My timer clock is resetting to midnight at power loss. It’s supposed to retain time for up to 4 hours. No “user” replaceable batteries, so must be a capacitor. Anyone know which capacitor is used for the clock, or has anyone attempted this repair?
Intermatic PE153 clock loses time
- Thread starter Garrettoomey
- Start date
the black ones look like cheap filter caps for that transformer, so my guess is the orange one... but throw us a bone, what kind of system is it?
It’s in the subject. Intermatic PE153. It’s the 3 circuit, digital timer, controller. There was a thread from last year about the same, but I was asked by moderator to start a new thread. I appreciate any input if others have found the component to replace in order to maintain the clocks time during brief power outages. I’m handy with a soldering iron, but not sure which component to order and swap.
Thanks, apparently I can't read!
The orange, nearly-coin-cell-sized device sure looks like a "super-cap" that could backup the rtc (it's also right next to the microcontroller which may have the rtc built-in, but I can't see enough of the board to determine if there's a separate clock chip). It looks like it might be a 5.5 volt, 47 millifarad (0.047F) cap.
Can you get a better shot of the board, particularly showing that orange cap? I couldn't find an image online that was clear enough.
Eaton, Elna, Kemet, Vishay are some manufacturers that make 5.5 volt 0.047F supercaps. They may also be listed as 47mF (milli farads), 47,000uF (micro farads). You can get them at Digikey, Mouser, etc. for a few bucks.
The orange, nearly-coin-cell-sized device sure looks like a "super-cap" that could backup the rtc (it's also right next to the microcontroller which may have the rtc built-in, but I can't see enough of the board to determine if there's a separate clock chip). It looks like it might be a 5.5 volt, 47 millifarad (0.047F) cap.
Can you get a better shot of the board, particularly showing that orange cap? I couldn't find an image online that was clear enough.
Eaton, Elna, Kemet, Vishay are some manufacturers that make 5.5 volt 0.047F supercaps. They may also be listed as 47mF (milli farads), 47,000uF (micro farads). You can get them at Digikey, Mouser, etc. for a few bucks.