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troubleshooting

  1. C

    FM - Front End Troubleshooting Tips?

    Hello AKers. Have a Marantz 2245 where the front end of FM seems to be struggling - but I can't seem to narrow down a particular source. Stereo FM isn't functional - stereo lamp is good - works in other modes except for AM. The tuner meter doesn't seem to particularly move as I run through the...
    • CaseyWKC
    • Thread
    • 2245 front end if repair marantz stereo fm troubleshooting
    • Replies: 19
    • Forum: Marantz Audio
  2. H

    GC047 changer (in 13GF826 cabinet) — stop mechanism won't retain, idler stays engaged

    Hey all! I'm working on a Philips GC047 autochanger mechanism (housed in a 13GF826 cabinet). Motor, idler engagement, tonearm lift, and cam drive are all now working correctly after a full clean and rebuild. Two faults remain. Using the 22GC043 service manual as reference (same core mechanism...
  3. J

    Marantz Model 140 – Single Filter Capacitor Revision? Both Channels Failed Simultaneously

    Hi everyone, I'm hoping someone here has run across this before because I'm starting to think my Model 140 is a production revision that doesn't match the commonly available service manual. I've been troubleshooting it methodically and trying to avoid replacing parts without evidence, but...
    • jammosherJAM
    • Thread
    • 140 marantz model 140 power amplifier service manual troubleshooting vintage audio
    • Replies: 36
    • Forum: Marantz Audio
  4. phatterplatter

    Luxman R-115 and R-117 Remote Select and Front panel select BOONDOGGLE

    Hi gang, I got an R-117 in for service some weeks back . The main issue was one pwr amp blown to smithereens ( all transistors shorted) BUT the other issue that came up was that the Remote wouldnt command Source selection and neither would front panel buttons ( FM and AM for some reason are...
  5. getthedog!

    Troubleshooting a Kenwood RA-56 reverb amp

    I've just bought a faulty RA-56. I gave it 14v DC and the center lamp lit up. Seems like a good start but can't get any action out of any of the other lamps. Not sure if I need to supply more voltage, louder music, or something else Some questions below What internal voltage does it run at...
  6. mobilestudio

    Help With Mac 1700

    I just got a Mac 1700 and am having some issues. It worked fine when I purchased it, but now that it's with me I'm having trouble getting it to output anything. The tuner isn't picking up anything at all (even static) and each input seems to be playing anything but the input that its being...
    • mobilestudio
    • Thread
    • 1700 input mcintosh troubleshooting
    • Replies: 26
    • Forum: DIY
  7. 5

    Narrowing down Sansui 9090DB issue -no sound -with other stereo components

    Hi, I viewed this helpful youtube video: , and wanted to do some of this at home before taking the Sansui 909DB to a tech, assuming I find one willing and seemingly able. It powers to green light; dials in AM/FM stations; selector lights turn on; no sound when I hook up speakers. I have an old...
  8. _charizard

    Crackling noise when playing audio

    Recently i've noticed that sometimes when sound is playing over the headphones (MM-100), there is some crackling noise, not the planar crackle, like bad signal crackling but very faintly. It's not unusable but it is distracting and irritating, most importantly it happens intermittently. I'm...
  9. _charizard

    Crackling noise when playing audio

    Recently i've noticed that sometimes when sound is playing over the headphones (MM-100), there is some crackling noise, not the planar crackle, like bad signal crackling but very faintly. It's not unusable but it is distracting and irritating, most importantly it happens intermittently. I'm...
  10. S

    Sony CDP-C315 Rehab - May not be worth it, but let's discuss.

    I was given a stack of 1980s-2000s audio and video equipment by a local audiophile who tends to acquire things from folks who are trying to clean out their homes. One of the items is a Sony CD-C315. It's a carousel CD changer, which is the type of changer I prefer over cartridge style, but it...
  11. D

    Sansui G-9000 - Yet another 'Protector won't come off' thread

    2nd owner, had it for the last 20 years; previous owner also nursed it (friend's dad, so I've known this unit my whole life. In fact this unit knows probably more about me than myself) Over the last 3 years it - started to go on Protector while using - then simply wouldn't come off Protector...
  12. J

    Kenwood KR-9600 Left Channel Not Working

    Hey everyone new member here, I just discovered this forum while trying to find some information to fix a friends Kenwood KR-9600 and after some troubleshooting figured i'd make an account and give the forum a shot. So this receiver had been sitting for quite awhile because of a popping noise...
  13. G

    Technics Direct Drive troublehooting - shaky stability/faint knocking sound(audio clip)

