只插5u4g.... in order to verify it's function, I guess u overlooked the test circuit per thread #65.
yes, 正常工作時粒1084應該好熱,所以成品要比足夠heatsink capacity.
你果對係凍既~ means no DC current flowing thru the LT. ....may be the Adj_pin of LT1084 was shorted to ground/chasis. check it out !!!!!