Jessy: 今日录音设备故障,稍后补上.

go off without a hitch: to happen successfully without any problems 事情进展顺利

hitch:a problem or difficulty that causes a short delay 暂时的困难(或问题);故障;障碍

The ceremony went off without a hitch. 仪式进行得很顺利.

To the bride's relief, the wedding ceremony went off without a hitch. 令新娘庆幸的是,婚礼进展得很顺利.