If there is AC input but no DC output when attempting to obtain a reading from a rectifier, the appropriate response is to ________.

When troubleshooting a rectifier, if there is an AC input but no DC output, checking the fuse and ensuring there are no loose connections is essential. Fuses protect the electrical circuit by interrupting the flow of current in the event of a fault, such as overloads. If the fuse is blown, it will prevent DC output, even if there is AC input. Additionally, loose connections can disrupt the flow of electricity, resulting in ineffective operation of the rectifier.

By addressing these potential issues first, you can often resolve the problem without escalating it further. This proactive approach is critical in maintaining system functionality and safety, as it helps identify and rectify simple issues before involving qualified repair personnel, which can save time and resources.