![]() I found that there was indeed a tiny chargeable NiMH battery inside the unit (the green component with white corrosion on the side, close to the center of the picture below). Tamper proof tri-wing screw head Tri-wing bit Fortunately, I happened to have bits that fit this kind of head, so this did not deter me. It turned out that the screws used to keep the units together had tamper proof tri-wing heads. I had encountered similar timers before that needed the internal battery to be replaced, so I decided to have a look inside to determine if this was the case again. I guessed that an internal battery just need to be charged, so I left them connected for a day to allow them to be charged up. Some of my timers were of the type “EverFlourish EMT757A”, probably bought at Clas Ohlson: Back side of timerĭespite having a notoriously bad user interface (that forces me to google the user manual each time I want to use them), the timers, that had been laying in a drawer since last season, showed an entirely blank LCD display, even when connected to a mains outlet. ![]() I usually use timers to control them, but this year I ran into a problem. It is that time of year when one puts electric advent stars and candlesticks in the windows.
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