Yes, you should stop using your hearing aid if it needs repair to avoid further damage to the device or potential harm to your ear. Continuing to use a malfunctioning hearing aid can exacerbate the issue, possibly leading to more costly repairs, and may provide inaccurate sound amplification, which could strain your hearing. It's important to address any problems promptly by consulting with a hearing professional who can diagnose the issue and recommend appropriate repairs. Meanwhile, some audiologists may offer loaner hearing aids to ensure you don't go without assistance during the repair process.