CD400 power problem

[bigles]

Sounds to me like a failed or failing capacitor (could be more than one) on the PCBs of the CD400. Had this a few times with various electronic items, such as TV's, home Hi-FI, etc. Take an age to power up, but work ok once warmed up.

Usually easily identified by the end cap of the capacitor being swollen/bulged. They should be flat.

If you can get the details off the side, and you're handy with a soldering iron, then they can be DIY replaced.

n.b. this is a general image for reference, it's not from a CD400

Interesting.  Thanks for the info.