Audio Systems: car cd player works without key in the ignition., car cd player, tom the model

Question
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Followup To
Question -
My son drop a coin in my car cd player and now it stays on even if the key is turned off. I tried just hooking up the power wire by itself and the display and memory still works. I would imagine that something like a diode might have shorted out.How would I test for that.Thanks for any help.
Answer -
Dennis,
Please give me the complete model number of your stereo.
Tom,
The model number is a Kennwood KDC-119.Thanks Again Dennis
TOM,
T&D ELECTRONICS
tdeser@zoominternet.net

Answer
Dennis,
I checked my service manuals and I don't have a manual for your model kenwood stereo. If the stereo still works with the key off, the problem may be due to a shorted power control transistor. By using an ohm meter you should be able to trace down the shorted transistor.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net