{"id":3996,"date":"2018-02-10T23:50:11","date_gmt":"2018-02-11T02:50:11","guid":{"rendered":"https:\/\/tangopardo.com.ar\/2cf7\/?p=3996"},"modified":"2018-12-29T18:40:34","modified_gmt":"2018-12-29T21:40:34","slug":"fixing-an-inverter-welder","status":"publish","type":"post","link":"https:\/\/tangopardo.com.ar\/2cf7\/2018\/02\/10\/fixing-an-inverter-welder","title":{"rendered":"Fixing an inverter welder"},"content":{"rendered":"\n<p>Today while working on the rack closet the welder died on me for no apparent reason. But, after power off it made a couple of noises and the fan ran for a moment.<\/p>\n\n\n\n<p>For being a Chinese machine it actually looks quite good and neat on the inside. The boards have conformal coating and just a tad of flux residue on some pads. The only thing out of place was a blob of solder on a header instead of a jumper. <\/p>\n\n\n\n<ul class=\"wp-block-gallery columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-attachment-id=\"3998\" data-permalink=\"https:\/\/tangopardo.com.ar\/2cf7\/2018\/02\/10\/fixing-an-inverter-welder\/img_20180210_111419559_hdr\" data-orig-file=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111419559_HDR.jpg\" data-orig-size=\"3264,2448\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2&quot;,&quot;credit&quot;:&quot;Adrian Pardini pardo.bsso AT gmail.com - adrian AT tangopardo.com.ar&quot;,&quot;camera&quot;:&quot;XT1068&quot;,&quot;caption&quot;:&quot;Fixing a SalkorPRO ITEP2170 welder&quot;,&quot;created_timestamp&quot;:&quot;1518261262&quot;,&quot;copyright&quot;:&quot;CC BY-SA-NC 2.5 AR Adrian Pardini - pardo.bsso AT gmail.com - adrian AT tangopardo.com.ar&quot;,&quot;focal_length&quot;:&quot;3.54&quot;,&quot;iso&quot;:&quot;80&quot;,&quot;shutter_speed&quot;:&quot;0.01122&quot;,&quot;title&quot;:&quot;Fixing a SalkorPRO ITEP2170 welder&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"IMG_20180210_111419559_HDR\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Fixing a SalkorPRO ITEP2170 welder&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111419559_HDR-300x225.jpg\" data-large-file=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111419559_HDR-1024x768.jpg\" src=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111419559_HDR-1024x768.jpg\" alt=\"\" data-id=\"3998\" data-link=\"https:\/\/tangopardo.com.ar\/2cf7\/?attachment_id=3998\" class=\"wp-image-3998\" srcset=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111419559_HDR-1024x768.jpg 1024w, https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111419559_HDR-300x225.jpg 300w, https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111419559_HDR-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Fixing a SalkorPRO ITEP2170 welder<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-attachment-id=\"3999\" data-permalink=\"https:\/\/tangopardo.com.ar\/2cf7\/2018\/02\/10\/fixing-an-inverter-welder\/img_20180210_111431036\" data-orig-file=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111431036.jpg\" data-orig-size=\"3264,2448\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2&quot;,&quot;credit&quot;:&quot;Adrian Pardini pardo.bsso AT gmail.com - adrian AT tangopardo.com.ar&quot;,&quot;camera&quot;:&quot;XT1068&quot;,&quot;caption&quot;:&quot;Fixing a SalkorPRO ITEP2170 welder&quot;,&quot;created_timestamp&quot;:&quot;1518261271&quot;,&quot;copyright&quot;:&quot;CC BY-SA-NC 2.5 AR Adrian Pardini - pardo.bsso AT gmail.com - adrian AT tangopardo.com.ar&quot;,&quot;focal_length&quot;:&quot;3.54&quot;,&quot;iso&quot;:&quot;80&quot;,&quot;shutter_speed&quot;:&quot;0.02976&quot;,&quot;title&quot;:&quot;Fixing a SalkorPRO ITEP2170 welder&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"IMG_20180210_111431036\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Fixing a SalkorPRO ITEP2170 welder&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111431036-300x225.jpg\" data-large-file=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111431036-1024x768.jpg\" src=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111431036-1024x768.jpg\" alt=\"\" data-id=\"3999\" data-link=\"https:\/\/tangopardo.com.ar\/2cf7\/?attachment_id=3999\" class=\"wp-image-3999\" srcset=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111431036-1024x768.jpg 1024w, https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111431036-300x225.jpg 300w, https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111431036-768x576.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Fixing a SalkorPRO ITEP2170 welder<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" data-attachment-id=\"4000\" data-permalink=\"https:\/\/tangopardo.com.ar\/2cf7\/2018\/02\/10\/fixing-an-inverter-welder\/img_20180210_111535747\" data-orig-file=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111535747.jpg\" data-orig-size=\"2448,3264\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2&quot;,&quot;credit&quot;:&quot;Adrian Pardini pardo.bsso AT gmail.com - adrian AT tangopardo.com.ar&quot;,&quot;camera&quot;:&quot;XT1068&quot;,&quot;caption&quot;:&quot;Blob on a header&quot;,&quot;created_timestamp&quot;:&quot;1518261336&quot;,&quot;copyright&quot;:&quot;CC BY-SA-NC 2.5 AR Adrian Pardini - pardo.bsso AT gmail.com - adrian AT tangopardo.com.ar&quot;,&quot;focal_length&quot;:&quot;3.54&quot;,&quot;iso&quot;:&quot;125&quot;,&quot;shutter_speed&quot;:&quot;0.03293&quot;,&quot;title&quot;:&quot;Blob on a header&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"IMG_20180210_111535747\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Blob on a header&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111535747-225x300.jpg\" data-large-file=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111535747-768x1024.jpg\" src=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111535747-768x1024.jpg\" alt=\"\" data-id=\"4000\" data-link=\"https:\/\/tangopardo.com.ar\/2cf7\/?attachment_id=4000\" class=\"wp-image-4000\" srcset=\"https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111535747-768x1024.jpg 768w, https:\/\/tangopardo.com.ar\/2cf7\/wp-content\/uploads\/2018\/12\/IMG_20180210_111535747-225x300.jpg 225w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><figcaption>Blob on a header<\/figcaption><\/figure><\/li><\/ul>\n\n\n\n<p>I made a couple of measurements, the high voltage section was fine but the control supply was totally dead, except for a brief moment when turning off the main switch. Traced back from that board until finding a small block with a forward converter (kinda odd, I expected a flyback).  The only component with bad readings was the recovery diode. I swapped in an UF4007 and at the next flick it was alive again.<\/p>\n\n\n\n<p>Of all the things that could go wrong with a welder on novice hands this was not expected.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Today while working on the rack closet the welder died on me for no apparent reason. But, after power off it made a couple of noises and the fan ran for a moment. For being a Chinese machine it actually looks quite good and neat on the inside. The boards have conformal coating and just [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[13,33,24,90,93],"tags":[],"class_list":["post-3996","post","type-post","status-publish","format-standard","hentry","category-electronica","category-futura","category-hacks","category-la-plata","category-welding-metalworking"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pmnbC-12s","_links":{"self":[{"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/posts\/3996","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/comments?post=3996"}],"version-history":[{"count":2,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/posts\/3996\/revisions"}],"predecessor-version":[{"id":4001,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/posts\/3996\/revisions\/4001"}],"wp:attachment":[{"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/media?parent=3996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/categories?post=3996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tangopardo.com.ar\/2cf7\/wp-json\/wp\/v2\/tags?post=3996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}