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  1. W

    What's This from a HK 730

    Recently received my NEW/OLD Harman Kardon 730. I'm pretty adept at mechanical and electrical. I needed to take off the front in order to get to the push button switches which were in poor shape and were causing dropouts and noise. Lamps were out as well and function selector switch needed a...
  2. dlucy

    Harman Kardon 730 and A-402 - PHONO stage differences?

    There's a great question just asked: the HK 730 and HK A-402 power amp stages are very similar; the Harman Kardon 730 receiver's PHONO stage, when recapped, is awesome; is the PHONO stage in the HK A-402 integrated amp the same as the one in the 730? Let's take a look: The HK 730 PHONO stage...
    • dlucy
    • Thread
    • 730 a-402 hk 730 hk a-402
    • Replies: 4
    • Forum: Solid State
  3. F

    HK 730 Twin - recapped tuner now it doesn't work

    I recapped the tuner on my HK 730 Twin - I was careful to ensure every cap was oriented correctly the right value. What's the best course of action to track down the issue?
  4. robz2000

    Harman Kardon 730 stereo bulb driver

    I think an old dead bulb shorted the stereo light in a Harman Kardon 730. If I ground directly to chassis it lights up fine. And of course stays lit. Getting @12v from the striped orange cable. Do any of you know what part of the system turns on/off the stereo bulb? Hoping maybe it's one or two...
  5. dlucy

    dlucy's guide to Harman Kardon Twin Powered series 430, 630, 730 and 930 ... and Montgomery Ward 450

    The fourth era of Harman Kardon's solid state stereo receivers were the Twin Powered series: This thread is a guide to those models, their specs, and pointers to schematics and restoration threads for each. Note: If you have additional information on any of these models or have a great...
    • dlucy
    • Thread
    • 430 630 730 930 harman kardon harman kardon 430 harman kardon 630 harman kardon 730 harman kardon 930 hk
    • Replies: 24
    • Forum: Solid State
  6. Jackassrock

    A little help with a H&K 730

    I have a 730 with a problem. One of the channels keeps blowing a fuse. Sometimes a new one will last a second, sometimes a week. I've taken it to a couple shops, and they will think they fixed it. They will test and everything, but within a week, it always blows the fuse again. Any ideas what...
  7. H

    HK 730 / No Tuner

    I recently purchased a Harmon Kardon 730 receiver. It arrived damaged and the seller told me that there's "Nothing he can do about it". I want to try to fix the tuner myself and am hoping that someone can provide helpful information. Here's the problem: All inputs work fine, except the...
    • hmattyj
    • Thread
    • 730 harmon kardon no tuner repair
    • Replies: 8
    • Forum: Solid State
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