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Hey Larry (or anyone else with IC expertises)
Like a mystery?
I’m cannibalizing two identical bicycle LED strobe units for my MOB pole. The circuit boards have a push button that cycles between Flash – Steady – Off but are set up so they are ON and flashing as soon as power is applied such as when you first put the batteries in. I want flashing so I’m just ignoring the switch and switching the power to the boards. As I’m sure you know, soldering little things like this isn’t for the faint of heart so I’m testing at each step. The first one came out perfectly. The second won’t go on. I tried with just one battery (running out of ideas) and it goes on! It’s flashing although at half brightness. With one and one half volts, it works. With the proper 3 volts, nada. The first one also works with one battery at half brightness. What do you think gives? -- Roger Long |
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