I recently bought an australian made mig from ozito. it's cheap and..well it's cheap just like sip and cosmo welders this one source it's wire feed supply from the dc output of the welder. Hence, it suffers the same fate that plague all sip and cosmo welders - nasty unstable arc due to inconsistent wire feed..the poop weld At first i'd brag about how easy to fix it by feeding an external psu (transformer mod) to the input supply line of the feed board - piece of cake eih? At first run the motor spins angrily like it's being fed the whole 24 volts, so i thought maybe the controls are all the way up. And to my surprise it was not even halfway the knob! Anyway i turned the knob a bit back, a little more and then all the way down..still it spins like hell! Took off the the external psu then re-connected the old line. then it sprung back - speed adjustment was working on all settings. did another try on the mod and the same thing happened. tried it a couple of times and same thing happens, i even tried several supplies just to be sure but still it persisted.
i have a good understanding of electronics from reading schematics, identifying parts and circuit concepts. i know what i'm looking and that's why i am all baffled!
maybe someone here can give me an idea how to deal with this..i really am getting frustrated
i have a good understanding of electronics from reading schematics, identifying parts and circuit concepts. i know what i'm looking and that's why i am all baffled!
maybe someone here can give me an idea how to deal with this..i really am getting frustrated