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harman kardon 330c

  1. JB8

    HARMAN KARDON 330C - Bacon Frying Popcorn Static On Cold Start

    After a long hiatus from working on receivers (many of which were fixed due to Audiokarma help, thank you) I picked up another 330C. The power supply board had been removed, it was missing the main filter caps and one cap on the main amp board (C407). Whoever worked on this guy last replaced a...
    • JB8
    • Thread
    • harman kardon 330c static in left channel transistor problems
    • Replies: 13
    • Forum: Solid State
  2. N

    FM problem on Harman Kardon 330c after a bulb change

    Hi everyone, I’m completely stuck after replacing the red light on the 330c and the main lights (I didn’t convert them to LED). Since reassembly, I no longer have FM reception. Given how hard it was to reach the red light, I ended up fiddling with the FM tuning cord, and I even had to re-tighten...
  3. D

    Help tracking down 60hz Phono Hum HK 330C

    I've been working on restoring a Harman Kardon 330C. I finished recapping the power supply, tone control, amp, and eq/phono board as well as replacing the 2SC1344 and 2SC1345 transistors on those boards with KSC1845's. Was getting ready to put it back together and noticed a faint hum in the...
    • dups68
    • Thread
    • 60hz hum harman kardon 330c help needed phono buzz
    • Replies: 16
    • Forum: Solid State
  4. JB8

    HARMAN KARDON 330C - No Stereo Light or Sound?

    HK Experts! Very nice looking unit here, sounds excellent, very clean, quiet, FM alignment is fantastic but I'm only getting mono from the FM section - no light or stereo separation even with strong signal and antenna attached. Here's what I've done thus far: Controls cleaned and exercised...
    • JB8
    • Thread
    • 330c fm stereo harman kardon 330c no stereo stereo light
    • Replies: 10
    • Forum: Solid State
  5. davstev

    Harman/Kardon 330C - speaker terminal replacement?

    Hi all, I picked up a H/K 330c, in decent shape, with just a few issues. One of the issues is that a whole row of speaker terminals is wrecked and needs replacing. This must be a common problem, they are pretty flimsy. I have disconnected them and taken the broken mount panel out too. There's...
    • davstev
    • Thread
    • 330c h/k harman kardon harman kardon 330c hk 330c speaker terminals
    • Replies: 9
    • Forum: Solid State
  6. Zyork4823

    Harman Kardon HK 330C

    Finished my second refurbish on an HK 330c, did a HK 730 for my first go around and I must say this one was much easier due to all the boards being easily accessible. I love the sound of these HK’s! Ran into an issue on this one with the FM barely coming in and determined the MPX integrated...
  7. CalvinBeck

    Harman Kardon 330C power board Q601 pnp

    Long time lurker, first time poster. First let me say I am continually impressed by the helpfulness and free exchange of knowledge I have seen on Audiokarma. I've only been working on electronics as a hobby for three years. I went through that "know enough to be dangerous" phase, moved on to...
    • CalvinBeck
    • Thread
    • harman kardon 330c negative rail q601 vce vee
    • Replies: 19
    • Forum: Solid State
  8. JB8

    Faceplate & Knob Cleaning & Polishing: How do you get it done?

    DISCLAIMER: There may already be an extensive thread (or many of them...) around this but I didn't see it, so thanks in advance for your contribution! Always good to have an updated version of best practices. For some context, I started working on project receivers at the beginning of the...
    • JB8
    • Thread
    • faceplate glass harman kardon 330c knobs polish realistic sta-78 yamaha yamaha cr-420 yamaha receiver
    • Replies: 15
    • Forum: Solid State
  9. jpreza

    Pioneer SX-750 vs. HK 330C

    There is a seller that has a Pioneer SX-750 receiver that looks very clean. He is willing to take trades. What is your opinion if I were to trade my dearly beloved HK 330C? Is that a fair trade? The HK 330C is very clean, has been recapped and noisy transistors replaced. TIA....Joe
  10. dlucy

    dlucy's guide to Harman Kardon minimalist series 230A, 330, 330A, 330B B-1, 330B B-2, and 330C

    The third era of solid state stereo receivers from Harman Kardon centered around the 330A and 330B and the clones made by Roland and Soundcraftman: This thread is a guide to those models, their specs, and pointers to schematics and restoration threads for each. If you have additional...
    • dlucy
    • Thread
    • 330a 330b 330c harman kardon harman kardon 330a harman kardon 330b harman kardon 330c hk
    • Replies: 50
    • Forum: Solid State
  11. tlann

