne a happy camper, he had inquired for a new controllerboard from ESAB - estimate 900$
Now easily fixed with a 1$ replacement.
Thanks to http://elektrotanya.com library.
Best wishes
Leo,
Sziasztok!
Na ezért (is) jó a TANYA, még spórolásban sem utolsó.. :super:
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Hi!
We are pleased that we were able to fix it. Fruitful work.
Thank you for the repair instructions.
All the best!
Kalex
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