Electronics > Repair
What more i can do?
Harry_22:
Yes, a strange case. The working does not work and vice versa. Could it be contagious?
In any case, we dug up something. We have to think.
Harry_22:
--- Quote from: 222Lab_Test222 on November 18, 2024, 07:58:03 am ---TP ? What is TP here?
Is it Test Point, Or is it Timing Pulses for RTC?
--- End quote ---
Was it me or you who asked? :)
Seems the Test Point.
--- Quote from: 222Lab_Test222 on November 18, 2024, 07:58:03 am ---The TP2 is shorted to GND here, and TP 1 is connected to resistance and then VCC.
--- End quote ---
Please check TP2 Gnd connection on both boards.
Next have a look on TP1 signal as usual.
Check and compare the battery voltages.
Harry_22:
Please check the Pins 9, 1, 2, 3 (see the picture attached)
It seems we have already looked at the other signals and they are the same (better double check).
PS
For me it is look like Watchdog timer on Pin11.
Harry_22:
Before I forget.
Attach the trace from continuous beeper. We will look for 63 Hz presence there.
222Lab_Test222:
The thing i ask about TP is because in RTC datasheet its written Timing Pulses.
So TP 11 PIN RTC is Timing Pulses and TP1 and TP2 is Test points, am I right?
TP of RTC is Input or is It Output data?
Can you explain this picture, whats the text mean?
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