How to say “Has the ground power unit been tested since it broke down yesterday?” in Japanese

In Japanese

昨日故障(きのうこしょう)した地上電源装置(ちじょうでんげんそうち)、その後(ご)ちゃんと動作確認(どうさかくにん)した？

Kinō koshō shita chijō dengen sōchi, sono go chanto dōsa kakunin shita?