View Full Version : 135 Handler issue
08-01-2008, 11:10 AM
Thanks for your help. I have a hobart 135 welder and i have never had any issues with it. However when working on a project during the winter (it was really cold in garage) the wire feed motor stopped working. I waited for a warmer day and it still will not spin.
What do I do? Anything I can check on the machine or is the motor bad?
08-01-2008, 06:02 PM
If the fan motor is running, and pulling the trigger doesn't strat the feed motor, the problem is either the feed motor itself, the connection from the motor to the PC board, or a component on the PC board.
There are no fuses in the circuit according to the wiring diagram in the OM.
Give customer service tech support a call. They'll help you out.
Some of the older HH 135 and HH 175 units have had a problem with component Q1 (motor drive transistor), on the control board, failing. I know Hobart addressed this issue on later model 135 and 175 units by upgrading Q1 to a larger size transistor.
If you do a search for transistor you'll more than likely find info on this and some helpful info that Hobart Expert Darrell provided.
I've been told a replacement control board for the HH 135 or HH 175 contains the upgraded transistor.
BTW, the way I read your post, I am interpretting it to mean that the drive motor stopped while welding? I just want to make certain the voltage selector isn't set to purge or between taps on accident. Due to the design of the unit the wirefeed motor will only operate with the voltage selector set exactly to one of the the 4 output range selections.