rebuild kit

Discussion in 'McIntosh Audio' started by Bob in WI, Mar 15, 2017.

  1. Bob in WI

    Bob in WI AK Subscriber Subscriber

    Messages:
    2,060
    Location:
    Waukesha, Wisconsin USA
    I'm soon to be the owner of a MX112. My understanding is its all original & I want to get the MX112 in good order before I set it up. My neighbor is an accomplished electronics tech but not an audio guy. Does anyone sell rebuild kits with new caps & etc or does each piece need to be individually sourced. I want to make this as easy as possible for my neighbor. I trust Dave to do a perfect job but recognize he may not be super familiar with audio components.

    Thanks
    Bob
     
  2. Bob in WI

    Bob in WI AK Subscriber Subscriber

    Messages:
    2,060
    Location:
    Waukesha, Wisconsin USA
    OK. I'm taking the non response as rebuild kits are not available.
     
  3. mnmmt

    mnmmt New Member

    Messages:
    34
    I am not aware of one. I just refreshed my MX114, which is the FM only version of the MX112. I compiled a list of electrolytics from the back of the service manual, ordered them from Digikey (in Thief River Falls, MN), and installed them myself. For the power supply caps, I got Panasonic FM or FC caps, and for the audio caps on the boards, I used Nichicon audio caps. The volume control needed a couple shots of F5 faderlube to clear it up. The lights all work, and it sounds good now. The tuner section in mine is good and strong, so I am not planning on having an alignment done yet.

    To save yourself extra postage, you may want to crack it open, check out the resistors etc. then compile and order your list--I've ordered caps before in anticipation of working over a piece of equipment, and then when going through the unit found resistors or other components that are in need of replacing and then had to order a second batch of parts.
     
  4. Bob in WI

    Bob in WI AK Subscriber Subscriber

    Messages:
    2,060
    Location:
    Waukesha, Wisconsin USA
    Thanks MN. My unit is sched for delivery Friday. I'm pretty excited about it. Appreciate the advise.
     
  5. dshoaf

    dshoaf That high voltage buzz

    Messages:
    9,606
    Location:
    Santa Cruz, CA
    I've never seen any vendor offering MX-112 kits. One of the problems as Mnmmt points out is that there may have been circuit changes made to the units while units flowed down the assembly line. These would be documented in Service Bulletins issued by McIntosh. Attempting to make rebuild kits with all the variances that would entail would be difficult.

    Agree with Mnmmt, get the unit in hand and asses it first. Post pictures here if you have questions or need clarification. There are Mac restoration specialists for a reason - they understand the nuances and how new parts can be substituted for anything that's no longer available for the older gear.

    Cheers,

    David
     

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