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Ultra 6 (RNDU6320) stuck at READYNAS prompt
Hi,
Tried to replaced the PSU on my Ultra 6 today. I were a little careless because i already did the PSU replacement on my other Ultra 6 and it went smothly. This time i managed to connected the wires on the On/Off switch to the PSU power socket wrongly. Found this out when the unit didnt start and reconnected the wires to the correct position. But still it didnt start. Hopefully this did not fry the mainboard.
Then i tried with a spare ATX PSU i have. This time the unit started up, but it stuck at the ReadNAS prompt. Fan is still spinning fine, so i guess it s not the PSU whose cause the issue (?).
Please help. Thanks.
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Is this the symptom that caused you to suspect the power supply, or was it behaving differently?
"READYNAS" on the display is not a prompt, it's the default display. All it needs is 5V (and not very well regulated 5V at that) for it to show up. Check that you didn't knock the RAM or something loose when you did the replacement.
How exactly did you miswire the AC switch? I rather doubt that's the issue with it not booting, though it may have harmed the replacement supply, but it would be good to know.
When you say the fan is "running fine", do you mean at full blast, or does it calm down at some point? If the latter, then check to see if you just didn't get the display connection fully seated.
Took this picture before disassembling. When i reconnected the wires on the new PSU, i arranged exactly as the picture shown. when i started up the NAS the led light flashed but turned off right away, and so was the fan. When i disconnected and checked, found out that on the new PSU, the blue wire connected to the pin with S and D marking is on the top instead of the bottom in the original PSU.
The Fan is spinning at full when i used a spare ATX PSU. And i could not see any loose wire.
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