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4240

  1. jFF_Bulbo

    marantz 4240 pop

    hello everyone. I have a Marnatz 4240 under repair, the left amplifier failed and I was able to repair it, however a problem appeared that I had not noticed before working on it. When the selector (S001) is placed on the FM input, when the speakers are activated, it emits a very loud noise, even...
    • jFF_Bulbo
    • Thread
    • 4240 help marantz marantz trouble pop sound repair
    • Replies: 1
    • Forum: Marantz Audio
  2. J

    Marantz 4240 faulty channel

    Hi! I have a 4240 which the Front Left channel is giving me some problems.When you turn on the Marantz it starts making a cracking sound that completely blocks out all the audio from that channel. This sound does not change with volume or any configuration, the only thing that changes is that if...
  3. Traverso

    Marantz 4240 power amp issue

    I am here with a 4240 and faulty P800s. Some output transistors H001 to H004 are dead and I am looking for a replacement part The installed parts are SD315D and available at some Ebay but quite expensive unit price. Any TO 66 equivalent ? Any TO 220 replacement? What reference may I use...
  4. Traverso

    4240 line conversion

    Hello, Can anyone tell me how to make the line conversion from 220V AC to 240 AC for a 4240 quadri receiver. This info not available at the Service manual. Besides the 4240 PIC I Include the AC wiring as is now. Thanks a lot Alain
  5. T

    Marantz 4240 left channel sounds fuzzy and muffled - video link in posting

    Hi Gang! First time posting here, let me start by saying ahead of time that I respect and appreciate everyone's expertise here on AK. I have a wonderful old Marantz 4240 that has served me well over the years. Recently a friend came over to listen to a mix of some recordings he recently made...
    • the retro la
    • Thread
    • 4240 amplifier diagnosis left channel distortion marantz marantz 4240 muffled power amp problem
    • Replies: 5
    • Forum: Solid State
  6. Richs_Trains

    Marantz 4240 Quad Receiver Fader Issues

    Hello, I have a Marantz 4240 receiver that has a strange issue. All channels work fine but the front to rear fader seems to have no effect at all. Has anyone else experienced this problem before? I do not believe it to a dirty control because it really has no effect. There is no dropout or...
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