{"id":82,"date":"2026-05-24T11:58:44","date_gmt":"2026-05-24T11:58:44","guid":{"rendered":"https:\/\/www.ktaudio.hu\/blog\/?p=82"},"modified":"2026-05-24T11:58:45","modified_gmt":"2026-05-24T11:58:45","slug":"a-suket-tuner-es-a-rejtett-joule-ho-egy-onkyo-ht-r538-av-receiver-ujjaszuletese","status":"publish","type":"post","link":"https:\/\/www.ktaudio.hu\/blog\/2026\/05\/24\/a-suket-tuner-es-a-rejtett-joule-ho-egy-onkyo-ht-r538-av-receiver-ujjaszuletese\/","title":{"rendered":"A s\u00fcket tuner \u00e9s a rejtett Joule-h\u0151: Egy Onkyo HT-R538 AV receiver \u00fajj\u00e1sz\u00fclet\u00e9se"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">A h\u00e1zimozi er\u0151s\u00edt\u0151k (AV receiverek) vil\u00e1ga h\u00edres arr\u00f3l, hogy a hatalmas bels\u0151 alkatr\u00e9sz-s\u0171r\u0171s\u00e9g \u00e9s a folyamatos h\u0151termel\u00e9s miatt ezek a k\u00e9sz\u00fcl\u00e9kek id\u0151vel sz\u00f3 szerint k\u00e9pesek &#8222;megenni&#8221; a saj\u00e1t forraszt\u00e1saikat. Nemr\u00e9g \u00e9rkezett a KTAudio m\u0171hely\u00e9be egy megb\u00edzhat\u00f3, 5.1 csatorn\u00e1s <strong>Onkyo HT-R538<\/strong> r\u00e1di\u00f3er\u0151s\u00edt\u0151, amely egy meglehet\u0151sen bizonytalan \u00e9s \u00f6sszetett hibajelens\u00e9get produk\u00e1lt: A tulajdonos\u00e1n\u00e1l a k\u00e9sz\u00fcl\u00e9k ugyan elindult, de resetel\u00e9s ellen\u00e9re sem tudott bel\u0151le hangot kicsikarni! Egyetlen bemenetr\u0151l sem adott ki hangot egyetlen kimenetre sem, az FM r\u00e1di\u00f3 pedig \u00fcresen, n\u00e9m\u00e1n szaladt v\u00e9gig a teljes frekvenciask\u00e1l\u00e1n, an\u00e9lk\u00fcl, hogy ak\u00e1r csak egyetlen helyi ad\u00e1st is k\u00e9pes lett volna megtal\u00e1lni.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Az \u00fcgyf\u00e9l meg is \u00e9rkezett az er\u0151s\u00edt\u0151vel \u00e9s egy\u00fctt meg is n\u00e9zt\u00fck, hogy milyen hibajelens\u00e9geket produk\u00e1l. H\u00e1l\u00f3zati fesz\u00fclts\u00e9g al\u00e1 helyezve a Stand By LED ugyan vil\u00e1g\u00edtott, de a bekapcsol\u00e1sra csak kattog\u00e1ssal reag\u00e1lt. T\u00f6bbsz\u00f6ri ki-be kapcsolgat\u00e1s ut\u00e1n a k\u00e9sz\u00fcl\u00e9k bekapcsolt. Mivel od\u00e9bb is helyeztem a k\u00e9sz\u00fcl\u00e9ket az asztalon \u00e9s forgattam is, a csatlakoz\u00e1sok ellen\u0151rz\u00e9se, hangfalak \u00e9s bemeneti egys\u00e9gek csatlakoztat\u00e1sa miatt, egyszer csak megsz\u00f3lalt. A tulajdonos nagyon meglep\u0151d\u00f6tt, hogy ez hogyan lehets\u00e9ges. Hosszasan taglaltam a lehets\u00e9ges hib\u00e1kat, de felt\u0171nt k\u00f6zben, hogy az er\u0151s\u00edt\u0151 teteje nagyon melegszik, \u00e9gett por szagot \u00e1raszt. Megegyezt\u00fcnk, hogy egy alapos tiszt\u00edt\u00e1s \u00e9s hibafelt\u00e1r\u00e1s k\u00f6vetkezik.