Found some exact spec trough microswitches made by Omron. These are used in all Stern troughs and i believe are the same from DE Jurassic park onwards. Often these switches can get dirt and other 'nasty' stuff in the rollers, or just wear out causing various weird game issues and problems.
I'm offering a 'shot' set of 4 switches with diodes available for £12 plus £1.20 postage, which is enough to replace most stern troughs. Stock is likely to be here towards the end of November so if you want a set there will be a week weeks wait most likely.
Pic of exact part
I'm offering a 'shot' set of 4 switches with diodes available for £12 plus £1.20 postage, which is enough to replace most stern troughs. Stock is likely to be here towards the end of November so if you want a set there will be a week weeks wait most likely.
Pic of exact part