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repair

  1. K

    Sony STR-7065--PCB char-is it a make or break issue?

    All, New here and newbie to repair. Stick with description please! I picked up an 7065. Did some cleaning and inspection. Several caps seem new? Speaker B and C channels right, sometimes left were not working. Speaker A seemed to be OK. I noticed up near speaker inputs on supply board there...
  2. V

    SX-636 no longer working properly after using DBT

    To preface this, I am new to audio repair and definitely did not think I was going to be getting into a full repair with this receiver. I'm handy with a soldering iron and have a multimeter, but I don't have a huge amount of experience or knowledge with electronics. I'm excited to learn, but...
  3. goldswimmerb

    Marantz PM300 bias won't adjust down

    Hey guys, I'm working on a Marantz PM300 (not the greatest work by Marantz but honestly not too bad either) The dim bulb lights up bright, however both channels do produce output, testing I noticed that my bias for one channel was at 310mv at the lowest adjust point on the trimmer, and can only...
  4. A

    Marantz 1030 repair - left channel noise

    Hi all, I´m new here. My Marantz 1030 has a loud hum/noise in the left channel, right is ok. The noise is there with volume at 0, I´ve made a little video to demonstrate: I´ve built a couple of effects pedals, so I know a little about reading schematics and I can solder, but this is completely...
    • artrr
    • Thread
    • 1030 hum left channel marantz repair
    • Replies: 8
    • Forum: DIY
  5. Taavip

    Kenwood KA-5500 left channel repair

    Hello from Estonia! Hope you are all well. Got my hands on this really sweet '77 year Kenwood amp. Unfortunately left channel is dead. I really like this amp, so I would like to repair and restore it. Hopefully you can give some little guidance needed to bring this amp back to life. Before I...
  6. R

    Repair Denon PMA-280

    I am trying to repair my Denon PMA-280. The fuse blew, and it keeps blowing after replacement. I measured the transistors attached to the heatsink (C3853 and A1489), and one of them shorted on all combinations of the legs. This is the C3853 at place TR319 (schematic), for speaker channel B. I...
    • Rinkert
    • Thread
    • amplifer denon repair transistor
    • Replies: 4
    • Forum: DIY
  7. goldswimmerb

    Sx-990 rebuild + Questions

    Hey guys, so I am currently working on restoring a "barn find" SX-990 and had a few questions. I've gone and rebuilt the amplifier stage as it originally had a blown output, but noticed a few things and wanted to see if anyone with experience could weigh in. I replaced the driver Transistors...
  8. Sergimm

    Marantz 1050 assessment

    Hi, I am determined to repair a Marantz 1050 amplifier that was going to be thrown away. I have some knowledge of electronics, basic soldering skills, and basic tools (alas, no oscilloscope, but a good multimeter). I've been lurking in these forums and reading about amp recapping, and I have...
  9. B

    Replacing fixed RCA cables

    I have had a Technics SL-2000 for about 15 years. I picked it up for free because the previous user busted the RCA cables. The first thing I did upon picking it up was to remove the bottom of the turntable and use some electrical tape and some twisting to attach the new RCA cable to the fixed...
    • bphh
    • Thread
    • rca repair sl 2000 technics turntable
    • Replies: 2
    • Forum: DIY
  10. PioneerPoet

    BIC Venturi v820 - help needed

    I have a pair of BIC Venturi v820. I bought them on FB marketplace for mighty cheap a while ago, but I wasn’t able to hear them when I bought them. When I hook them, the tweeters play, but there is no base coming out of them. The subs are not moving at all. I took the hookup panel off and the...
    • PioneerPoet
    • Thread
    • base bic help problem repair speakers venturi
    • Replies: 1
    • Forum: Speakers
  11. S

    repair advise wanted

    I have a Sansui G9000 and 9090DB both inoperable at the moment and I would like to have them repaired. I am located in Michigan on the west side of the state near Holland. If anyone knows of a repair shop that can be trusted please advise. I am not adverse to shipping these but would prefer...
  12. M

    Technics SL-7 Latch Repair and Refurbish

    I just bought my first record player, a Technics SL-7 with some problems on ebay with the intent to fix it up and use it. It has the infamous cracked latch and is missing the 45 adapter for some odd reason. It's a really impressive machine, I'm surprised how much of it is metal. I'll be...
    • Myscion
    • Thread
    • latch repair sl-7 technics
    • Replies: 27
    • Forum: Turntables
  13. NickDeO

    SX-680 Restoration Troubles

    Hello, AK! Recently, I picked up a Pioneer SX-680 for $30. The guy I bought it from claimed that no sound came out due to a cracked PCB. Nice guy he was, he was even willing to open the thing up in his kitchen to show me where it was. I've since glued the cracked board and repaired the...
    • NickDeO
    • Thread
    • buzzing hum humming pioneer repair short shorted sx-680 troubleshooting
    • Replies: 80
    • Forum: Pioneer Audio
  14. teddyfreddy

    New to Audiokarma, looking for advice on repairing my Sansui 9090db

    Hi, I picked up a Sansui 9090db for really cheap. A lady bought a house with everything left in it, so she wanted to sell everything. So I ended up buying this beast.It powers up and the circuit protector light turns green. It does produce audio, but it is heavily distorted. So far all I've done...
  15. B

    Yamaha P-320 Repair Questions

    So I have been using this Yamaha P-320 turntable for a few years now, It was originally my dad's and has a lot of sentimental value which is why I am not looking to just buy a new one, and am hoping to fix the issue I am having, It seems that this turntable will no longer play once I press the...
    • BMARX123
    • Thread
    • p320 repair repair help turntable turntable repair yamaha
    • Replies: 15
    • Forum: Turntables
  16. BionicKoala

    My Mixer only outputs through RECORD not MASTER. Big Issue?

    I'm very new to audio equipment beyond my 80s Hi-fi, but am trying to build a more modern set up have purchased a Numark M4 Mixer on ebay. Problem is I have found that the MASTER phono outputs on the rear are not working properly. ie they buzz and hum unless you apply pressure to the phono...
    • BionicKoala
    • Thread
    • am broken fix newbie numark m4 phono output repair
    • Replies: 10
    • Forum: DIY
  17. R

    Vintage Pioneer Power cord help

    I was gifted a mid 70's Pioneer LP-777AP The only problem is that there is no power cord. I stole a power cord from a cheap Audio Technica turntable, in hopes I could use that. the only issue is that I do not know where to weld the new cord to. The manual says nothing about the circuit board and...
    • Raleigh J
    • Thread
    • diy powercord repair turntable
    • Replies: 6
    • Forum: DIY
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