OmniTurn   CNC Lathes Made in Oregon
 Fast... Precise... Affordable... Home Contact

The World's Most Cost-Effective Turning Machines
OmniTurn G4 CNC:
No yellow "Control On" lamp or no display on monitor

NOTE: Blue text links to pictures; click picture to close.

Oregon Coast (Click picture to close)
No yellow "Control On" lamp:
The yellow power light indicates that the computer power supply is working. The 12V should come on when the system is turned on and the computer is working.
If the monitor displays the start-up information, replace the bulb (#53 bayonet).

Rotate locking lever to access bulb.
If there is also no display on the monitor, first do the following:

No Display on Monitor: The Control On lamp may have blown and not been replaced, and the monitor might also be bad. If the issue is a bad monitor, the control will boot up as normal, but there will be no display on the monitor.

To quickly determine if it’s just the monitor, set power on, then wait a minute, then press “N” key (to not backup program files). Wait a few seconds, then press the blue “Servos On” button. (The blue “Servos On” lamp may not come on: it may have blown and not been replaced). If you hear the servos come on, the control is probably OK, but the monitor may have failed. Click here to troubleshoot the monitor.

Back to Top
Back to Troubleshoot G4
Back to Troubleshoot