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How can I obtain a manual for the Megatouch Ducksan Type 19 monitor?

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How can I obtain a manual for the Megatouch Ducksan Type 19 monitor?

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(A) Please see schematic Type 19 for the Type 19 CGA monitor. A common failure with the Type 19 is that the C804 changes, not allowing the monitor to power up. Replace C804 with 10uF/ 50Vdc. Also, it is sometimes recommended to change C805, C806, and C808 with the same values. The B+ voltage can be measured at the cathode of D803 and should be 50Vdc. See Tech Note tech2007.pdf, which may be helpful when troubleshooting problems.

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