First place I would look is capacitors. Check the PC mainboard, check the PC power supply, check the main power supply.
I'm not majorly technical unless its spelt out pretty much to the max. How do I check say the caps and the pc mboard first off? Thanks
A visual inspection is probably all that is necessary to start with.
You are looking for any electrolytic capacitors that are bulging at the top, or discoloured. If you do a Google image search for leaky capacitor you will find pictures of what to look for. Any leaky caps will need replacing - you will need to be reasonably skilled at desoldering and soldering to achieve this.
RFM has a computer case in the backbox which houses a computer. You will need to open the case to check the computer inside it for leaky caps.
In my experience, these caps are often damaged by heat over time, and tend to cause problems when the environment is heated - such as when the pinball is on for a length of time.
