We have a Wiltron 561 with a KME monitor that has died. Monitor appears to be 8" (tube is NEC C8M47P39-SB). The Witron part number for the unit is 561-D-32508, we don't see any model number marked on the monitor. However, the pc board has KME MB22 marked on it. There is a resistor in series with D8 that has burned. Is this something you could repair? Any idea of approximate cost? Is there a replacement (CRT or LCD) that would be available?