Repairing a Missile command cocktail arcade in Arcade and Pinball Posted July 24, 2011 ok, so I finally got some RAM chips ans sockets to be able to replace them later on if necessary. I also measured somes voltages: - The voltage of the board is ok since I measured exactly +5.0V - For the RAM chips it's different. The +5V and +12V varies but usually stay in the tolerated range (+-10%), however the -5V are often around -5.7V, -5.8V. I will change the chips anyway since the test mode tells me they are bad but should I worry that this bad voltage could be caused by something else on the board? If yes, how do I track that? Thanks for your help!