Just found out C14 capacitor fell off which seems for U2 time chip. Can anyone tell what the MFD of this C14 capacitor is? I guess it is a 2.2 uf/50V ceramic capacitor, but not certain.
GLX-PCB-MAIN board missing C14 capacitor - cannot set time, always shows 12AM Monday
- Thread starter JinR
- Start date
- Dec 13, 2020
- 905
- Pool Size
- 19600
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Aquapure 1400
Board repair isn't very common for pool equipment, so few folks here will have a ready answer. It's a pretty big ask for someone to try reading the text on a 18xx-size (or so) cap after tearing open their control box. You might try getting the data sheet for the time base chip and checking the sample circuit therein.
From the position, it may be just a noise suppressor. That's non-critical. Anything between .1 and 1 uf is probably fine. If it's a load capacitance for the crystal, it is pretty critical and will be only a few picofarads.
NB: It's pretty certain that a board with a SMD falling off has other problems. To wit, if it really is a noise suppressor, it's unlikely that losing it would kill the clock function completely. It could well be the chip is fried and/or several board traces are compromised.
From the position, it may be just a noise suppressor. That's non-critical. Anything between .1 and 1 uf is probably fine. If it's a load capacitance for the crystal, it is pretty critical and will be only a few picofarads.
NB: It's pretty certain that a board with a SMD falling off has other problems. To wit, if it really is a noise suppressor, it's unlikely that losing it would kill the clock function completely. It could well be the chip is fried and/or several board traces are compromised.
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