Welding Tools - Recent Questions, Troubleshooting & Support
P-7 error in miller co2 welding machine
The P-7 error in your Miller XMT 304 CC/CV welding machine indicates that the input voltage is too high, causing the unit to automatically shut down. However, operation will resume when the voltage falls within the acceptable upper range limit (which is 15% above the applicable input voltage). Here are some steps you can take to troubleshoot and address this issue:
Check Input Voltage: Verify that the input voltage is within the specified range for your machine. If it exceeds the acceptable limit, consider adjusting the power source or using a different power supply.
Inspect Bleeder Resistors: The P-7 error is often related to the side output board, particularly the bleeder resistors. Ensure that these components are functioning correctly. If any of them are faulty, replace them.
Examine IGBTs: Inspect the IGBTs (Insulated Gate Bipolar Transistors) on the side board. Even if they appear fine, remove the output board and verify the protection diodes on it. Sometimes, an IGBT may have a damaged base that isn't immediately obvious.
Be Cautious: When working on the machine, be extremely careful. There are high voltages (around 325 volts) stored in the large capacitors, which can be fatal if mishandled. Always wear appropriate protective gear and follow safety precautions. The complexity of the device may require expert assistance.
Burned resistors
I have the same problem with the Mighty Mig...Did you find these resistor values?
Weller tcp 1iron overheating
There is a bimetalic strip and a magnet that can get stuck in the closed position.
Tapping the iron on the end of the bit can release it otherwise a new element will be required.
763 bobcat hdy and travel locked up when starting
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwivi_HHuK6DAxVCC3kGHUEmCY0QFnoECBYQAQ&url=https%3A%2F%2Fwww.skidsteerforum.com%2Fthreads%2F763-g-bobcat-still-locking-up.92889%2F&usg=AOvVaw1iO8ODs5gqdyL4oELS8yf3&opi=89978449
Century 100 wire feed welder free download manual
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiX5_3Gt66DAxVCC3kGHUEmCY0QFnoECA0QAQ&url=https%3A%2F%2Fwww.manualslib.com%2Fproducts%2FCentury-Wire-Feed-100-4113584.html&usg=AOvVaw3kmdPZSNde6Hkk_kq3bVxZ&opi=89978449
Deltaweld 350 with help 700 code ?
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwiJm8Xqtq6DAxUvrokEHSvtAyUQFnoECA4QAQ&url=https%3A%2F%2Fwww.fixya.com%2Fsupport%2Ft29927508-deltaweld_350_help_100_code&usg=AOvVaw1Zz2ud-ECJTvyBdf5Zm-bJ&opi=89978449
Not finding what you are looking for?