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DLP 4500无法连接电脑,尝试过不少办法

Other Parts Discussed in Thread: DLP4500

连上电源线后,板子上一个绿灯长亮,一个绿灯闪烁,同时投射出紫色光。但是插上USB连上电脑没反应,GUI软件显示没有connected。之前一直正常工作的。

试过J18接线帽,也不行。