{"id":539,"date":"2021-01-06T01:24:21","date_gmt":"2021-01-06T00:24:21","guid":{"rendered":"https:\/\/www.ciberpucela.com\/wp1\/?p=539"},"modified":"2022-02-26T21:51:04","modified_gmt":"2022-02-26T20:51:04","slug":"zx-spectrum-s-video-modulator-replacement-mejorar-video-en-zx-spectrum","status":"publish","type":"post","link":"https:\/\/www.ciberpucela.com\/wp1\/2021\/01\/06\/zx-spectrum-s-video-modulator-replacement-mejorar-video-en-zx-spectrum\/","title":{"rendered":"ZX Spectrum S-Video Modulator Replacement. Mejorar video en ZX Spectrum"},"content":{"rendered":"\n\n[et_pb_section fb_built=\u00bb1″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_text _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb]

Hola. Hoy mismo me ha llegado un kit llamado \u00abZX Spectrum S-Video Modulator Replacement<\/a>\u00bb que adquir\u00ed en la tienda \u00abtindie\u00bb, tengo que decir que ha venido muy bien embalado y con los componentes bien identificados y protegidos. Tengo un par de Spectrum ya viejos a los que resulta imposible sintonizar por cable de antena. Tengo alg\u00fan otro al que le hecho el mod para sacarle video compuesto, pero en esta ocasi\u00f3n quer\u00eda probar algo nuevo; me encontr\u00e9 el kit navegando, y al ver que es s-video considero que se debiera ver mejor que solo el video compuesto; la mejora radica en que en s-video las se\u00f1ales de luminancia (brillo) y crominancia\u00a0 (colores) van separadas al contrario que sucede con el v\u00eddeo compuesto. Ni que decir tiene que ser\u00e1 mucho mejor que la se\u00f1al de radio frecuencia que genera el modulador. Este kit exige eliminar el modulador y en su lugar poner el kit montado.<\/p>\n

Est\u00e1 documentado en :<\/p>\n

github.com<\/a><\/p>\n

He aqu\u00ed el esquema:<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_image src=\u00bbhttps:\/\/www.ciberpucela.com\/wp1\/wp-content\/uploads\/2021\/01\/s-video_speccy_esquema_vD.png\u00bb alt=\u00bbEsquema Kit.\u00bb title_text=\u00bbs-video_speccy_esquema_vD\u00bb _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb animation_style=\u00bbroll\u00bb][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_text _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb]

Os muestro los componentes y el circuito una vez montado con paciencia, esta\u00f1ador y pinzas:<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_gallery gallery_ids=\u00bb550,551,552″ fullwidth=\u00bbon\u00bb _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb animation_style=\u00bbslide\u00bb caption_text_shadow_style=\u00bbpreset1″][\/et_pb_gallery][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_text _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb]

Ahora llega la hora de abrir nuestro querido Speccy.\u00a0<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_gallery gallery_ids=\u00bb553,554,555,556,557,558,560,561,562,563,564,565,566″ posts_number=\u00bb13″ show_pagination=\u00bboff\u00bb _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb caption_font=\u00bb|700|||||||\u00bb caption_text_align=\u00bbcenter\u00bb caption_text_color=\u00bb#ffffff\u00bb caption_font_size=\u00bb17px\u00bb caption_line_height=\u00bb16px\u00bb background_enable_color=\u00bboff\u00bb background_image=\u00bbhttps:\/\/www.ciberpucela.com\/wp1\/wp-content\/uploads\/2021\/01\/general-fondo-pistas.png\u00bb parallax=\u00bbon\u00bb background_layout=\u00bbdark\u00bb animation_style=\u00bbroll\u00bb animation_speed_curve=\u00bbease\u00bb caption_text_shadow_style=\u00bbpreset5″ caption_text_shadow_color=\u00bb#0c71c3″ text_shadow_style=\u00bbpreset3″ text_shadow_blur_strength=\u00bb0.44em\u00bb][\/et_pb_gallery][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_text _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb]

\u00bfy funciona?<\/h3>\n

Pues la verdad es que no. Despu\u00e9s de ver que sal\u00eda el mensaje de sinclair y puesto que la imagen es en blanco y negro, us\u00e9 el teclado para cambiar los colores del borde, y sorpresa no se ven los colores.<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_image src=\u00bbhttps:\/\/www.ciberpucela.com\/wp1\/wp-content\/uploads\/2021\/01\/s-video_speccy_018-scaled.jpg\u00bb alt=\u00bb\u00bfDe verdad funciona?. Pues va ser que no.\u00bb title_text=\u00bbs-video_speccy_018″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb animation_style=\u00bbfold\u00bb][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_text _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb custom_padding=\u00bb15px|||||\u00bb]

<\/p>\n

Seg\u00fan un folleto adjunto al kit en esta versi\u00f3n de placa han visto problemas y por ello recomiendan cambiar los transistores previos al video (TR1 y TR2), ver detalle esquema placa madre issue 4a:<\/p>\n

<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_image src=\u00bbhttps:\/\/www.ciberpucela.com\/wp1\/wp-content\/uploads\/2021\/01\/s-video_speccy_detalle_TRyTR2_esquema_vD.png\u00bb alt=\u00bbdetalle TR1 y TR2 esquema Issue 4A.\u00bb title_text=\u00bbdetalle TR1 y TR2 esquema Issue 4A.\u00bb _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb animation_style=\u00bbzoom\u00bb][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_text _builder_version=\u00bb4.9.4″ _module_preset=\u00bbdefault\u00bb hover_enabled=\u00bb0″ sticky_enabled=\u00bb0″]

