{"id":871,"date":"2016-09-15T23:47:29","date_gmt":"2016-09-15T21:47:29","guid":{"rendered":"http:\/\/getgui.com\/blog\/?p=871"},"modified":"2019-11-08T01:07:54","modified_gmt":"2019-11-08T00:07:54","slug":"how-to-distinguish-fake-cloned-hp-laptop-ac-charging-power-adapter-original-genuine-one","status":"publish","type":"post","link":"https:\/\/getgui.com\/blog\/laptop-notebook-repairs\/how-to-distinguish-fake-cloned-hp-laptop-ac-charging-power-adapter-original-genuine-one\/","title":{"rendered":"How to distinguish fake \/ cloned HP laptop AC charging power adapter from the original \/ genuine one"},"content":{"rendered":"<p style=\"text-align: right; font-size: 12px;\"><a href=\"#procedure\">Go straight to the procedure<\/a><\/p>\n<h5>Issue<\/h5>\n<p>In this tutorial I will write about how to recognize a fake, copied or cloned HP laptop AC charging power adapter. I believe this is an important subject since <strong>low quality Chinese knock-off copies of HP power adapters can potentially overheat or malfunction and present a serious fire hazard<\/strong>. They are usually made from low quality materials, internal circuitry is simple and lacks proper safeguards (over-current, over-temperature and short circuit protection), any kind of product quality control seems non-existent. Power ratings on these things are made up out of thin air since these adapters are not capable of providing near the advertised power. Do not let the appearance of the adapter or even the HP logo on the sticker deceive you, these things are easiest to copy by the counterfeiters, but as you will see; the devil is in the details.<\/p>\n<h5>Tools required:<\/h5>\n<ul class=\"noIndent\">\n<li>Analog or digital kitchen scale<\/li>\n<li><a href=\"https:\/\/getgui.com\/blog\/pc-computer-laptop-repair-tools\/#multimeter\" target=\"_blank\" rel=\"noopener noreferrer\">DMM \/ Digital multimeter \/ voltmeter<\/a> (Optional, only required for last step)<\/li>\n<\/ul>\n<p>\n<br \/>\n<figure id=\"attachment_877\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 310px\"><a href=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-brick-close-up.jpg\"><img decoding=\"async\" src=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-brick-close-up-300x173.jpg\" alt=\"fake HP 90W power adapter\" width=\"300\" height=\"173\" class=\"size-medium wp-image-877\" srcset=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-brick-close-up-300x173.jpg 300w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-brick-close-up-768x442.jpg 768w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-brick-close-up-1024x589.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"caption wp-caption-text\">Fake HP 90W power adapter close up. Please ignore the custom warning sticker.<\/figcaption><\/figure><\/p>\n<p><figure id=\"attachment_879\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 310px\"><a href=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-brick-close-up.jpg\"><img decoding=\"async\" src=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-brick-close-up-300x180.jpg\" alt=\"Original HP 90W power adapter close up\" width=\"300\" height=\"180\" class=\"size-medium wp-image-879\" srcset=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-brick-close-up-300x180.jpg 300w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-brick-close-up-768x461.jpg 768w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-brick-close-up-1024x615.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"caption wp-caption-text\">Original HP 90W power adapter close up.<\/figcaption><\/figure><br \/>\n\n<\/p>\n<p><!--more--><\/p>\n<p>A few months ago I have ordered some, what I thought to be, original HP adapters from eBay. Ads title and description suggested that the 90W power adapters are original HP, but the price was a bit lower compared to the ones from other sellers. As I received the mentioned adapters and tested them on a HP laptop, I realized none of them was working. They were all missing the appropriate voltage on the middle or signal pin. The mentioned ID pin is responsible for the &#8220;handshake&#8221; with the HP laptop, simply put, it tells the laptop it is an original HP Smart power adapter and that it can provide 90 Watts of power. After I received a full refund, I decided to open up one of these adapters and try to fix it by soldering a 390K ohm resistor between V+ and ID lines. This is a common workaround used by manufacturers of aftermarket power adapters to bypass the HPs Smart identification circuit. When I disassembled the first one, I quickly realized this is not a genuine HP adapter; it had a very primitive circuit, lacking few of the crucial safety components, something HP wouldn&#8217;t dare to afford. Nonetheless I have applied the mentioned workaround and the adapter started working, it was time to stress test it. I connected it to a HP DV7 laptop with an empty battery and a graphic intensive application running; the total current draw was around 3 amps at 19 volts which means the laptop required around 57 Watts of power. This shouldn&#8217;t be a problem since the power adapter was rated to deliver maximum of 4.74 amps at 19 volts or 90 Watts of power at any given time. After a few minutes of stress testing adapter became scorching hot to the touch, two hours later I noticed a burning smell and adapter stopped working completely. In this simple tutorial I will guide you through the quick process of distinguishing fake power adapter from the original one, without opening it up or requiring any expert knowledge.