Hi,

There must be something causing the PSU to fail. I would think that you must have some failed capacitors somewhere within the unit, either on the power board, or possibly on a card that have bulging ends. I've seen it with some early players where the video card has a couple of bulging capacitors which have excessive load on the PSU, causing it to fail prematurely.

With regards to PSUs - do you know which one you have in there at the moment?

If it has been replaced before, it is most likely a XP Power ECM40UT31 or ECM60UT31
Or it could be a LPT42 (or similar)

Look for the label on the PSU board (inside the perforated metal case, inside the machine) - make sure you replace like with like - don't change types as the wiring of the connectors needs to be changed.

If you search for the above PSUs, you should be able to find a replacement for less than $100 from DigiKey. It should be fairly easy to swap without any soldering.

Look at ALL the cards and see if you can see any capacitors that are bulging (especially at the top - the top should be totally flat, if it is domed outwards, then it has failed) - You'll need to note the capacitance and voltage and source replacements, which will need to be soldered in.

Good luck,

Steve

PS - All units eat drives! Tip - turn the unit off at the mains when not in use and do not leave a disc in the unit when in standby as the spindle motor doesn't ever seem to stop...

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.