⟐ Answered 五月 28, 2025 at 2:59 GMT-7

⟐ Commented 八月 31, 2026 at 6:47 GMT-7

⟐ Commented 八月 30, 2026 at 16:08 GMT-7

Took apart--thoroughly cleaned the contacts on unit and batteries. I see no issues with wiring anywhere. The motor turns freely (with slight bumps every quarter inch, which I assume is normal. Don't know how to test if motor is issue, or trigger component or circuit board.
Replacement motor (could only find one, $108--too much to put into an older Ryobi) and don't know that this is the issue.

What could make a small motor like this suddenly stop working? Is there any way to take it apart and repair something inside the motor?

⟐ Answered 八月 29, 2026 at 12:45 GMT-7

⟐ Commented 八月 29, 2026 at 11:10 GMT-7

⟐ Commented 八月 29, 2026 at 7:51 GMT-7

⟐ Answered 八月 28, 2026 at 18:31 GMT-7

Anyone actually run these instead of OEM? Curious how they hold up.

Also, before I get under there — what's the actual torque spec for the blade bolts on this deck? And I don't own an impact wrench or a dedicated blade-locking tool, so what's the safest way people have blocked the blades to break the old bolts loose without one? Don't want to round anything off or end up fighting it with a pipe wrench and a prayer.

Thanks.

⟐ Answer accepted 八月 28, 2026 at 1:27 GMT-7

The error message stated: "Make sure you do not already have another connection open and try again."

I tried the following troubleshooting steps without success:

• Fresh boot with no other applications or browser tabs open.
• Tried multiple USB ports.

The solution that worked for me was adding my user account to the dialout group. I used the command: sudo usermod -a -G dialout <username> (replacing <username> with my actual username). After running this command and then logging out and back in, I verified I was added to the group using groups <username> and was then able to connect to the web console successfully after a reboot.

This seems to be a common permission issue on Linux systems for accessing serial ports.

⟐ Commented 八月 26, 2026 at 14:08 GMT-7

The problem is intermittent. When I turn the machine ON, the cooling fan runs, but the digital display does not turn on and the green power LED does not light up. There is also no welding output.

The power switch has been checked and it is working correctly. When the power switch is ON, the fan runs. When the power switch is OFF, the fan stops.

Previously, the same problem occurred. The next day I turned the machine ON again and it worked normally: the display came on, the green power light came on, and the welding output worked. Later, the same fault returned and now the fan runs but the display, power light and welding output do not work.

The machine specifications are:
Model: ARC-200
Input: 220/230V, 1 phase, 50/60Hz
Rated output: 200A
No-load voltage (Vo): 62V
Duty cycle: 60%

I want to troubleshoot and repair this machine step by step. Please help me identify which section I should check first. In particular, I would like to know where the auxiliary/control power supply for the digital display, green power LED and welding control circuit comes from after the main power switch.

I have a basic electrical tester and screwdrivers, but I currently do not have a digital multimeter with test leads.

I can provide photos of the machine and PCB if needed.

⟐ Commented 八月 26, 2026 at 6:12 GMT-7

⟐ Answered 八月 25, 2026 at 20:07 GMT-7

⟐ Commented 八月 25, 2026 at 15:15 GMT-7

⟐ Answer edited 八月 23, 2026 at 10:44 GMT-7

⟐ Answered 八月 23, 2026 at 8:33 GMT-7