{"id":1119,"date":"2022-04-27T20:44:32","date_gmt":"2022-04-27T18:44:32","guid":{"rendered":"http:\/\/176.165.215.6\/wordpress\/?page_id=1119"},"modified":"2022-04-27T20:44:32","modified_gmt":"2022-04-27T18:44:32","slug":"reparation-dun-ampli-a-tube-eurocb-ev-200","status":"publish","type":"page","link":"https:\/\/ordi-tech.fr\/index.php\/reparation-dun-ampli-a-tube-eurocb-ev-200\/","title":{"rendered":"R\u00e9paration d&rsquo;un ampli \u00e0 tube EuroCB EV-200"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Cet ampli pr\u00e9sentait plusieurs probl\u00e8mes : plus de lampe de puissance, plus de mode \u00ab\u00a0Stand-by\u00a0\u00bb et plus d&rsquo;affichage de la puissance&#8230;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271713559_4926572337400716_3716829748034746250_n.png\" alt=\"\" class=\"wp-image-1120\"\/><figcaption>Sch\u00e9ma inspir\u00e9 du Zetagi BV-131, les valeurs et implantations des composants ne sont pas toutes exactes, je modifie au fur et \u00e0 mesure de mon exploration\u2026<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271715085_4926576420733641_4417258722815583541_n.jpg\" alt=\"\" class=\"wp-image-1121\"\/><figcaption>Vue d&rsquo;ensemble c\u00f4t\u00e9 transformateur du EuroCB EV-200<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271726263_4926575787400371_3009527647336307007_n.jpg\" alt=\"\" class=\"wp-image-1122\"\/><figcaption>Vue c\u00f4t\u00e9 cuivre du EuroCB EV-200, assez diff\u00e9rent du Zetagi BV-131<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271754984_4926576504066966_6420459199096249887_n.jpg\" alt=\"\" class=\"wp-image-1123\"\/><figcaption>Circuit imprim\u00e9 c\u00f4t\u00e9 composants<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271718590_4926576117400338_1167725894115810039_n.jpg\" alt=\"\" class=\"wp-image-1124\"\/><figcaption>Tube utilis\u00e9 dans l&rsquo;ampli EV-200, c&rsquo;est un EL509, tube plus fr\u00e9quemment rencontr\u00e9 dans les t\u00e9l\u00e9viseurs \u00e0 lampes des ann\u00e9es 1967 \u00e0 1975 et recycl\u00e9s dans les amplis HF des ann\u00e9es 70-80<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271738010_4926575930733690_7565306519451429079_n.jpg\" alt=\"\" class=\"wp-image-1125\"\/><figcaption>Vue c\u00f4t\u00e9 composants du EuroCB EV-200<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271723596_4926575704067046_1243628139724886448_n.jpg\" alt=\"\" class=\"wp-image-1126\"\/><figcaption>test du potentiom\u00e8tre ajustable du circuit de mesure de puissance<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271756818_4926575427400407_3798305995848950362_n.jpg\" alt=\"\" class=\"wp-image-1127\"\/><figcaption>L&rsquo;ajustable coup\u00e9 du circuit de mesure<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271744792_4926575407400409_5383780672306155883_n.jpg\" alt=\"\" class=\"wp-image-1128\"\/><figcaption>Le coupable et coup\u00e9 : l&rsquo;ajustable 10k du circuit de mesure<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271758530_4926575660733717_3655507714076816939_n.jpg\" alt=\"\" class=\"wp-image-1129\"\/><figcaption>Test du potentiom\u00e8tre ajustable de remplacement qui fait bien son travail<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271744531_4926575450733738_6942769242529628305_n.jpg\" alt=\"\" class=\"wp-image-1130\"\/><figcaption>La partie mesure de puissance refaite \u00e0 neuf int\u00e9gralement<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271714100_4926575410733742_2291148297210775732_n.jpg\" alt=\"\" class=\"wp-image-1131\"\/><figcaption>La puissance 100W en AM annonc\u00e9 par le constructeur n&rsquo;y est pas mais c&rsquo;est tout \u00e0 fait normal&#8230;<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271723886_4926575360733747_7040442573309331772_n.jpg\" alt=\"\" class=\"wp-image-1135\"\/><figcaption>Le corps du transistor touche la self, ce qui provoque une panne du mode Stand by<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271733743_4926576584066958_3916489561696460295_n-1.jpg\" alt=\"\" class=\"wp-image-1134\"\/><figcaption>Gros plan sur le transistor de commande du relais stand by<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271724422_4927112557346694_5668203125523512585_n-1.jpg\" alt=\"\" class=\"wp-image-1136\"\/><figcaption>Petite am\u00e9lioration : remplacement de l&rsquo;\u00e9clairage \u00e0 filament par 2 LED vertes<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271717938_4927112044013412_7109194170564727858_n.jpg\" alt=\"\" class=\"wp-image-1137\"\/><figcaption>\u00c7a fait tout de suite plus classe, non ?<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/ordi-tech.fr\/wp-content\/uploads\/2022\/04\/271722436_4927124987345451_3022082124737153883_n.jpg\" alt=\"\" class=\"wp-image-1138\"\/><figcaption>la fa\u00e7ade en gros plan, finalement on a bien les 100 Watt annonc\u00e9s !<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Cet ampli pr\u00e9sentait plusieurs probl\u00e8mes : plus de lampe de puissance, plus de mode \u00ab\u00a0Stand-by\u00a0\u00bb et plus d&rsquo;affichage de la puissance&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1119","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/ordi-tech.fr\/index.php\/wp-json\/wp\/v2\/pages\/1119","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ordi-tech.fr\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ordi-tech.fr\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ordi-tech.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ordi-tech.fr\/index.php\/wp-json\/wp\/v2\/comments?post=1119"}],"version-history":[{"count":0,"href":"https:\/\/ordi-tech.fr\/index.php\/wp-json\/wp\/v2\/pages\/1119\/revisions"}],"wp:attachment":[{"href":"https:\/\/ordi-tech.fr\/index.php\/wp-json\/wp\/v2\/media?parent=1119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}