{"id":389,"date":"2022-05-31T11:58:02","date_gmt":"2022-05-31T11:58:02","guid":{"rendered":"https:\/\/darylwhite.net\/?p=389"},"modified":"2022-05-31T12:38:01","modified_gmt":"2022-05-31T12:38:01","slug":"tps-4000-replacement-parts","status":"publish","type":"post","link":"https:\/\/darylwhite.net\/index.php\/2022\/05\/31\/tps-4000-replacement-parts\/","title":{"rendered":"TPS-4000 Replacement Parts"},"content":{"rendered":"\n

The new parts arrived to repair the Topward TPS-4000 power supply I had diagnosed in a previous post.<\/p>\n\n\n\n

The Motorola MJ2955 was replaced with a MOSPEC branded part as originals are in short supply and popular with audio amplifier enthusiasts.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

The 2SA1015GR was replaced with a BC557C as I have many of these.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Being the inquisitive type, I decided to cut open the old power transistor to see what was inside.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n

Using a digital microscope I managed to capture significant damage on the silicon.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n\n\n\n
\"\"<\/a><\/figure>\n\n\n\n

Completed power supply.<\/p>\n\n\n\n

\"\"<\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"

The new parts arrived to repair the Topward TPS-4000 power supply I had diagnosed in a previous post. The Motorola MJ2955 was replaced with a MOSPEC branded part as originals are in short supply and popular with audio amplifier enthusiasts. The 2SA1015GR was replaced with a BC557C as I have many of these. Being the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-389","post","type-post","status-publish","format-standard","hentry","category-topward-tps-4000"],"_links":{"self":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts\/389","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/comments?post=389"}],"version-history":[{"count":5,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts\/389\/revisions"}],"predecessor-version":[{"id":402,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts\/389\/revisions\/402"}],"wp:attachment":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/media?parent=389"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/categories?post=389"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/tags?post=389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}