SOURCE: Unlocking Disc Tray?
There should be an access hole under the unit where you can move the load/unload mechanism manually.
SOURCE: model HT-E330K ..what is the number of transistor in part # QA801
Find the transistor on the board and look very closely at the markings (values) on the part in question. Use google for data sheets. Or, better yet, find a copy the schematic.
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