    Kenwood KA-3500 vs. Harman Kardon 330c

    Hello! So this is probably a hard question to answer, and I know there's some subjectivity at play here. But my old Kenwood KA-3500 recently went out of commission (seems to be a blown channel), and it looks like it will be around $150 to repair, with at least month turnaround—which feels like a...
    • tlann
    • Thread
    • blown channel harman kardon harman kardon 330c kenwood kenwood ka 3500 replacement stereo amp stereo amplifier
    • Replies: 16
    • Forum: General Audio Discussion
  12. ramorel

    Harman/Kardon 330c - no sound (or very litte) from either channel

    I've had a 330c sitting around for a while and I finally decided to hook it up and give it a spin. Sounded great for a few weeks. I switched it out and then decided to put it back in. This time - no sound! From either channel! If I turn the volume up all the way, I would get a hint of sound out...
  13. T

    Having fun with some receivers

    Just thought I would share a couple of pictures of some receivers I am cleaning up. New lighting in the HK 330c and the KR-7600. The RS STA-100 and the SX-525 just a good cleaning. Have not started on the model eleven II yet. Lots of fun.
    • Texas Tom
    • Thread
    • harman kardon 330c kenwood pioneer sx-525 realistic
    • Replies: 3
    • Forum: Solid State
  14. A Sound Mind

    HK 330C - Dead FM

    Hi All, I get no FM output either in mono or stereo mode. I tracked the signal on the tuner board to the BA1310 multiplexer IC. Pins 4 and 5 should have an output signal, but do not. I tested all the transistors and diodes in this area and they're fine. I don't fully understand the FM...
  15. R

    One channel in stereo, two in mono - diagnosis?

    My Harman Kardon 330c is only delivering sound to one speaker channel when I press stereo. In mono, both channels get sound. I'm guessing it's a blown fuse, but even if that's true, swapping that fuse wouldn't seem to solve the underlying problem, which is...? Any guesses? Easy fix...
  16. H/K T30C

    Harman Kardon 330c repair issue:

    Thanks to BlueGlow Electronics' wonderful video on servicing the Harman/Kardon 330c receiver, my dad and I were confident enough to buy one that needed some work. Yesterday we started working on it and everything was going fine. We cleaned all the pieces, deoxidized all the pots, and managed to...
  17. P

    Harman Kardon 330C blowing fuses

    My 330C worked well and one day developed some distortion in the right channel. In a short time the channel stopped working and no sound in the right speaker. I took a look inside ad spotted a suspect cap, C405 on the main board which tested out of spec. I replaced the cap and still no sound on...
    • pcrosewood
    • Thread
    • blown fuses harman kardon 330c right channel not working
    • Replies: 125
    • Forum: Solid State
  18. JMiP

    How to connect an iPhone 6 to vintage receiver?

    I was hoping that connecting my iPhone 6 to my Harman Kardon 330c was as easy as using an RCA cable to connect the phone into the AUX in the back of the receiver. I hear the music, but I have to crank the volume on the iPhone 6 all the way up and have to crank the volume of the receiver way up...
  19. JMiP

    Harman Kardon 330c Power Amp Idling Adjustment

    I have attached a screenshot of the service manual for the HK 330c where it describes how to set the idling adjustment. I understand how to do the first four parts, but the last one, "Connect 8 ohm (50W) resistor across left and right speaker terminals," I don't know how to do. Can someone...
    • JMiP
    • Thread
    • harman kardon 330c idling current
    • Replies: 12
    • Forum: DIY
  20. redpackman

    Harman Kardon 330b Receiver - blowing main fuse Help!

    OK, I just picked up a very nice looking HK 330b receiver. Nice looking cosmetically, so there's some good hope here. BUT as soon as I turn it on the main fuse instantly blows (not the speaker fuses, but the main single 2.5A power fuse. I'm a shade-tree. For those of you who know this...
    • redpackman
    • Thread
    • harman kardon harman kardon 330c
    • Replies: 25
    • Forum: DIY
  21. JMiP

    Speakers getting blown

    I have a Harman Kardon 330c and a pair of Advent /3 speakers. The right speaker blew out just today after about an hour of playing music at a not loud volume level. By "blew out," I mean that there was a significant loss of volume from that one speaker and it sounded scratchy. A little history...
    • JMiP
    • Thread
    • avdent /3 blown speakers harman kardon 330c
    • Replies: 32
    • Forum: DIY
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