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MC 2125 meters dark in center

Discussion in 'McIntosh Audio' started by Jack Fedor, Jul 7, 2018.

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  1. Jack Fedor

    Jack Fedor New Member

    Messages:
    1
    I could use some help with the meters in my 2125 they are brownish in the center when they are on.I have replaced the lamps with blue led's but still the same.Is there a paper in between the lamps and the rear of the meters and how do I replace them
     

     

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  2. c_dk

    c_dk Addicted Member

    Messages:
    6,240
    Location:
    West Michigan
    Very very carefully......the lamp housing will fall apart if you fuss with them in almost all cases. Years ago I believe I posted pics of Mc2125 lamp cases in dozens of pieces.

    That said there are 3 gels that make up the color for the meters located inside the light boxes. The clearest least tinted ones turn brown, they are usually between the two colored ones which leads me to believe it is not caused by heat but by UV.
     
  3. MACKIE1975

    MACKIE1975 Well-Known Member

    Messages:
    755
    Picture please.
     
  4. sKiZo

    sKiZo Hates received: 8642 Subscriber

    [​IMG]

    Oh, wait ... were you talkin' to me? <G>

    Discolored gels are a fairly common problem though ...
     
  5. clinic-audio

    clinic-audio all on YAMAHA untill 1990

    Messages:
    2,180
    Location:
    France
    Hello

    using led is understandable but I will not recommend it . Your problem is coming from the gel , it is burned and turn to brown ...
    Regarding heat in the light boxes all problem disapear with manufacturing them in the right material

    MC2125-and-MC2155-meter-housing.JPG MC2125-MC2155-meter-housing-new.JPG MC2125-MC2155-meter-housing-new-inside-view.JPG MC2125-meter-rear-view.JPG
     
    ossidian likes this.
  6. MACKIE1975

    MACKIE1975 Well-Known Member

    Messages:
    755
    Where can you get the re-manufacture box? That is sleek.
     

     

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  7. VintageMac

    VintageMac McIntosh Junkie

    Messages:
    439
    Location:
    Portland, Oregon
    Patrice makes them!

    Larry
     
  8. whitebuffalo

    whitebuffalo New Member

    Messages:
    2
    Location:
    Arkansas
    I need a couple of the meter cases also, where can you get them. I am just now getting into McIntosh, bought a MC2125 at a very good price at a garage sale. And of course I then had to buy a C38 to go with it. I was replacing bulbs on the 2125 and noticed that it has no filters inside the meter, just a piece of blue tinted glass in the front. Any help would be great. Also notice a couple of diodes where cooked on the meter board so I have ordered a service manual.
     
  9. sKiZo

    sKiZo Hates received: 8642 Subscriber

    While you're in there, be sure and clean the wire terminals at the back. Well known for causing intermittent problems,

    [​IMG]
     
  10. whitebuffalo

    whitebuffalo New Member

    Messages:
    2
    Location:
    Arkansas
    sKiZo, thanks for the heads up. I will definitely do this, anything else you can think of?
     

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