Hey Larry,
as Onefinity stated here, their Hardware Emergency Stop button is not wired to the “estop” input of the mainboard, but interrupts power to the entire controller at the internal power supply instead. Therefore it is not advisable to use this big red E-Stop button on the controller’s case AT ALL, for the reasons explained here.
What I would do is the following:
- Try to pull up the physical E-Stop button as much as possible and turn it to the right. If this leads to no success,
- disconnect the Onefinity Controller from mains electricity, open the controller case, loosen the two wires from the back of the physical E-Stop button and splice them together, thereby bypassing the E-Stop button. Now connect the mains electricity again and turn the controller on. If it runs now, then it was the E-Stop button which was damaged by hitting on it. This has happened to others before.
If the controller still doesn’t run, you may check the power switch. Do you have the Onefinity Controller version 4 (or lower) which has a rocker switch for powering it on? If so, with disconnected from mains electricity, you could check if it failed because of dust inside.
Do you have a multimeter? If so, if you switch it to ohms (resistance), you can, with the controller disconnected from mains electricity, measure at the two poles of a switch and see if it works. In case the switch is switched “on” the resistance measured will near to zero. If you measure nothing, the switch may be defective.
Also you can use a multimeter to check if the required voltages are there. Caution! It is dangerous to measure with the controller connected to mains electricity. But this way you could check, with the controller connected to mains electricity and the switch in “on” position, if the voltages expected are there. Inside the Onefinity CNC Controller, there is a 36 V version of Meanwell LRS-350 power supply.
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Two of its terminals are called “1 AC L” and “2 AC N”. With the multimeter set to “600 V AC”, measure if your mains electricity is there by inserting the multimeter probes to these two terminals. It should show something between 220 and 240 V (100 – 120 V in North and Latin America and Japan).
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Two of the terminals are called “V+” and “V-”. With the multimeter set to “50 V DC” or “100 V DC”, measure if 36 V is there by inserting the multimeter probes to these two terminals.
If you successfully measure your mains voltage under 1.) but not the 36 V under 2.), then the Meanwell power supply is defective.
If you measure successfully that both voltages under 1.) and 2.) are present, then the failure is further down the road, i.e. at the switch or on the mainboard. Then it depends whether you have the rocker switch version (v4 or less) or the push-button version (v5). If the first, check the power switch as described above. If the latter, find the jumper J18 on the mainboard and short its two pins with an insulated electrician’s slotted screwdriver.