Hello, its been a very long time since I posted anything on the forum, however, if like me you have an Isuzu engine where the hour counter built into the tachometer gauge (which is made by a company called Siemens VDO) - and the display has gone blank then I've got a fix!
These tachometers are rebadged alot, and seem to be similar on Vetus, Volvo Penta and several other brands.
Inside the hour counter it will be counting perfectly well, its just the LCD display thats gone. It uses a process known as "COG" - chip on glass, and then a tiny ribbon cable to connect to it - its the ribbon cable on the glass that breaks over time.
I've managed to reverse engineer the LCD signals, so I can get a display working again, its not quite finished yet but wondered if anyone else would be interested in it?