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A fel\u00fcletes diagnosztika ilyenkor azonnal a digit\u00e1lis processzor (DSP) v\u00e9gzetes meghib\u00e1sod\u00e1s\u00e1ra \u00e9s\/vagy a tuner modul teljes elhal\u00e1loz\u00e1s\u00e1ra gyanakodna, ami a gy\u00e1ri panelcsere horrorisztikus \u00e1ra miatt azonnal a gazdas\u00e1gi tot\u00e1lk\u00e1r kateg\u00f3ri\u00e1j\u00e1ba soroln\u00e1 a k\u00e9sz\u00fcl\u00e9ket. A m\u00e9r\u0151asztalon v\u00e9gzett szisztematikus ellen\u0151rz\u00e9s sor\u00e1n azonban gyorsan kider\u00fclt, hogy a vez\u00e9rl\u00e9s, a tuner \u00e9s a fesz\u00fclts\u00e9gszab\u00e1lyz\u00f3 \u00e1ramk\u00f6r\u00f6k alapvet\u0151en m\u0171k\u00f6d\u0151k\u00e9pesek lenn\u00e9nek, de a fizikai kontaktus hi\u00e1nya megb\u00e9n\u00edtja \u0151ket. A g\u00e9p belsej\u00e9t vastagon bor\u00edt\u00f3, h\u0151szigetel\u0151 takar\u00f3k\u00e9nt funkcion\u00e1l\u00f3 porr\u00e9teg elt\u00e1vol\u00edt\u00e1sa ut\u00e1n a mikroszk\u00f3pos vizsg\u00e1lat felt\u00e1rta a val\u00f3di okot: sz\u00e1mtalan, szabad szemmel szinte l\u00e1thatatlan forraszt\u00e1si reped\u00e9s (hidegforraszt\u00e1s) alakult ki a kritikus \u00e1ramk\u00f6ri pontokon.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A jav\u00edt\u00e1s sor\u00e1n egy rendk\u00edv\u00fcl apr\u00f3l\u00e9kos \u00e9s t\u00fcrelmet ig\u00e9nyl\u0151 folyamatot hajtottam v\u00e9gre a stabil m\u0171k\u00f6d\u00e9s \u00e9rdek\u00e9ben:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A teljes bels\u0151 szerkezet \u00e9s a h\u0171t\u0151bord\u00e1k kompresszoros portalan\u00edt\u00e1sa, visszaadva a g\u00e9p term\u00e9szetes konvekci\u00f3s h\u0171t\u00e9s\u00e9t<\/li>\n\n\n\n<li>A fesz\u00fclts\u00e9gszab\u00e1lyz\u00f3 szekci\u00f3 \u00e9s a tuner modul mikroszkopikus forraszt\u00e1si reped\u00e9seinek szisztematikus felkutat\u00e1sa<\/li>\n\n\n\n<li>Kondenz\u00e1torok ellen\u0151rz\u00e9se<\/li>\n\n\n\n<li>Az \u00f6sszes bizonytalan, el\u00f6regedett forraszt\u00e1si pont teljes friss\u00edt\u00e9se \u00e9s \u00fajraforraszt\u00e1sa min\u0151s\u00e9gi, tart\u00f3s alapanyagokkal<\/li>\n\n\n\n<li>A bels\u0151 csatlakoz\u00f3k, szalagk\u00e1belek \u00e9s \u00e9rintkez\u0151k vegyi tiszt\u00edt\u00e1sa a t\u00f6k\u00e9letes jel\u00e1tvitel \u00e9rdek\u00e9ben<\/li>\n\n\n\n<li>\u00c1tfog\u00f3 \u00e1ramk\u00f6ri \u00e9s h\u00e1l\u00f3zati biztons\u00e1gi ellen\u0151rz\u00e9sek az \u00f6sszeszerel\u00e9s el\u0151tt<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Az \u00f6sszeszerel\u00e9st k\u00f6vet\u0151 els\u0151 ind\u00edt\u00e1s azonnali siker\u00e9lm\u00e9nyt hozott. Az Onkyo er\u0151s\u00edt\u0151 nemcsak m\u00e1sodpercek alatt, stabilan kelt \u00e9letre, de a hangja is azonnal megj\u00f6tt: az FM tuner a k\u00e9zi hangol\u00e1si