• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

marantz 2250

  1. MartyGee666

    Marantz 2250 bias issues

    Hello! I'm having some issues with a Marantz 2250. Specifically the H005/H006 (HV0000212). Broken lead on original part. I'm seeing more than a few fixes on the internet, but without confirmation, I'm worried I'll blow a output transistor. Currently I have two 1N4007 diodes in series attached...
    • MartyGee666
    • Thread
    • bias diode h005 h006 hv0000212 marantz marantz 2250
    • Replies: 1
    • Forum: Solid State
  2. MartyGee666

    Marantz 2250 bias voltage

    Hello! I recapped a marantz 2250 and it's looking really good. However, I'm getting some wandering bias voltage on one channel. Testing at points J710 and J708, one channel has a steady 8mA. The other channel however wonders all over the place & it creates a static over the speakers when...
  3. drmazzei

    Marantz 2250

    Hello, I'm repairing a 2250 for a friend. My problem is that I'm not getting anywhere near the correct amount of DC to my P800 (J801, J803). I have checked the power supply caps and both have ESR=0.02 as well as capacitance above the rated 10,000 (11,910, 10900). I suspect that the bridge...
  4. gjr

    New, Old Guy Says Hello

    I've been reading and following AK for some time since retiring at the end of 2013. One of my first purchases after college in 1972 was a Marantz 2245 and AR 2ax's. Now I am enjoying restoring old stuff. My first post retirement project was to resurrect a pair of Speaker Lab K horns. I...
    • gjr
    • Thread
    • marantz 2010 marantz 2250 speaker lab k-horns yamaha ns-1000m
    • Replies: 17
    • Forum: Introductions
Back
Top Bottom