Светодиодные прожекторы. Вскрываем, определяем тип драйвера и соединения, меняем светодиоды.

Major Tom Workshop November 9, 2020
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ПОДДЕРЖАТЬ КАНАЛ (ЮMoney): https://musicboy.ru/majortomworkshop КАРТА СБЕР: 5336 6900 6775 7700 https://boosty.to/majortom https://t.me/majortomworkshop ЗАКАЗАТЬ Футболку, Кепку, Аксессуары с символикой канала БОЛЬШАЯ МАСТЕРСКАЯ ТОМА: https://majortomworkshop.printdirect.ru Реклама. ООО "АЛИБАБА.КОМ (РУ)", ИНН 7703380158: ЗАКАЗ КОМПОНЕНТОВ: ► Драйверы https://rz6.ru/161?erid=2SDnjdU5bG4 ► COB матрица с драйвером https://rz6.ru/64?erid=2SDnjdD4HcU ► Преобразователь 3-45в https://rz6.ru/48?erid=2SDnjeuFdLL ► Драйвер 250-300 мА https://rz6.ru/50?erid=2SDnjcDbbhz ► Драйвер до 1500 мА https://rz6.ru/51?erid=2SDnjcPyWgQ ► СВЕТОДИОДЫ 3014/4014 https://rz6.ru/56?erid=2SDnjbwJk3z ► СВЕТОДИОДЫ 3020 https://rz6.ru/57?erid=2SDnjcC8csS ► СВЕТОДИОДЫ 3030 https://rz6.ru/58?erid=2SDnjdZr8St ► СВЕТОДИОДЫ 3528 https://rz6.ru/59?erid=2SDnjcYtSpG ► СВЕТОДИОДЫ 3535 https://rz6.ru/60?erid=2SDnjcgJPDz ► СВЕТОДИОДЫ 5050 https://rz6.ru/61?erid=2SDnjcrgJCQ ► СВЕТОДИОДЫ 5730 https://rz6.ru/62?erid=2SDnjd34DAp ЗАКАЗ ОБОРУДОВАНИЯ ► БЛОК ПИТАНИЯ DPS-5020 https://rz6.ru/0?erid=2SDnjdoD2Rn ► ПАЯЛЬНИК из видео https://rz6.ru/1?erid=2SDnjcKTrY8 ► Паяльник с олово-отсосом https://rz6.ru/2?erid=2SDnje4HgfS ► Паяльная станция с феном 702 https://rz6.ru/3?erid=2SDnjdEZctx ► ПАЯЛЬНЫЙ НАБОР https://rz6.ru/4?erid=2SDnjc4m2kp ► МУЛЬТИМЕТР https://rz6.ru/160?erid=2SDnjexHy5i ► ОСЦИЛЛОГРАФ https://rz6.ru/9?erid=2SDnjcbfLiU ► USB МИКРОСКОП https://rz6.ru/10?erid=2SDnjdbL7jE ► Набор монт. проводов https://rz6.ru/11?erid=2SDnjcFAxcp ► КЛЕЩИ ЗАЧИСТКИ https://rz6.ru/13?erid=2SDnjcnJhY4 ► КУСАЧКИ https://rz6.ru/14?erid=2SDnjcwCdE8 ► ОБЖИМКА https://rz6.ru/15?erid=2SDnjecdxUx Это видео посвящено ремонту светодиодных прожекторов. Вы увидите рассказ о типах драйверов прожекторов, как правильно подобрать новый драйвер и почему на нём указан интервал напряжений, как вскрыть прожектор с вклеенным стеклом, как правильно определить тип соединения и методику ремонта. 0:00 Светодиодные прожекторы. Драйверы, схемы соединения, вскрытие, ремонт. 0:25 Два типа матриц светодиодных прожекторов: интегральная и наборная. 1:07 Почему на драйвере светодиода указан интервал напряжений? Как правильно подобрать драйвер на замену? 2:25 Что такое обратная связь в блоках питания? 3:22 Зачем регулировать напряжение, если нужно регулировать ток? 4:18 Почему при выборе драйвера важно напряжение питания светодиодной матрицы? 5:27 Разбираем и диагностируем прожектор с интегральной COB матрицей. 6:00 Типичная неисправность COB сборок. Структура и нарушение внутренних соединений. 6:33 Коммутация светодиодов внутри COB матрицы. Почему после выгорания одного светодиода перегорает вся матрица? 7:33 Почему мерцает светодиодный прожектор? 8:38 Как убрать мигание светодиодного прожектора? 9:28 Можно ли отремонтировать COB матрицу? Замена на COB со встроенным драйвером. 10:28 Как правильно разобрать прожектор с вклеенным стеклом. 11:36 Разборка при помощи технологического отверстия на задней панели. 12:56 Изучаем обозначения на плате прожектора. Почему важна схема соединения и питания светодиодов? 13:45 Основные типы драйверов светодиодных прожекторов. Как определить тип драйвера? Что общего между прожектором и лампой E27? 14:28 Схема драйвера на базе RM9001E. Как работает этот драйвер? 15:25 Можно ли ремонтировать прожектор на основе RM9001E замыканием сгоревших светодиодов? 17:00 Секции с разным количеством светодиодов в RM9001E. Зачем? 18:30 Удаляем сгоревший светодиод и восстанавливаем цепь. Снижаем ток питания цепочки путём замены резисторов RS1-RS2. 19:35 Как определить сопротивление резистора RS1 для снижения тока светодиодов? 20:00 Устанавливаем конденсатор по питанию. Удаляем световые пульсации светодиодного прожектора. 20:27 Замена термопасты светодиодного прожектора. Почему в прожекторе плохой тепловой контакт? 21:03 Разбираем старый прожектор с классическими светодиодами и модульным драйвером. 21:28 Как соединены светодиоды в старом прожекторе? Параллельно или последовательно? 21:43 Плюсы и минусы параллельно-последовательного соединения светодиодов. Как при таком соединении распределяется ток между светодиодами? 22:30 Почему при параллельном соединении светодиоды быстро перегорают? 23:48 Меняем светодиод при помощи фена или зажигалки. Как правильно прогреть плату и не испортить элементы? 25:29 Как окончательно определить, что в данной схеме _можно_ замыкать сгоревшие светодиоды без ущерба для всей схемы? 26:37 Расскажите о вашем опыте ремонта светодиодных прожекторов! #major_tom_workshop #major_tom_music

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