Or if there is a component like a tiny capacitor, resistor etc. It could be a brain problem, in the chip that runs the whole shebang. It may be a membrane switch (probably is) and you may or may not be able to get inside of it, but as long as everything you can see is the same as the other buttons there's not a lot you can do there. So check the mechanism for that button and make sure nothing is bent a little out of shape or compressed. However, one way it could display the alarm time 'by itself' would be if the contacts for that Alarm button are almost touching even when the button is not depressed. They are separate buttons you hold down when you set either one. There isn't a switch on this that switches back and forth between time of day and alarm time. Then it, after a few seconds or minutes, it will suddenly show me the time I've set for the alarm: It will show me the time, then show me the alarm time (7:00am) before switching back to show me the time. Then yesterday I screwed the clock back together. I then cleaned the inside with a 1:1 mixture of water and isopropyl alcohol. Two days ago I opened up the alarm clock. Just for fun, if I wanted to try to repair it myself what would I need to look for after opening it? I'm hoping someone who knows electronics might give me some suggestions. The alarm can use either batteries or electricity. Sometimes it flickers back and forth between the actual time and alarm time. Recently, rather than show me the actual time, it shows me the time I've set for the alarm.
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