Есть регуль RM-303(написано на плате)
Неисправность заключается в поспоянном вращении двигателя.
ППМ поступает, провода исправны, микрухи меняные, эффекта нет.
На плате 2 микросхемы:LM339 и CD40106, 60N03L
Фотография очень не резкая, через лупу фотай. Или режим макросъёмки нужно применять, подбирать расстояние до объёкта.
Там немного видно, что транзистор справа вверху, сгоревший, вот из-за этого и не работает регулятор. Сделай качественную фотку, что бы номиналы делалей было видно, тогда можно сказать более точно.
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