Engine Hour Meter

[skyemark]

New sort of problem with EHM. Yanmar LCD in B20 panel. Not the usual "it's blank", but has reset itself such that the decimal place has moved left-i.e it now reads 1/10th of the lifetime total and the figure to the right of the decimal changes hourly instead of ever 6 minutes.
Any ideas?

 

[Amulet]

Has it not simply run out of digits (i.e., hit 99999 or whatever) and switched to a less precise format of record? I have seen many digital meters/timers that do this.

 

[skyemark]

No, it's reading 129.7 instead of the true figure of 1297.x Nothing in the calibration manual to suggest that the decimal piont can be moved.

 

[Lon nan Gruagach]

This might sound daft, but seriously, it isnt.
Take it out of the panel, tip it over so decimal digits are lowest and tap it on a hard surface gently mind. This might nudge the decimal point back where it came from. If that dosent work try tipping it over the other way.
OK, I said it would sound daft, but.... many LCD displays have a row of pads that line up with the respective pads on the main circuit board. Between them is a strip with conductive elements arranged like the teeth of a comb. No pins or holes for the pins to go in.If the display shifts sideways just a tiny bit the connections can be dislodged.
If you fancy opening it up then you may find a hard wired decimal point wire that has slipped too.

If all else fails and the digits are right, but simply a misplaced decimal point then Tipex and a felt tip pen will fix it.

 

[vivo]

Any solution in the end? The same thing happened to my B20.