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nad 3140

  1. T

    NAD 3140 Output and Preamp(?) Problems

    Hello, First post so excuse any jitters. Picked up subject amp this week. Based on preliminary tests, determined that RH amp output channel is shot. OK, no issue output transistors are readily available. On further testing using a function generator on Aux/Tuner/Tape inputs and scope on the...
  2. alanl

    SOME INTERESTING TURNTABLE COMPARISONS

    I have been having a problem with a Dual 505/Ortofon 5E due to noise and/or signal failure on one channel. Initially I thought it was a fault in the (just repaired) NAD 3140 amp Or a speaker connection, but when playing a tape on a Kenwood deck all was well. There may be a cable or head-shell...
  3. n0exit

    Bose 901 Series II: pop when powered on

    I just picked up a pair of Bose 901 Series II with equalizer, and when I hook them up to my NAD 3140, I get a loud pop when I turn everything on. I recapped the NAD a couple years ago, and it doesn't pop with my KLH Model 3s. Is it safe to say that the Bose equalizer is the culprit? The...
    • n0exit
    • Thread
    • bose bose 901 nad nad 3140
    • Replies: 10
    • Forum: Speakers
  4. alanl

    Think I'm being ripped off

    I recently purchased an NAD 3140 amp that has some nasty noises associated with the selector switch. Sent it to a "specialist" service provider in Sydney who charged $99 just to evaluate it. Told me the power supply was "dangerous" and it needed new caps, fixing several dry solder joints and the...
  5. ADClosson

    From Yamaha to NAD to...? What's my next move?

    Greetings all, In a budget-minded attempt to improve my modest 2 channel system I've managed to take a step backward and could use some counsel on how to proceed from here. I started with an 80's Yamaha A-1000 integrated (not to be confused with the newer A-S1000) boasting 120 watts...
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