{"id":14777,"date":"2022-03-25T11:44:32","date_gmt":"2022-03-25T18:44:32","guid":{"rendered":"https:\/\/www.vernier.com\/til\/?p=14777"},"modified":"2022-03-25T11:44:34","modified_gmt":"2022-03-25T18:44:34","slug":"only-the-red-led-on-the-power-output-board-lights-when-connecting-to-energy-source","status":"publish","type":"post","link":"https:\/\/www.vernier.com\/til\/14777","title":{"rendered":"Only the red LED on the Power Output Board lights when connecting to energy source."},"content":{"rendered":"<p>The first LED on the board is the &#8220;reverse polarity&#8221; warning. If this light is coming on, you will need to  switch the red and black wires.<\/p>\n<p>On the <a href=\"\/product\/kidwind-power-output-board\/\">KidWind Power Output Board<\/a> (<nobr>KW-POBD<\/nobr>), there is a &#8220;Visual Voltmeter&#8221; series of LEDs that progress from green to yellow to red to indicate the voltage. There is also a red LED at the upper-left labeled &#8220;Reverse Polarity&#8221;, which is a warning light that the board is connected to read a negative voltage instead of a positive voltage. If you reverse the polarity (change the positions of the red and black wires), it should fix the issue.<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"575\" height=\"467\" src=\"https:\/\/www.vernier.com\/til\/wp-content\/uploads\/sites\/2\/2022\/03\/https___www_vernier_com_zoom__id_96823.png\" alt=\"\" class=\"wp-image-14779\"\/><\/figure>\n<\/p>\n<p>RELATED TILs:<\/p>\n<p><a href=\"\/til\/3220\/\">KidWind Troubleshooting and FAQs<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>The first LED on the board is the &#8220;reverse polarity&#8221; warning. If this light is coming on, you will need to switch the red and&#8230;<\/p>\n","protected":false},"author":31,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[3916,6492],"class_list":["post-14777","post","type-post","status-publish","format-standard","hentry","tag-kidwind","tag-kw-pobd"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/14777","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/users\/31"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/comments?post=14777"}],"version-history":[{"count":0,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/14777\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/media?parent=14777"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/categories?post=14777"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/tags?post=14777"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}