Hi Paul,

For the older DSP6000's, I'd recommend servicing the entire back panels (both upper and lower) - there are several capacitors on the lower panel that provide the initial smoothing and should be replaced.

I also checkover the DSP/Comms boards and connection boards (as they also form part of the PSU).

Cheers,

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.