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Case 4563728 . 02/01/2023 . Marantz PM-5 amplifier repair .

Works on maximum volume level only and no left channel.
Protection relay replacement solved problem.
Pluses – good attention to phono input. MC and MM phono inputs available.Good for phonograph players .Support MM and MC phonograph cartridges. Massive heat sink inside , good and stable sound.
Minuses – chaotic board management design inside, sandwich boards installation in central area with overheating on bottom board.