Triac for a McIntosh MA5100

Discussion in 'McIntosh Audio' started by manito, Apr 2, 2018.

  1. manito

    manito New Member

    Messages:
    30
    Location:
    South of the Border
    I am trying to restore a MA5100 and between the parts that my amplifier needs is a triac with part number 131-001 (according to the service manual) In another post where they restore a Mac 1900 with the same part number 131-001, the owner says that he bought 2 triacs from McIntosh and they sent him one with part number NTE 5623, does any of you know how it connects? some photo?

    http://audiokarma.org/forums/index.php?threads/triac-for-a-mcintosh-1900.262847/

    upload_2018-4-2_18-46-5.png

    upload_2018-4-2_18-42-36.png
     

     

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  2. clinic-audio

    clinic-audio all on YAMAHA untill 1990

    Messages:
    1,919
    Location:
    France
    Hello

    The original component 131001 is GE SC41F obsolete since a long time . The component in picture sent by the factory is a substitute used in MA6100 .
    You can use it in your MA5100 respecting place of each pin
    see my pictures

    MA5100-043-821-protection-pcb.JPG


    MA5100-043-821-output-protection-pcb.JPG
     
    Last edited: Apr 3, 2018
    CruzBay likes this.
  3. manito

    manito New Member

    Messages:
    30
    Location:
    South of the Border
    Thank you very much for the information, I am making a list of parts that I need to buy online and when they arrive I will install it that way.
     
  4. manito

    manito New Member

    Messages:
    30
    Location:
    South of the Border
    I have been looking for a subtitle for the TRIAC NTE5623 (VDRM: 100V / Vgt: 2V / Igt: 50mA) and I have only found in mouser: 863-T2500DG (VDRM: 400V / Vgt: 2.5V / Igt: 60mA) and the 863 -T2800DG (VDRM: 400V / Vgt: 2V / Igt: 60mA), can someone help me to choose the right one?
     
    Last edited: Apr 13, 2018
  5. clinic-audio

    clinic-audio all on YAMAHA untill 1990

    Messages:
    1,919
    Location:
    France
    Sorry , but why do you want to buy something else when you have already bought the part supplied by the factory and perfectly usable in your MA5100 ??
    Why looking for a 400V triac when the MA6100 original is perfectly working ??
     
  6. manito

    manito New Member

    Messages:
    30
    Location:
    South of the Border
    I found this amplifier in poor conditions and without some pieces so I have given myself the task of getting them little by little, in the photo that I upload to the forum it is missing one of the two triacs that come in that card you can also see that is none of the 4 fuses. I tried to collect some piece that would replace the NTE 5623 because in the mouser parts page I did not find that triac specifically, however I found it in a spare parts store in my city, that was something surprising! regularly nothing is found here. Once I have installed it I will upload the photo to ask for their opinions.
     

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