Como podemos ver los transistores TR1 y TR2 del esquema son iguales y tal y como describe el vendedor en su folleto son iguales, ZTX313, buscando he visto que son de Ferranti (si el mismo que fabrivaba la ULA) y son caros y d\u00edficiles de encontrar.<\/p>\n

As\u00ed que buscando un poco he visto una p\u00e1gina web<\/a> en la que sugieren otros transistores equivalentes. As\u00ed que he localizado los BC183 en ebay y los he pedido.<\/p>\n

Cuando lleguen ya los probare y os cuento si ya se ve a color.<\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb][et_pb_text _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb]

!!Pues al final funciona.!!<\/h3>\n

El d\u00eda que hice el montaje en previsi\u00f3n de iba a usar este circuito en 3 Spectrums compr\u00e9 3 cables S-VHS<\/a> y 3 adaptadores de S-video a Scart 21<\/a>\u00a0y me han llegado hoy 8 de Enero 2021; pues con ellos me he ido a probarlos en el Speccy modificado; !Y.. sorpresa!! al usar ambos el color apareci\u00f3 en pantalla. Intercambi\u00e9 tanto el cable como el adaptador por los elementos viejos que us\u00e9 el primer d\u00eda, y he llegado a la conclusi\u00f3n de que el cable usado el primer d\u00eda no est\u00e1 bien. Ante la duda de que faltase continuidad en la se\u00f1al de croma, he comprobado pin a pin ambos extremos del cable antiguo y parece OK. No se hay alguna diferencia en las calidades, espesores de cobre etc. La \u00fanica diferencia que veo es la longitud del cable; el viejo med\u00eda unos 120 cm y el nuevo 300.<\/p>[\/et_pb_text][et_pb_image src=\u00bbhttps:\/\/www.ciberpucela.com\/wp1\/wp-content\/uploads\/2021\/01\/s-video_speccy_019-scaled.jpg\u00bb alt=\u00bbSpectrum imagen s-video s-VHS\u00bb title_text=\u00bbs-video_speccy_019″ _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb animation_style=\u00bbflip\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00bb4.7.7″ _module_preset=\u00bbdefault\u00bb]

De todos modos aunque la imagen se v\u00e9 mucho mejor que por la antena, creo que debiera ser mejor; as\u00ed que puede que cuando lleguen los transistores acometa el cambio de TR1 y TR2.<\/p>\n

Para ver mas art\u00edculos en mi blog<\/a> puedes navegar por los men\u00fas o ir al dominio principal. Espero te guste.<\/strong><\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00bb1″ _builder_version=\u00bb3.23.3″][et_pb_row _builder_version=\u00bb3.25″][et_pb_column type=\u00bb4_4″ _builder_version=\u00bb3.25″ custom_padding=\u00bb|||\u00bb custom_padding__hover=\u00bb|||\u00bb][et_pb_comments _builder_version=\u00bb3.23.3″ background_color=\u00bb#d2edf9″ custom_button=\u00bbon\u00bb button_text_color=\u00bb#0400f0″ button_bg_color=\u00bb#ffffff\u00bb button_border_color=\u00bb#0400f0″ button_border_radius=\u00bb36px\u00bb button_font=\u00bb||||||||\u00bb button_icon=\u00bb%%36%%\u00bb button_icon_color=\u00bb#0400f0″][\/et_pb_comments][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n\n","protected":false},"excerpt":{"rendered":"

Hola. Hoy mismo me ha llegado un kit llamado \u00abZX Spectrum S-Video Modulator Replacement\u00bb que adquir\u00ed en la tienda \u00abtindie\u00bb, tengo que decir que ha venido muy bien embalado y con los componentes bien identificados y protegidos. Tengo un par de Spectrum ya viejos a los que resulta imposible sintonizar por cable de antena. Tengo […]<\/p>\n","protected":false},"author":1,"featured_media":559,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"793","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[27,32],"tags":[45,35,58,78,79,80,43,44,77,59],"class_list":["post-539","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronica","category-zx-spectrum","tag-best-video-in-zx-spectrum","tag-celestinox","tag-mejora-video-zx-spectrum","tag-reemplazo-modulador-zx-spectrum","tag-s-video-for-zx-spectrum","tag-s-video-para-zx-spectrum","tag-zx-spectrum","tag-zx-spectrum-48k","tag-zx-spectrum-modulator-replacement","tag-zx-spectrum-s-video-modulator-replacement"],"yoast_head":"\r\nZX Spectrum S-Video Modulator Replacement. Mejorar video en ZX Spectrum - Blog personal de Celes<\/title>\r\n<meta name=\"description\" content=\"Cambia ese modulador que no funciona de tu ZX Spectrum 48 o plus por este circuito SMD que te da se\u00f1al s-video.\" \/>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/www.ciberpucela.com\/wp1\/2021\/01\/06\/zx-spectrum-s-video-modulator-replacement-mejorar-video-en-zx-spectrum\/\" \/>\r\n<meta property=\"og:locale\" content=\"es_ES\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"ZX Spectrum S-Video Modulator Replacement. 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