How to say “The technician diagnosed the problem, but we're still waiting for the replacement part.” in Japanese
In Japanese
技術者が原因を突き止めてくれたんだけど、交換用の部品がまだ届かないんだ。
Gijutsusha ga gen'in o tsukitomete kureta n da kedo, kōkan'yō no buhin ga mada todokanai n da.