基板誤作動で半導体部品損傷か 山形新幹線で相次ぐE8系故障巡りJR東社長が見解 by | Jul 15, 2025 | ニュース | 0 comments Post Content Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.