Repair of HP11C

[NivagSwedna]

I bought a non-working HP11C and I am trying to gradually work through its problems. It seems to have some strange damage to its traces anyway...

Whilst repairing it I noticed that two of the PCB traces were shorted which seems wrong since HP made the effort to route them across the PCB... anyway they track back to a small blue component, which appears to currently be low resistance.

The small blue component is marked 181J (see attached)

I would expect this to not be low resistance? Is this a 180pF capacitor (maybe Mica)?

Thanks in advance