I have an XL converted to 6000 (Serial #582656) Ducksan Type 55 monitor that becomes vertically unstable and jittery after several hours of play. What can I do to correct this problem?
(A) There are a number of different components that can cause the screen to have a vertical jitter. Here are some suggestions: • Replace U201, the vertical processor or solder the pins again. • Change diodes D806 and D803 to RU3A diodes. • Change capacitors C209, C210, C211, and C809. (Q) My monitor jumps and makes it impossible to read the scores. Can it be adjusted, or do I need to buy a new one? (A) Call Merit Customer Service and ask for Joe to try a hardware configuration. If that does not solve the problem, then he will replace the touchscreen controller (and the touchscreen, if necessary). (Q) I am having a problem with two Ducksan monitors not powering up in my early Mark IV countertops. I have changed the STK-73410-2 chip and checked other components in the monitor power supply — everything seems to be intact. Could you suggest solutions or give me some clues where the problem is? (A) • Replace these capacitors: • C805: 10uF/50Vdc • C804: 10uF/50Vdc • C311: 1uF/160Vdc • Check
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