Hey Folks,

This morning my Dell Precision 3620 MT is giving me an amber 2-1 pattern on the power button. According to this resource my motherboard is dead:

https://www.dell.com/support/manuals/en-us/precision-t3620-workstation/prec_t3620_om_pub/power-led-diagnostics?guid=guid-52106768-c0ec-411e-a583-375a950df672

The motherboard P/N is 0MWYPT (from the label under the circled 'Dell' on the motherboard).  I see some available used boards with this part number (ebay, etc.).  I also see some available boards with P/N 09WH54 that claim they are interchangeable.

My questions are:

1) Am I correct in diagnosing the motherboard as the issue?

2) Is 09WH54 a valid replacement for 0MWYPT? (My system has the M.2 PCIe NVMe and a Xeon E3-1240 v5)

3) What should I check to ensure this doesn't happen again?  Should I check the voltage on the PSU? 

Thanks for reading - any advice is welcome!