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marantz 250m

  1. quadmatrix82

    Marantz 250M - odd resistor values in circuit

    Hi all, so I have been doing some preventative maintenance on my Marantz 250M which seems to work well however I have noticed the left channel has many resistors that test low in circuit compared with the right channel - when tested out of circuit all these resistors measure fine. what could be...
  2. goldswimmerb

    Absolutely butchered 250M

    Just got this beast on the bench, going to be a hell of a project for sure. Non matching outputs (who though throwing a phase linear custom in here was a good idea???) don't even know what's going on here. Side with phase linear Transistor is unplugged, guessing it's fried, other side with...
  3. parkjv1

    Looking for Experienced Marantz Technician

    Aloha All, Living in Hawaii has its disadvantages when it comes to getting Equipment fixed. We do not have technicians on island. Long story short, I have a Marantz 250M that has some damage from shipping. The seller has submitted a claim and I’m wait for that to process. However, it doesn’t...
  4. parkjv1

    Marantz 250M as a mono block?

    Aloha all, In my quest to complete my Vintage Marantz system, I purchased a completely restored 250M Amp on EBay! It was shipped from Wisconsin on March 26th. A few days ago, The seller filed a claim on my request as it appeared to be lost in shipment, no new updates were received as of March...
  5. goldswimmerb

    250M DC offset question

    I recently got a 250M that was allegedly serviced, I can tell, to an extent, that that was true as many if the capacitors have been replaced. However, I was testing today and figured I would check the DC offset, one channel was at 15mv and the other was around 40mv, should I worry about this...
  6. goldswimmerb

    Marantz 250m lamps

    Hey, so I recently aquired a 250M for a decent price online, it arrived, allegedly serviced, but with terribly dark blue LEDs installed. I want to swap back over to incandescent, or at the very least warm white LEDs, but my question is, how do you get to the bulbs in this model? I see all kinds...
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