I have one of those simple LCD bedside alarm clocks which has basic functions like time, date, alarm and a stopwatch. One day it was dead and putting in a new AAA didn't fix it.
I opened it up and tested the x3 104 thermistors and x1 2.2K resistor with an Ohmmeter and found that 2 of the thermistors are not having current pass through them, could that be the issue as to why its not working?
My knowledge of circuitry is only basic so I was wondering why there are even thermistors in this thing as it does not have a temperature function. How would a basic clock like this have just died and could it be something more serious like the chip failed?
I have included pictures of the PCB and would really appreciate it if someone could tell me more about what I'm looking and and whats likely to be the problem. I've got a soldering iron and spares.
Thanks for the help,
I opened it up and tested the x3 104 thermistors and x1 2.2K resistor with an Ohmmeter and found that 2 of the thermistors are not having current pass through them, could that be the issue as to why its not working?
My knowledge of circuitry is only basic so I was wondering why there are even thermistors in this thing as it does not have a temperature function. How would a basic clock like this have just died and could it be something more serious like the chip failed?
I have included pictures of the PCB and would really appreciate it if someone could tell me more about what I'm looking and and whats likely to be the problem. I've got a soldering iron and spares.
Thanks for the help,