Chosen Solution
My Kenwood DPC-472 is consuming lots of AA batteries, so I thought I would try to run it via the AC adapter to save batteries. I removed the batteries and plugged in the adapter to a 120V socket and into the AC plug on the unit. I inserted a disk, made sure the Hold switch was not switched on, and pressed Play. 00 flashed on the screen, and the unit turned off. I replaced the batteries, keeping the AC adapter plugged in, and got the same behavior. When the AC adapter is plugged in, it appears the device defaults to the AC power. I unplugged the AC adapter, and tried again, just on batteries again, and the CD played without issue. Are there connections I should check to make sure the power is getting through?
I ended up opening up the device, unplugging the power source plugs from the board (AC and battery), and then plugging them back in again, making sure they were fully seated. I managed to play a CD with just the AC connection plugged in, and it continued to function after I plugged in the battery connection. I think the connection had loosened over time (and falls). It is running now.
Make sure you’re using the correct AC adapter and the adapter itself is working properly. Essentially, the AC adapter is a step-down transformer enclosed in a plastic case which converts 120v AC to 12v DC power. You could try to find something similar to test this adapter with,,, a small DVD player, radio, etc. Also make sure the connection from AC power to the DC unit is nice, snug, and clean. I hope this helps. One more thing. There may be a small reset button somewhere on the unit. If so use a pen. paper clip, etc and gently push the reset button. Again, I’d like to know if this helps or you find another resolution. Thanks.
