MV1-1 calendar work tick

nikoskon

n00b
Joined
Jan 12, 2021
Posts
13
Hello again,

This time, i have an issue with another board, again, bought faulty, fixed a few traces, and all working again, but the calendar just wont tick when running the diagnostics.

I have replaced the crystal, as well as the D4990 chip, as both had signs of corrosion, but still nothing.

I have found that pins 3-5 on the F0 chip, all remain low for some reason.

So my question is, do the F0 chips fail, or does the F0 chip, get its signals for the RTC from somewhere else?

Weird thing is, that after i did all the repairs, the calendar worked (for about 15 minutes until power off), then all of a sudden, nothing.

Any ideas?
 

nikoskon

n00b
Joined
Jan 12, 2021
Posts
13
Ok, this is weird:scratch:

It appears that i have fixed it....without doing anything, it just started working again :scratch:

Seems intermittent, but i'll just take this as a win :glee:
 
Top