Mesa 7i97T Flashing /done & PWR

More
3 months 3 weeks ago #347631 by Sziggy_NC
I tried turning on the cnc today to find that it had no connection to the PC. After opening up the back I noticed the /done and PWR leds were flashing.
I have verified that the power supply is outputting 5v when disconnected from the mesa. I then disconnected everything from the mesa (ethernet, and all I/O) When power was reconnected to the mesa I measured less than 1v.
Is this a short caused by a power surge? Or did the firware get corrupted?
Since the pwr led can't stay solid I haven't attempted switching the jumpers to the fallback firmware.

Any tips on what to check next?
Do I need to ship this out for repair or replacement?

Please Log in to join the conversation.

More
3 months 3 weeks ago #347634 by PCW
Replied by PCW on topic Mesa 7i97T Flashing /done & PWR
Flashing PWR lights usually indicate a marginal 5V power supply
It could also indicate a short on the analog outputs.
(if there is a problem with the analog outputs, the 5V power drain
will increase suddenly once the FPGA is programmed and analog power enabled)
 

Please Log in to join the conversation.

More
3 months 3 weeks ago #347635 by Sziggy_NC
The powersupply was the problem. I am glad that it died instead of my mesa.
I should have tested that yesterday instead of assuming that 5v no load meant the power supply was good.
Thank you for the quick response as always!

Please Log in to join the conversation.

Time to create page: 0.091 seconds
Powered by Kunena Forum