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kenwood kr-9400

  1. J

    Kenwood KR-9400 amp board modifications

    Hello everyone, I’m new to the whole stereo and receiver world, but have been involved in electronic repairs for around 10 years. A friend of mine asked me to try to find out what’s wrong with his Kenwood KR-9400. Being 27, I’m, not too familiar with the old age electronics, and definitely don’t...
  2. A

    Kenwood KR-9400 Still Blowing Fuse

    I bought a KR-9400 knowing it wasn't working and I'm trying to repair it myself. I replaced the transistors (all 8 on both heat sinks) but it still blows fuses. I noticed two of the MPC71 resistors are also blown. I read through the service bulletin, and my unit doesn't have the same jumpers and...
  3. BHaines

    Kenwood KR-9400 LOUD poping noise left channel

    Would appreciate some help on this one... Just moved to my new house, setting up my stereo room, turn on my KR-9400 and BOOM! Massive pops/cracks coming only from the left channel. Took it about 15 seconds to start after I first turned the receiver on. Happens with volume all the way down...
    • BHaines
    • Thread
    • capacitor kenwood kenwood kr-9400 pops and cracks power amp transistor replacement
    • Replies: 3
    • Forum: Solid State
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