HELP!! NH TL100A hour display stop working

[Geoffreywrc]

Just noticed today that the hour display on are NH TL100A has stopped working
Has anyone any experience of this or tell me perhaps what is wrong. All the other displays at the bottom are working fine.

 

[Slippery Slope]

Ours stopped working a few years ago. By my understanding, it’s unlikely to be rectifiable but the computer within keeps counting. We try to fix most problems ourselves but when I did have to get the pros out they plugged in their computer which told them an accurate hour read. We weren’t too far out from where we thought thankfully. We tend to service it based on average hours in a year divided by service period (if that makes sense). Sorry it’s not a very helpful solution, just my own experience of the matter!