I doubt its an issue with the drive, more likely the PSU and capacitors on the power board (next to the PSU).

I have had PSUs read correct voltages but fail to deliver required current when called upon.

I would replace both the power supply and capacitors and see if that resolves the issue.

Good luck,

Steve


Main: 861v6 (LPS), 808v6, UHD722, DSP8000SE Anniversaries, DSP5200.2HC, DSP7200.2, SW1600, Sky Q, Cambridge Audio BD, Roon, M80
Office: 861v4 (LPS), 818v3, 800v4, HD621, M&K S150P, DSP5500HC, M&K MPS2810 sub x2
Son's system: 861v4, HD621, DSP6000.2, DSP5200HC, DSP33
Spare: MCD, 100 Series, 200 Series, 500 Series, F80s, C15s.