[TheForge] Thermocouple on mig welder

Tue Oct 21 21:09:00 2003

Just checked the resistance on the machines Tc. and its 15k, that is about
right isnt it? Might be a bad board? this is the third board Ive had in it
since new.....

----- Original Message -----
From: "shannell" <[email protected]>
To: <[email protected]>
Sent: Wednesday, October 22, 2003 10:27 AM
Subject: [TheForge] Thermocouple on mig welder

> My mig has shut itself down with the overheated light on, this is from a
> cold start. I tried short circuiting the thermocouple connection to the
pcb
> board but still no go. Does the board look for a certain amount of ohms to
> work?  Can I put a resistior in place of the TC.? I put the multimeter
> across another Tc. I have that is used for measuring temps from a
multimeter
> and its 9 ohms at room temp. I dont really want to replace the Tc. on the
> welder, it looks like its buried in the winding and Ive never overheated
the
> machine, its 250 amps which has plenty of duty cycle for me so I dont mind
> not having this "feature"...
>
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