[TheForge] Trouble shooting welder

[Grover Richardson]

Sounds like your power control is fried.  If the new tip (as someone else
suggested) doesn't work, check the output triacs.  In a high end unit, the
triacs control the power going to the welding tip.  In the less expensive
ones, you just select a switch that goes between transformer taps.  We
recently had a problem similar to that here at work that I had to work on.

>*>-----Original Message-----
>*>From: theforge-bounces at mailman.qth.net 
>*>[mailto:theforge-bounces at mailman.qth.net] On Behalf Of 
>*>PlumDon at aol.com
>*>Sent: Wednesday, January 11, 2006 2:00 PM
>*>To: theforge at mailman.qth.net
>*>Subject: [TheForge] Trouble shooting welder
>*>
>*>
>*>Hoping for some advice on a problem with my very old, much 
>*>used Hobart 250  
>*>mig welder. Whenever I pull the trigger the wire burns right 
>*>up to the nozzle  
>*>with a flash of blue light. I have tried making sure I have 
>*>a good ground and  
>*>filed clean the copper grounding clamps. But that didn't help.
>*> 
>*>Kindest thanks for any suggestions.
>*> 
>*>Don Plummer
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