<\/p>\n<h5 id=\"procedure\">Procedure<\/h5>\n<h6>Step 1 &#8211; Weighing the adapter<\/h6>\n<p>Weighing the adapter on a kitchen scale is the most reliable technique, since fake power adapters are considerably lighter than original ones, because they lack quite a few components on the internal circuitry that add to the adapters&#8217; weight. Weight of the original HP 19V 4.74A 90W Adapter with its complex internal circuitry is exactly 340 grams (0.749 pounds), whereas the fake adapter weighs only 230 grams (0.507 pounds).<\/p>\n<p>\n<br \/>\n<figure id=\"attachment_885\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 310px\"><a href=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-weight-230g.jpg\"><img decoding=\"async\" src=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-weight-230g-300x249.jpg\" alt=\"Fake HP 90W power adapter weight is 230 g or 0.507 lb\" width=\"300\" height=\"249\" class=\"size-medium wp-image-885\" srcset=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-weight-230g-300x249.jpg 300w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-weight-230g-768x637.jpg 768w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-weight-230g-1024x849.jpg 1024w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-weight-230g.jpg 1108w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"caption wp-caption-text\">Fake HP 90W adapter weight is 230 g<br \/> or 0.507 lb<\/figcaption><\/figure><br \/>\n<figure id=\"attachment_886\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 310px\"><a href=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-weight-340g.jpg\"><img decoding=\"async\" src=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-weight-340g-300x259.jpg\" alt=\"Original HP 90W power adapter weight is 340 g or 0.749 lb\" width=\"300\" height=\"259\" class=\"size-medium wp-image-886\" srcset=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-weight-340g-300x259.jpg 300w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-weight-340g-768x663.jpg 768w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-weight-340g-1024x884.jpg 1024w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-weight-340g.jpg 1028w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"caption wp-caption-text\">Original HP 90W adapter weight is 340 g or 0.749 lb<\/figcaption><\/figure><br \/>\n\n<\/p>\n<h6>Step 2 &#8211; Visual comparison<\/h6>\n<p>One of the missing features on the fake adapter is the holder for the cable attachment, which is a part of the power connector or power plug on the original adapter.<\/p>\n<p>\n<br \/>\n<figure id=\"attachment_889\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 310px\"><a href=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-plug-connector.jpg\"><img decoding=\"async\" src=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-plug-connector-300x233.jpg\" alt=\"Missing the holder for cable attachment\" width=\"300\" height=\"233\" class=\"size-medium wp-image-889\" srcset=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-plug-connector-300x233.jpg 300w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-plug-connector-768x595.jpg 768w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-plug-connector.jpg 939w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"caption wp-caption-text\">Without the holder for cable attachment<\/figcaption><\/figure><br \/>\n<figure id=\"attachment_890\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 310px\"><a href=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-plug-connector.jpg\"><img decoding=\"async\" src=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-plug-connector-300x279.jpg\" alt=\"Holder for cable attachment is present\" width=\"300\" height=\"279\" class=\"size-medium wp-image-890\" srcset=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-plug-connector-300x279.jpg 300w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-plug-connector.jpg 754w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"caption wp-caption-text\">The holder for cable attachment is present<\/figcaption><\/figure><br \/>\n\n<\/p>\n<p>Width of the Velcro tie on the fake adapter is 12 mm (0.472 in), whereas on the original one it&#8217;s exactly 20 mm (0.787 in).<\/p>\n<p>\n<br \/>\n<figure id=\"attachment_893\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 310px\"><a href=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-cable-bundling-velcro-tie.jpg\"><img decoding=\"async\" src=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-cable-bundling-velcro-tie-300x210.jpg\" alt=\"Velcro tie width is 12 mm (0.472 in)\" width=\"300\" height=\"210\" class=\"size-medium wp-image-893\" srcset=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-cable-bundling-velcro-tie-300x210.jpg 300w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-cable-bundling-velcro-tie-768x539.jpg 768w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-cable-bundling-velcro-tie-1024x718.jpg 1024w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-cable-bundling-velcro-tie.jpg 1045w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"caption wp-caption-text\">Width of the Velcro tie is 12 mm (0.472 in)<\/figcaption><\/figure><br \/>\n<figure id=\"attachment_894\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 310px\"><a href=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-cable-bundling-velcro-tie.jpg\"><img decoding=\"async\" src=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-cable-bundling-velcro-tie-300x169.jpg\" alt=\"Velcro tie width is 20 mm (0.787 in)\" width=\"300\" height=\"169\" class=\"size-medium wp-image-894\" srcset=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-cable-bundling-velcro-tie-300x169.jpg 300w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-cable-bundling-velcro-tie-768x432.jpg 768w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-cable-bundling-velcro-tie-1024x576.jpg 1024w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-cable-bundling-velcro-tie.jpg 1234w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"caption wp-caption-text\">Width of the Velcro tie is 20 mm (0.787 in)<\/figcaption><\/figure><br \/>\n\n<\/p>\n<h6>Step 3 &#8211; Output voltage measurement<\/h6>\n<p>The use of a digital or analog multimeter is required for this step. Put your multimeter in a DC voltage measurement mode and connect the negative probe to the outer side of the connector and positive probe to the inner side of the barrel (be careful not to touch the middle or ID pin).