Quote from: The pinbalist formally known as Dean Morgan on June 19, 2009, 09:34:32 PM

Without seing the electronic schematic for the LED, I would say it is only staying on for a little while after power off due to capacitor discharge.  This would be normal and not related to the fault.

Yeah, that is the case as there is a 15000uF capacitor in parallel with the LED and voltage drop resistor - and probably the LED fades off in the same way when the coin door is opened.