Question about Welding Tools
Could be. Could also be a shorted winding in the transformer. I have seen the aluminum windings burn and melt on some welders.
Over the years of messing with welders I have hardly seen many bad diodes....it is usually something else.
To check the diodes, you will need to disconnect them inside and use an ohm meter. Set your ohm meter on a low resistance setting and check them in both directions. If you check a diode and it is like you touched the meter leads together (dead short) them yep it needs replacement. When you test them you should read more resistance one direction than the other, if it reads like it is an open circuit like you didn't touch the leads, then test on a higher resistance setting, if you never do show a reading (infinite resistance) then it needs replacement.
Posted on May 24, 2009
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Posted on Jan 02, 2017
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