Tachometer not working. 94 PS 205

[Spence]

Hey guys. Tons of useful info on here but I can't find the thread that i saw before suggesting where to source parts from. All dash lights and gauges work except for tach needle. Connections on back of gauge appear to be fine. Is a replacement tach needed and where can I get one? Anything to troubleshoot before I deem it ruined? I assume if the tach is bad then my hour meter (which still works fine) will need to be replaced with a fresh one and I will have I run the hours up manually as described in a recent post?

Thanks for any help!