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marantz 140

  1. artsybob

    Marantz 3200 Preamp and 140 Amp Score + Questions

    Hello all! Last summer a former work colleague of mine was relocating across country and decided to give me his old audio equipment for free- including a Marantz Model 140 power amp. After a little while I decided to locate a matching Model 3200 preamp to go with it and to assemble a nice solid...
    • artsybob
    • Thread
    • 1970s marantz marantz 140 marantz 3200 solid state
    • Replies: 1
    • Forum: Marantz Audio
  2. C

    Running a Marantz 2230 with Marantz 140

    i am currently running my marantz model 140 power amp into the unswitched outlet on the back of the marantz 2230 and have been doing so for a few years now. the 140 doesn't have a power switch so i figured this would be an okay way to do things. i just recently realized that the unswitched...
  3. Morgan250

    Marantz 3200 restoration buzz one channel.

    Hello everybody, I have completely restored a MARANTZ 3200/140 set. I was inspired by the restoration of Patfont's, by the way, a big thank you! My set works perfectly, a warm and detailed song as I like :) I just have a small problem, on the left track I have a slight buzz. It comes from the...
  4. L

    Marantz 140 + Marantz 3600 combo - Left channel issues

    Hello there, I created a few post regarding my Marantz 140 under "Solid State" here in AK website and a user told me to submit my issue here. Here my situation : I acquire a Marantz combo 140/3600 from eBay in the last 3 years, which is a very good combo and I really like it. But, for random...
  5. L

    Marantz 140/3600 combo - Right channel issues

    Hello! My combo Marantz 140/3600 was running for severals hours and the right channel was suddenly very quiet. I put the slider to the right channel to hear something and I need to push the volume knob up to 1/2 to begin to have sounds (distortionned sound on each bass/beat). I played with the...
  6. L

    Marantz 140 - 2 ohm load

    Hello! I have a Marantz 140 with new main caps ( 2 x 15 000uf Mundorf) also 100% recapped and I'm wondering if I can run the 140 with my actual pair of Cerwin Vega D7 with a pair of Cerwin Vega D9 (system A + B from Marantz 3600). Am I better to add a second Marantz 140 to run the D9s? I heard...
  7. L

    Marantz 140 - BIAS not stable

    Hello ! My Marantz 140 seems having issue regarding the BIAS adjustement on the left channel. It lose his adjustement every 2 or 3 months (goes to +50mv). Yesterday, I was worried of the temperature because the left side was hotter than the right side. After adjustement, the left side BIAS goes...
  8. B

    REPLACING CAPACITORS ON MARANTZ 140 POWER AMP

    Hello guys, i would really appreciate any advice regarding my attempt to replace the big capacitor on Marantz 140 with 2 x 10 000uF/63V instead 13 000uF that comes from the factory.Since that dual 13 000uf isn't available i have 2 new audiograde caps Matushita 10 000uF gold audiograde.Will the...
    • Bogdan1986
    • Thread
    • capacitors diy help marantz 140 newbie power amp
    • Replies: 8
    • Forum: DIY
  9. B

    Marantz 140 Adjusting DC offset and bias ?

    Hello guys,im new to this kind of things regarding electronic repairing etc etc, can someone tell me how can i adjust the bias on my Marantz 140? Where do i connect dvm, on which pins ?I have the manual, but to me its unclear where should i connect the digital multimeter in order to adjust the...
    • Bogdan1986
    • Thread
    • bias dc offset help marantz 140
    • Replies: 6
    • Forum: DIY
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