<\/p>\n<p>\n<br \/>\n<figure id=\"attachment_896\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 310px\"><a href=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/hp-power-adapter-testing-measuring-voltage-multimeter.jpg\"><img decoding=\"async\" src=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/hp-power-adapter-testing-measuring-voltage-multimeter-300x199.jpg\" alt=\"Measuring output voltage of the power adapter.\" width=\"300\" height=\"199\" class=\"size-medium wp-image-896\" srcset=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/hp-power-adapter-testing-measuring-voltage-multimeter-300x199.jpg 300w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/hp-power-adapter-testing-measuring-voltage-multimeter-768x511.jpg 768w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/hp-power-adapter-testing-measuring-voltage-multimeter-1024x681.jpg 1024w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/hp-power-adapter-testing-measuring-voltage-multimeter.jpg 1504w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"caption wp-caption-text\">Measuring output voltage of the power adapter.<\/figcaption><\/figure><br \/>\n\n<\/p>\n<p>The output DC voltage of the original adapter is around 19.04 V and is well inside the specifications, whereas the output voltage of the fake adapter is at 19.90 V which is almost 1 volt over the specified voltage.<\/p>\n<p>\n<br \/>\n<figure id=\"attachment_898\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 310px\"><a href=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-voltage-test-multimeter.jpg\"><img decoding=\"async\" src=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-voltage-test-multimeter-300x233.jpg\" alt=\"Output DC voltage is 19.90 V\" width=\"300\" height=\"233\" class=\"size-medium wp-image-898\" srcset=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-voltage-test-multimeter-300x233.jpg 300w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-voltage-test-multimeter-768x596.jpg 768w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/fake-counterfeit-hp-power-adapter-90W-voltage-test-multimeter.jpg 910w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"caption wp-caption-text\">Output DC voltage is 19.90 V<\/figcaption><\/figure><br \/>\n<figure id=\"attachment_899\" class=\"thumbnail wp-caption aligncenter\" style=\"width: 310px\"><a href=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-voltage-test-multimeter.jpg\"><img decoding=\"async\" src=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-voltage-test-multimeter-300x213.jpg\" alt=\"Output DC voltage is 19.04 V\" width=\"300\" height=\"213\" class=\"size-medium wp-image-899\" srcset=\"https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-voltage-test-multimeter-300x213.jpg 300w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-voltage-test-multimeter-768x544.jpg 768w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-voltage-test-multimeter-1024x725.jpg 1024w, https:\/\/getgui.com\/blog\/wp-content\/uploads\/2016\/09\/original-genuine-hp-power-adapter-90W-voltage-test-multimeter.jpg 1039w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"caption wp-caption-text\">Output DC voltage is 19.04 V<\/figcaption><\/figure><br \/>\n\n<\/p>\n<h6 id=\"word-of-caution\">Word of caution<\/h6>\n<p style=\"font-size: 12px;\">Electronics repair is not difficult, but it requires a lot of patience, calmness, focus, a steady hand and some common sense. When in doubt or when you do not fully understand something, educate yourself first by googling, before following the step in question. If you do not feel competent enough to follow a given procedure, it is best to seek help from an expert technician in your area. <strong>I cannot be held responsible for any damage caused to yourself, your equipment or to the device you are repairing as a result of following this tutorial.<\/strong><\/p>\n<hr>\n<\/hr>\n<p>If you have found this blog post useful and would like to buy me a cup of coffee, please click <a href=\"https:\/\/getgui.com\/blog\/donations\/\">here<\/a> :<span>)<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Go straight to the procedure Issue In this tutorial I will write about how to recognize a fake, copied or cloned HP laptop AC charging power adapter. I believe this is an important subject since low quality Chinese knock-off copies of HP power adapters can potentially overheat or malfunction and present a serious fire hazard. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[141,139,140,138,136,137,135],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>How to distinguish fake \/ cloned HP laptop AC charging power adapter from the original \/ genuine one | GetGui.com<\/title>\r\n<meta name=\"description\" content=\"3 step tutorial on how to spot or recognize a fake, copied or cloned HP laptop AC charging power adapter. 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