zajz\u00e1r felold\u00e1sa ut\u00e1n csont n\u00e9lk\u00fcl, t\u0171\u00e9lesen fogta be a helyi r\u00e1di\u00f3ad\u00e1sokat. A projekt legizgalmasabb \u00e9s egyben legviccesebb \u201emell\u00e9khat\u00e1sa\u201d (side-effect) a tesztel\u00e9s sor\u00e1n der\u00fclt ki. A m\u00e9r\u0151asztalon v\u00e9gzett egy \u00f3r\u00e1s j\u00e1rat\u00e1s alatt a g\u00e9p <strong>fizikailag m\u00e9rhet\u0151en sokkal kev\u00e9sb\u00e9 melegszik, mint a jav\u00edt\u00e1s el\u0151tt<\/strong>. Ennek oka a tiszta fizika: a repedt, mikro-\u00edves forraszt\u00e1sok hatalmas \u00e1tmeneti ellen\u00e1ll\u00e1st k\u00e9peztek, a megn\u00f6vekedett ellen\u00e1ll\u00e1s pedig a teljes\u00edtm\u00e9ny egy r\u00e9sz\u00e9t felesleges h\u0151v\u00e9 alak\u00edtotta, r\u00e1ad\u00e1sul a stabiliz\u00e1torok is t\u00f6bb helyen a sz\u00fcks\u00e9gesn\u00e9l t\u00f6bb fesz\u00fclts\u00e9get voltak k\u00e9nytelenek elf\u0171teni. A friss, tiszta forraszt\u00e1sokkal az ellen\u00e1ll\u00e1s minim\u00e1lisra cs\u00f6kkent, az \u00e1ram akad\u00e1lytalanul folyik, \u00edgy megsz\u0171nt a lok\u00e1lis t\u00falmeleged\u00e9s.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A mind\u00f6ssze 10 000 Ft-os, v\u00e9gtelen\u00fcl bar\u00e1ti munkad\u00edj\u00e9rt az \u00fcgyf\u00e9l nemcsak egy m\u0171k\u00f6d\u00e9sk\u00e9ptelen f\u00e9mhullad\u00e9kb\u00f3l kapott vissza egy t\u00f6k\u00e9letesen \u00fczemel\u0151, 100 Wattos m\u00e1rk\u00e1s h\u00e1zimozi k\u00f6zpontot, de egy teljes k\u00f6r\u0171 akusztikai \u00e9s rendszerbe\u00e1ll\u00edt\u00e1si tan\u00e1csad\u00e1st is kapott a KTAudio-t\u00f3l. \u00c1tbesz\u00e9lt\u00fck a panellak\u00e1s-bar\u00e1t  m\u00e9lynyom\u00f3k fizik\u00e1j\u00e1t, az elhelyez\u00e9st, az \u00e1rkateg\u00f3ri\u00e1t, kerestem neki az ig\u00e9nyeihez \u00e9s az er\u0151s\u00edt\u0151j\u00e9hez passzol\u00f3 subwoofer, valamint a dr\u00e1ga digit\u00e1lis panelek v\u00e9delm\u00e9hez elengedhetetlen h\u00e1l\u00f3zati t\u00falfesz\u00fclts\u00e9g-v\u00e9delem k\u00e9rd\u00e9s\u00e9t is. Ez a projekt is bizony\u00edtja, hogy a r\u00e9szletekre val\u00f3 odafigyel\u00e9s \u00e9s a komponens szint\u0171 jav\u00edt\u00e1s nemcsak p\u00e9nzt\u00e1rcabar\u00e1t, de \u00e9vekkel k\u00e9pes meghosszabb\u00edtani a f\u00e9ltett audi\u00f3 eszk\u00f6zeink \u00e9lettartam\u00e1t.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"458\" src=\"https:\/\/www.ktaudio.hu\/blog\/wp-content\/uploads\/2026\/05\/onkyo_ht-r538_javitas-1-1024x458.jpg\" alt=\"\" class=\"wp-image-83\" srcset=\"https:\/\/www.ktaudio.hu\/blog\/wp-content\/uploads\/2026\/05\/onkyo_ht-r538_javitas-1-1024x458.jpg 1024w, https:\/\/www.ktaudio.hu\/blog\/wp-content\/uploads\/2026\/05\/onkyo_ht-r538_javitas-1-300x134.jpg 