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Machine was switched off for few months. Then when switched on MPU display said MPU battery low . Changed battery in MPU and reconnected . Only two green leds on both boards in machine are lit as well as a bulb in the top marquee.. No lights or display on MPU6 unit now? I have reconnected a refurbished PSU that I bought on Ebay and still only the green leds lit and bulb in marquee. I ordered a new MPU6 unit on ebay ( new old stock and connected it. Still nothing, only the 2 green leds on each board and bulb in marquee. Can anyone help or suggest something ? Thanks
