{"id":3898,"date":"2023-07-07T06:46:23","date_gmt":"2023-07-06T22:46:23","guid":{"rendered":"https:\/\/www.jingpengpcb.com\/?p=3898"},"modified":"2026-10-02T19:33:21","modified_gmt":"2026-10-02T11:33:21","slug":"debugging-pcb-circuits","status":"publish","type":"post","link":"https:\/\/www.jingpengpcb.com\/en\/blog\/debugging-pcb-circuits\/","title":{"rendered":"Methods for Debugging a Newly Designed PCB Circuit"},"content":{"rendered":"<h2>Visual Inspection and Examination<\/h2>\n<p>After bringing back the new PCB, the first step is to conduct a preliminary visual inspection to check for any obvious cracks, short circuits, open circuits, or other issues. If necessary, you should also check whether the resistance between the power supply and ground is within normal range.<\/p>\n<h2>Install the Components Step by Step<\/h2>\n<p>To avoid being at a loss when problems arise, do not install everything at once when working with large circuit boards or boards with many components. Instead, install the modules one by one; this will help you pinpoint the source of the problem. Start by installing the power supply section, turn on the power to check if the output is normal, and then gradually install the other modules.<br \/>\nUsing a Regulated Power Supply with Current Limiting<\/p>\n<p>During power-on testing, consider using an adjustable regulated power supply with current-limiting capability. Set the overcurrent protection threshold, slowly increase the power supply\u2019s voltage, and monitor the input current, input voltage, and output voltage. If no overcurrent protection issues occur during the voltage increase and the output voltage remains normal, the power supply has passed the test.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-6101\" src=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/PCB\u53e0\u5c42-1024x576.jpg\" alt=\"PCB Circuit\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/PCB\u53e0\u5c42-1024x576.jpg 1024w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/PCB\u53e0\u5c42-300x169.jpg 300w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/PCB\u53e0\u5c42-768x432.jpg 768w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/PCB\u53e0\u5c42-400x225.jpg 400w, https:\/\/www.jingpengpcb.com\/wp-content\/uploads\/2023\/07\/PCB\u53e0\u5c42.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h2>Methods for Troubleshooting<\/h2>\n<p>There are several methods for troubleshooting:<\/p>\n<ul>\n<li><strong>Voltage Measurement Method<\/strong>: Check whether the voltages at the power supply pins of each chip are normal, and whether the operating voltages at each point are normal.<\/li>\n<li><strong>Signal Injection Method<\/strong>: Apply a signal source to the input, measure the waveforms at each point in reverse order, and locate the fault.<\/li>\n<li><strong>\u201cThe \u201dSee, Hear, Smell, Touch\u201d Method<\/strong>: Check the components for visible damage, listen for normal operating sounds, check for unusual odors, and feel for normal temperatures.<\/li>\n<\/ul>\n<p>By using appropriate debugging methods, we can efficiently resolve issues during circuit debugging, ensure that newly designed PCB circuits operate smoothly, save time and costs, and improve work efficiency.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u7c97\u7565\u89c2\u5bdf\u4e0e\u68c0\u67e5 \u5728\u5e26\u56de\u65b0PCB\u540e\uff0c\u9996\u5148\u8981\u8fdb\u884c\u7c97\u7565\u89c2\u5bdf\uff0c\u68c0\u67e5\u677f\u5b50\u662f\u5426\u6709\u660e\u663e\u7684\u88c2\u7eb9\u3001\u77ed\u8def\u3001\u65ad\u8def\u7b49\u95ee\u9898\u3002\u5fc5\u8981\u65f6\u8fd8\u8981\u68c0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6101,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"Methods for Debugging a Newly Designed PCB Circuit","description":"How do you debug a newly designed PCB? This guide explains methods for conducting a preliminary visual inspection after the board returns, checking power and ground impedance, and installing components module by module to pinpoint faults, helping you quickly identify issues."},"_slim_seo_primary_term_category":0,"_slim_seo_primary_term_post_tag":0,"footnotes":""},"categories":[26],"tags":[103],"class_list":["post-3898","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-pcb"],"_links":{"self":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/3898","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/comments?post=3898"}],"version-history":[{"count":1,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/3898\/revisions"}],"predecessor-version":[{"id":19440,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/posts\/3898\/revisions\/19440"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/media\/6101"}],"wp:attachment":[{"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/media?parent=3898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/categories?post=3898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jingpengpcb.com\/en\/wp-json\/wp\/v2\/tags?post=3898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}