300w, https:\/\/www.ktaudio.hu\/blog\/wp-content\/uploads\/2026\/05\/onkyo_ht-r538_javitas-1-768x343.jpg 768w, https:\/\/www.ktaudio.hu\/blog\/wp-content\/uploads\/2026\/05\/onkyo_ht-r538_javitas-1.jpg 1029w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>A h\u00e1zimozi er\u0151s\u00edt\u0151k (AV receiverek) vil\u00e1ga h\u00edres arr\u00f3l, hogy a hatalmas bels\u0151 alkatr\u00e9sz-s\u0171r\u0171s\u00e9g \u00e9s a folyamatos h\u0151termel\u00e9s miatt ezek a k\u00e9sz\u00fcl\u00e9kek id\u0151vel sz\u00f3 szerint k\u00e9pesek &#8222;megenni&#8221; a saj\u00e1t forraszt\u00e1saikat. Nemr\u00e9g \u00e9rkezett a KTAudio m\u0171hely\u00e9be egy megb\u00edzhat\u00f3, 5.1 csatorn\u00e1s Onkyo HT-R538 r\u00e1di\u00f3er\u0151s\u00edt\u0151, amely egy meglehet\u0151sen bizonytalan \u00e9s \u00f6sszetett hibajelens\u00e9get produk\u00e1lt: A tulajdonos\u00e1n\u00e1l a k\u00e9sz\u00fcl\u00e9k ugyan elindult, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pagelayer_contact_templates":[],"_pagelayer_content":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[9,13],"tags":[],"class_list":["post-82","post","type-post","status-publish","format-standard","hentry","category-esettanulmanyok","category-hifi-szerviz"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A s\u00fcket tuner \u00e9s a rejtett Joule-h\u0151: Egy Onkyo HT-R538 AV receiver \u00fajj\u00e1sz\u00fclet\u00e9se - KTAudio Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ktaudio.hu\/blog\/2026\/05\/24\/a-suket-tuner-es-a-rejtett-joule-ho-egy-onkyo-ht-r538-av-receiver-ujjaszuletese\/\" \/>\n<meta property=\"og:locale\" content=\"hu_HU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A s\u00fcket tuner \u00e9s a rejtett Joule-h\u0151: Egy Onkyo HT-R538 AV receiver \u00fajj\u00e1sz\u00fclet\u00e9se - KTAudio Blog\" \/>\n<meta property=\"og:description\" content=\"A h\u00e1zimozi er\u0151s\u00edt\u0151k (AV receiverek) vil\u00e1ga h\u00edres arr\u00f3l, hogy a hatalmas bels\u0151 alkatr\u00e9sz-s\u0171r\u0171s\u00e9g \u00e9s a folyamatos h\u0151termel\u00e9s miatt ezek a k\u00e9sz\u00fcl\u00e9kek id\u0151vel sz\u00f3 szerint k\u00e9pesek &#8222;megenni&#8221; a saj\u00e1t forraszt\u00e1saikat. Nemr\u00e9g \u00e9rkezett a KTAudio m\u0171hely\u00e9be egy megb\u00edzhat\u00f3, 5.1 csatorn\u00e1s Onkyo HT-R538 r\u00e1di\u00f3er\u0151s\u00edt\u0151, amely egy meglehet\u0151sen bizonytalan \u00e9s \u00f6sszetett hibajelens\u00e9get produk\u00e1lt: A tulajdonos\u00e1n\u00e1l a k\u00e9sz\u00fcl\u00e9k ugyan elindult, [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ktaudio.hu\/blog\/2026\/05\/24\/a-suket-tuner-es-a-rejtett-joule-ho-egy-onkyo-ht-r538-av-receiver-ujjaszuletese\/\" \/>\n<meta property=\"og:site_name\" content=\"KTAudio