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harman kardon 730

  1. B

    Harman Kardon 730 - Debugging Stereo Lamp

    Hi there! I am in the process of debugging/fixing what I believe is likely a dead stereo lamp in my HK-730. I placed the probes of my multimeter across the top two male probes shown in the attached photo - no continuity. Am I checking for contintuity at the right location? Before I replace the...
  2. Jesse14

    Short??

    Polling the hive in hopes I can finally resolve this: I have a fully professionally restored Harman Kardon 730 that looks and sounds gorgeous. I use it mostly for vinyl, for which I use a Realistic Lab 400 which was professionally serviced prior to adding to my setup. The issue is that -...
    • Jesse14
    • Thread
    • ground short grounding issues harman kardon 730
    • Replies: 2
    • Forum: Solid State
  3. M

    Pop at the start and end - Dual 1229 and Harman Kardon 730 Not the capacitor!

    I need some trouble shooting help. Right now I have two H/K730's, both recently restored. I also have two Dual TT's - a 1219 and a 1229, both also restored. Both TT's pop at start up and at the end of cycle. But only on my H/K receivers. I also have a Sansui G-7700 and a Marantz 2250B, and...
    • Monteluna
    • Thread
    • dual 1219 dual 1229 harman kardon 730 turntable pop
    • Replies: 0
    • Forum: Turntables
  4. H

    HK730 Blows all four fuses

    Hi I dropped my HK730 while trying to clean it and it landed on the corner where the on/off button is, since then it blows all four fuses as soon as I turn either of the speakers A/B on. The reciver starts up fine and lights up but as soon as i turn either of the speaker outlets on it blows all...
    • hakno
    • Thread
    • harman kardon 730 hk730
    • Replies: 2
    • Forum: Solid State
  5. czgeddes

    Dim Bulb Tester gets brighter as volume is increased.

    I’ve just begun a restoration of a HK 730 Twin and have enjoyed listening to the radio with it for the last few months. I put it on the DBT and as I turned up the volume the light got brighter! Is this normal?
  6. Beauts

    Cleaning A Harman Kardon 730 Case

    Helo everyone! Stoked to be a part of AK! Shot in the dark, anyone have any solid tips on what to use to clean the case of an HK 730? If it's even possible? It's a different kind of textured material, one I've never encountered, and I can see some light scuffs and such. Any insight be be...
  7. A Sound Mind

    HK 730 FM Stereo Alignment

    I fully recapped this receiver (electrolytics), plus cleaned and inspected every inch of it. The power output transistors have new sil-pads and thermal compound. I replaced all the incandescent lamps. The idle current and bias adjustments were set to factory specs. It sounds great now, but a...
    • A Sound Mind
    • Thread
    • harman kardon 730 hk 730 stereo alignment stereo indicator lamp
    • Replies: 57
    • Forum: Solid State
  8. JB8

    Harman Kardon 730! Sweet! But, one troublesome channel...

    Just picked up my first 730, stoked! I've had loads of 330c's and 430's, even picked up a 330B the other day, but wow, I was so excited to get this 730 even though its condition was the dreaded "untested". I'll cut to the chase here. The left channel is blowing it's fuses. When I first plugged...
    • JB8
    • Thread
    • blowing fuses harman kardon 730 receiever
    • Replies: 21
    • Forum: Solid State
  9. LocalGiraffe

    Harman Kardon 430 vs. 75+?

    Hello, Am currently in the market for a HK-430 or a 75+ but was wondering on the differences between the two other than the 75+ having a quad setup. Couldn't find much info regarding it. If anyone has experience with the two (and perhaps the HK-730 as well) I'd love to hear from you.
    • LocalGiraffe
    • Thread
    • harman kardon harman kardon 430 harman kardon 730 harman kardon 75+
    • Replies: 1
    • Forum: Solid State
  10. 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
  11. leorleorleor

    Hello from the mountains!

    Hey everybody! I’m new to AK and wanted to introduce myself and show my setup. I am running a Harman Kardon Twin 730 with Pro-Ject Carbon Debut (acrylic plate), Bose 301 series IV speakers on tulip stands. I know that’s not the “right” combo but I love the look. In time I will upgrade the needle...
    • leorleorleor
    • Thread
    • bose 301 series iv colored vinyl harman kardon 730 project carbon debut tulip stands
    • Replies: 23
    • Forum: Introductions
  12. newriverrat

    A review of FX Audio 6j1 tube preamp, not?

    I recently ordered the item in the title and was sent a Suca Audio Tube T-1. Same thing? I dunno. Hooked it up between the PC/streaming and the Harman Kardon 730 through Klipsch RF 3s. This set up is warm with leanings to bright and room acoustics are reflective. Personal choice, not some...
  13. Gustercc

    Harman Kardon 730 phono output

    So, I recently purchased a 730. Replaced all the lights. It sounds great and I'm really happy with it. it has been recapped by a local tech shop here in town (austin) approximately 5 years ago. When I called to see if they have record of the work, they said they really don't keep records for...
  14. dlucy

    Recapping and repairing a Harman Kardon 730 twin power series stereo receiver

    @sfox52 asked me to recap his hk 730 twin series and since finishing that last week, someone else is asking for the recap BOM, so I'm posting that part quickly here and I'll fill in the details and the input-panel-repair and ps-for-LED-pointer-replacement goodies when I have more time. Index to...
    • dlucy
    • Thread
    • bom harman kardon 730 hk730 recap recapping
    • Replies: 349
    • Forum: Solid State
  15. JMiP

    Harman Kardon 730 Updates/Upgrades

    I just recently purchased a long sought after Harman Kardon 730 and ran across this thread by @dyche01 regarding the upgrading of the phono stage. The thread focuses on upgrading some caps and a few resistors, but I'm not clear on the value of the resistors he used. For instance, the schematic...
    • JMiP
    • Thread
    • harman kardon harman kardon 730
    • Replies: 8
    • Forum: Solid State
  16. O

    HK 730, hiss on left channel

    Hello! My Harman Kardon 730, had been fully recapped about a year ago. Last week I've noticed that there is faint hiss on the left channel. The hiss is quite stable with slight popping and random cracklings. It is not influenced by the volume knob, balance knob or any other knob on the panel. It...
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