Long shot, but any thoughts with this bloody thing.
Harmon Karden drive and play.
http://www.ukdapper.co.uk/harman-kardon-dp1-eu-drive-play-ipod-connetivity-p-4840.htmlTB and I went to great lengths to prep connections for this, and other things.
Only to find the screen didn't respond. But the control knob did lite up. Fixed the broken wires to the screen and it now lights up as well but gives an error code and the message please wait. It never sparks up fully and cycles the error message every few seconds. Only further thing I can find is one of the LEDs on the knob circuit board is dim.

Oh and some burning around what looks like a heat sink? This nut holds it on and looks most burnt, although it doesn't really show in the pic

Some other pics while i was at it just in case somebody sees something.
Repaired wires, I assumed the yellow goes to the un insulates wire in the main cable. It was unattached

It makes no odds if the screen and knob input plugs are swapped. Error message is the same. It's not seeing something...? :-/

Fues had blown when we looked prior to attempted power up. Fuse on the board is not blown afaict. Bridging it does nout.
Any thoughts?