Blog\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-24T11:58:44+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-24T11:58:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ktaudio.hu\/blog\/wp-content\/uploads\/2026\/05\/onkyo_ht-r538_javitas-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1029\" \/>\n\t<meta property=\"og:image:height\" content=\"460\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"thomace\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Szerz\u0151:\" \/>\n\t<meta name=\"twitter:data1\" content=\"thomace\" \/>\n\t<meta name=\"twitter:label2\" content=\"Becs\u00fclt olvas\u00e1si id\u0151\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 perc\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.ktaudio.hu\\\/blog\\\/2026\\\/05\\\/24\\\/a-suket-tuner-es-a-rejtett-joule-ho-egy-onkyo-ht-r538-av-receiver-ujjaszuletese\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.ktaudio.hu\\\/blog\\\/2026\\\/05\\\/24\\\/a-suket-tuner-es-a-rejtett-joule-ho-egy-onkyo-ht-r538-av-receiver-ujjaszuletese\\\/\"},\"author\":{\"name\":\"thomace\",\"@id\":\"https:\\\/\\\/www.ktaudio.hu\\\/blog\\\/#\\\/schema\\\/person\\\/b3f04879acad6738c75e79b969025904\"},\"headline\":\"A s\u00fcket tuner \u00e9s a rejtett Joule-h\u0151: Egy Onkyo HT-R538 AV receiver \u00fajj\u00e1sz\u00fclet\u00e9se\",\"datePublished\":\"2026-05-24T11:58:44+00:00\",\"dateModified\":\"2026-05-24T11:58:45+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.ktaudio.hu\\\/blog\\\/2026\\\/05\\\/24\\\/a-suket-tuner-es-a-rejtett-joule-ho-egy-onkyo-ht-r538-av-receiver-ujjaszuletese\\\/\"},\"wordCount\":963,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.ktaudio.hu\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.ktaudio.hu\\\/blog\\\/2026\\\/05\\\/24\\\/a-suket-tuner-es-a-rejtett-joule-ho-egy-onkyo-ht-r538-av-receiver-ujjaszuletese\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.ktaudio.hu\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/onkyo_ht-r538_javitas-1-1024x458.jpg\",\"articleSection\":[\"Esettanulm\u00e1nyok\",\"Hifi Szerviz\"],\"inLanguage\":\"hu\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.ktaudio.hu\\\/blog\\\/2026\\\/05\\\/24\\\/a-suket-tuner-es-a-rejtett-joule-ho-egy-onkyo-ht-r538-av-receiver-ujjaszuletese\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ktaudio.hu\\\/blog\\\/2026\\\/05\\\/24\\\/a-suket-tuner-es-a-rejtett-joule-ho-egy-onkyo-ht-r538-av-receiver-ujjaszuletese\\\/\",\"url\":\"https:\\\/\\\/www.ktaudio.hu\\\/blog\\\/2026\\\/05\\\/24\\\/a-suket-tuner-es-a-rejtett-joule-ho-egy-onkyo-ht-r538-av-receiver-ujjaszuletese\\\/\",\"name\":\"A s\u00fcket tuner \u00e9s a rejtett Joule-h\u0151: Egy Onkyo HT-R538 AV receiver \u00fajj\u00e1sz\u00fclet\u00e9se - 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