{"id":4216,"date":"2026-02-18T08:35:02","date_gmt":"2026-02-18T16:35:02","guid":{"rendered":"https:\/\/www.rbdinstruments.com\/blog\/?p=4216"},"modified":"2026-02-18T08:35:05","modified_gmt":"2026-02-18T16:35:05","slug":"dgc-iii-power-supply-board-check","status":"publish","type":"post","link":"https:\/\/www.rbdinstruments.com\/blog\/dgc-iii-power-supply-board-check\/","title":{"rendered":"DGC III power supply board check"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The DGC III ion gauge control is used on many of the older PHI (Physical Electronics) surface analysis systems. Sometimes the DGC III fails to operate properly, and the unit will beep and display 0.0-3<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are several possibilities for this issue;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The filament may be open. This blog post shows you how to test for that &#8211; <a href=\"https:\/\/www.rbdinstruments.com\/blog\/how-to-test-an-ion-gauge-filament\/\">https:\/\/www.rbdinstruments.com\/blog\/how-to-test-an-ion-gauge-filament\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One or more of the voltages on the power supply board (+\/-12, +5) may be defective. This PDF file shows how to test for that &#8211; <\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2026\/02\/DIG-III-Power-supply-board-check.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Embed of DIG-III-Power-supply-board-check.\"><\/object><a id=\"wp-block-file--media-a22b0095-2a00-4cf5-b930-1ee86a6b3d81\" href=\"https:\/\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2026\/02\/DIG-III-Power-supply-board-check.pdf\">DIG-III-Power-supply-board-check<\/a><a href=\"https:\/\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2026\/02\/DIG-III-Power-supply-board-check.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-a22b0095-2a00-4cf5-b930-1ee86a6b3d81\">Download<\/a><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Some other things that you can check include \u2013<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-rbd-techspot wp-block-embed-rbd-techspot\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"ZgxuCr8DJO\"><a href=\"https:\/\/www.rbdinstruments.com\/blog\/dgc-iii-filament-select-relay\/\">DGC III Filament Select Relay<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201cDGC III Filament Select Relay\u201d \u2014 RBD TechSpot\" src=\"https:\/\/www.rbdinstruments.com\/blog\/dgc-iii-filament-select-relay\/embed\/#?secret=L1WsqT2qPB#?secret=ZgxuCr8DJO\" data-secret=\"ZgxuCr8DJO\" width=\"584\" height=\"329\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-rbd-techspot wp-block-embed-rbd-techspot\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"hd4b8PCXtD\"><a href=\"https:\/\/www.rbdinstruments.com\/blog\/ion-gauge-coated-ceramics\/\">Ion gauge coated ceramics<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u201cIon gauge coated ceramics\u201d \u2014 RBD TechSpot\" src=\"https:\/\/www.rbdinstruments.com\/blog\/ion-gauge-coated-ceramics\/embed\/#?secret=dDi9cQ6u4b#?secret=hd4b8PCXtD\" data-secret=\"hd4b8PCXtD\" width=\"584\" height=\"329\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">If none of the above things solve the issue then most likely one of the other boards (emission, microprocessor, electrometer, set point) is bad. Troubleshooting those boards is more challenging so typically if the problem is not the filament or power supply board then the unit is set to RBD Instruments for repair. To contact RBD you can create a ticket here \u2013<a href=\"https:\/\/www.rbdinstruments.com\/support\/portal.html\">https:\/\/www.rbdinstruments.com\/support\/portal.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This blog post shows you how to test the power supply board in the DGC III ion gauge controller that is used on many of the older PHI XPS surface analysis systems. <a href=\"https:\/\/www.rbdinstruments.com\/blog\/dgc-iii-power-supply-board-check\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":3679,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"This blog post shows how to test the power supply board in the DGC III ion gauge controller.","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[164,162],"tags":[30,406],"class_list":["post-4216","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general-optics-and-vacuum","category-operation-and-calibration-procedures","tag-dgc-iii","tag-ion-gauge-controller"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.rbdinstruments.com\/blog\/wp-content\/uploads\/2023\/02\/Filament-relay.jpg?fit=1512%2C2016&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p2DEXo-160","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/4216","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/comments?post=4216"}],"version-history":[{"count":2,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/4216\/revisions"}],"predecessor-version":[{"id":4219,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/posts\/4216\/revisions\/4219"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/media\/3679"}],"wp:attachment":[{"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/media?parent=4216"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/categories?post=4216"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rbdinstruments.com\/blog\/wp-json\/wp\/v2\/tags?post=4216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}