Check your machines fuses. For location of fuses look into your owner's manual.
I have a 302 miller trailblazer and it has power to a grinder then it shuts right off the other problem is it has no welding power ether
I'm having the same issue. Power to the grinder last about 45 sec. And ther welder welds way to hot like its cranked all the way up.
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SOURCE: I have a Miller 225G plus. it idles up good and
Take off shroud, look at where the positive lead hooks into the transformer. You may find that the wire has melted, If you are lucky, you can loop it tnough to make a fresh connection. (also check the negitive)
SOURCE: Miller Trailblazer 302 Gas, will
Check the circuit breakers, one may have tripped or failed, such as CB4 which would also impact generator voltage output and since it controls power to the 24 control system- the first one to check or service. If you can access the rear terminals, check the voltage in operation at both lugs- if you do not get the same voltage reading at each lug of CB4 measuring them one at a time to chassis ground, the breaker is tripped or faulty .
CB1 is inline with the 240 VAC outlet and is ahead of CB2 and CB3
CB2 and CB3 are inline with the 120VAC outlets
In each case, switch them off then back on.
If you have the GFCI option, it may have been tripped by unsafe conditions.
SOURCE: miller 302 remote wont work
if u want to use grinding machine, take power from auxillary source, it should be in machine,single phase supply. remote and grinder power do not have anything with this problem.
SOURCE: trouble shooting miller trailblazer 302 engine powers out when air arcing
Blow cabinet clean of dust and check connections in cabinet and handle. first, Then check the wires to the step up solenoid and make sure they have sound connections and that solenoid is mounted securely. If you do much outside at night, have someone watch with the cabinet open and see where it sparks when the engine drops speed. Int he dark, even small sparks you would not see inthe daytime or the shop apper reasonably well.
Weld Cable (+) To Feeder lead cable.
Work Cable ( - ) To Workpiece Weld cable and work cable connections to power source (DCEN/DCEP) are dependant on wire type.
Since feeder is not polarity sensitive, there is no need for an electrode polarity switch.
Voltage Sensing Clamp Connect voltage sensing clamp to
workpiece.
Gas Hose to regulator.
Gas Cylinder to regulator.
Use of shielding gas is dependant on wire type.
You are all set up to weld.
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had same prob but only power for 30 sec pulled cover off of cpu above stater found a harness unplugged in the middle of the cpu board
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