Hobart Mega-Flex 650 RVS does not work in MIG mode

Ignoramus24189 · 2008-12-05T01:10:52+00:00

I have this Hobart Mega-Flex 650 RVS, which I am trying to test. Ithas a Hobart 25 wire feed, which I actually like a lot. I rewired this welder to 240v three phase.The welder works great in stick mode, but refuses to work in MIGmode. The welder has two Amphenol receptacles, 19 pin (Wirefeed 1) and 5 pin(Wirefeed 2). The Hobart 25 is plugged into 5 pin receptacle (Wirefeed2).1. Stick mode works great. No problems. 2. There is a Stick/MIG/TIG switch on it. If I switch it to MIG (orTIG) the voltage indicator drops to zero immediately. 3. Switching Local/Remote output control does not help.4. Switching Local/Remote voltage sensing does not help. 5. I tried removing the plug and messing with the receptacle, somehowI was recalling that pins A and B should start welding if shorted. Itdid not help.6. If I press the button on the MIG gun, the wirefeed engages andstarts feeding wire.I have a feeling that I am missing something simple and the welder isactually fine. I do not have a manual, which I will order if I do notget a good answer. Any ideas? What am I missing?>

Dec 05, 2008 20 Replies

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AJ 8 years ago

replying to Ernie Leimkuhler, AJ wrote: I have one for sale if interested here At Helidon Spar SE Qld.It was in shed as a walk in walk out situation. I have not the power to run it or know how. Money back garentee if not working but feel it would. can ring me on 0427420805 if interested. or mail me and I will send a pic.

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