Taylor Finley
12-09-2014, 5:43 PM
Hello,
I have a shenhui 350 machine. Last week the laser's etching power decreased substantially. I noticed a squealing buzzing sound and saw the plasma in the tube was dancing around on the high-voltage supply side, opposite the side where the light exits the tube. The tube was the original from the factory, and had about 250 hours on it near 95% power, so I thought it had seen its useful life and ordered a new tube.
New tube gets here, same problem--can't etch through a thin layer of paint, just leaves burnt paint. I've re-done the alignment a hundred times now. The problem seems electrical.
When I fire the laser by pressing 'test' on the power supply, I get a steady beam. When the rdcl320-a controller fires either a pulse or continuously, there is a buzzing crackling noise and the laser puts out very little energy.
I switched over to the second laser output on the controller board and fired some tests that way. For about 10 minutes it seemed to work fine, except when vector cutting I noticed when the y axis was moving laser power was decreased, and then the buzzing and crackling returned for all modes (except power supply test button).
I am at a loss here... I don't know what component to replace, or where else this problem could be coming from. Is there anything simple I'm overlooking? I've removed and re-set all the wire connections. I've checked the continuity to ground on every grounding point.
I have so many orders piled up and am running out of time and money to throw at this machine, can anyone here help??
Thank you!
I have a shenhui 350 machine. Last week the laser's etching power decreased substantially. I noticed a squealing buzzing sound and saw the plasma in the tube was dancing around on the high-voltage supply side, opposite the side where the light exits the tube. The tube was the original from the factory, and had about 250 hours on it near 95% power, so I thought it had seen its useful life and ordered a new tube.
New tube gets here, same problem--can't etch through a thin layer of paint, just leaves burnt paint. I've re-done the alignment a hundred times now. The problem seems electrical.
When I fire the laser by pressing 'test' on the power supply, I get a steady beam. When the rdcl320-a controller fires either a pulse or continuously, there is a buzzing crackling noise and the laser puts out very little energy.
I switched over to the second laser output on the controller board and fired some tests that way. For about 10 minutes it seemed to work fine, except when vector cutting I noticed when the y axis was moving laser power was decreased, and then the buzzing and crackling returned for all modes (except power supply test button).
I am at a loss here... I don't know what component to replace, or where else this problem could be coming from. Is there anything simple I'm overlooking? I've removed and re-set all the wire connections. I've checked the continuity to ground on every grounding point.
I have so many orders piled up and am running out of time and money to throw at this machine, can anyone here help??
Thank you!