    Hi everyone! Long time lurker, looking for help from anyone who has repaired Technics DDs and might have come across these symptoms: I have a Technics SL-01 , its an early rare 70s Japan-market DD quartz lock table , a bit similar to the SL-1500 MkII and SP-20 internally I'm told. I got one...
  14. stgtr

    Technics SH-8010 Troubleshooting

    Was gifted a Technics SH-8010 EQ by a coworker. Plugged it in on the bench and had power, and the switches on the front seem to work fine, everything lit up like it should. Tested on the bench from my PC with a 3.5mm to RCA into a pioneer Sx-780 I've been working on and had a good output, but...
    • stgtr
    • Thread
    • diy equalizer sh-8010 technics testing troubleshooting
    • Replies: 1
    • Forum: DIY
  15. P

    Marantz 2230B with NAD CD Player Doesn't Sound right

    Hey there, Recently bought a NAD C538 CD player and hooked up to my Marantz 2230B that I've been using for last 10 years. Tried the Aux and both Tape Inputs. All of them sounded fine until the bass kicked in and is distorted and blown out on majority of CDs (it's not a speaker issue either...
    • Pig's Vinyl
    • Thread
    • 2230b blown impedance marantz modern nad out troubleshooting vintage
    • Replies: 3
    • Forum: Marantz Audio
  16. BetaMaster64

    Webster Chicago Model 80-1 Not Erasing (and Recording Distortion)

    Hello all! TL;DR at the bottom if this. This isn't exactly a "tape" question, but it's related enough, I think. Please bear with me, as I'm pretty new to in-depth troubleshooting; most of my previous restorations have just been blind capacitor replacement, and then hoping everything gets fixed...
    • BetaMaster64
    • Thread
    • oscillator record head troubleshooting webster chicago wire recorder
    • Replies: 8
    • Forum: Tape
  17. _charizard

    Right channel stops working when volume is low

    Amp in question is Adcom GCA 510. Already happend when i bought it then i took it for cleaning and after a year it started happening again. So it works perfectly fine when volume is decently high (above 10-15% on amp and 100% in windows) and when i want to listen slightly quieter sometimes right...
    • _charizard
    • Thread
    • troubleshooting troubleshooting amplifier
    • Replies: 10
    • Forum: Solid State
  18. A

    Marantz 2015 disable tuner to troubleshoot?

    Hey guys! I have a little Marantz 2015, which smells like burnt electronics when I run it - I recently recapped the preamp because of a failed cap, and it plays beautifully (from aux) and has very little noise. The phono amp seems fine too, which leads me to suspect the tuner, which doesn´t...
    • artrr
    • Thread
    • marantz 2015 smell troubleshooting tuner
    • Replies: 1
    • Forum: DIY
  19. L

    Sta2100d right channel troubleshooting help

    Been working on a right channel power amplifier! Realistic Sta2100d receiver! Changed all 4 TO-3 transistors! Also the 2sd400! Recapped it, still seems to have short! Replaced the burnt resistors, and checked the other ones! Changed some diodes! I have a working left channel and have tried to...
  20. I

    Luxman PD-264: Anti-Skating Not Working – AS Dial Moves Rod, No Effect

    Hi all, I’m dealing with an anti-skating issue on my Luxman PD-264. No matter how I adjust the dial (I’ve turned it fully each way), the tonearm consistently pulls toward the center. I see that the anti-skating dial pivots a thin rod underneath. The rod stretches from its pivot point into the...
    • Iterr
    • Thread
    • anti skate repair anti-skate anti-skating luxman luxman pd262 luxman pd264 pd-264 pd262 repair advice troubleshooting
    • Replies: 3
    • Forum: Turntables
  21. SX828POWER

    Kenwood KA 8004 Restored - But Sounds AWFUL! (with pics)

    Good evening Ak'ers, I have been doing quite a bunch of reading on this machine and I have finally decided its worth reaching out for some help with the issue I am having. I picked up an absolutely perfect condition Kenwood KA-8004 integrated amplifier last year for little more than the cost of...
  22. miversen

    Speaker Crackle

    New to the site and vintage audio. This probably has been asked and answered. I was given my dad's old Sony STR-6046A receiver and two Venturi formula 4 speakers. I am getting random speaker crackle. At first I tried the radio and was getting some speaker crackle. I wasn't sure if it was just a...
    • miversen
    • Thread
    • bic venturi formula 4 crackles sony str6045 speakers troubleshooting
    • Replies: 20
    • Forum: Speakers
  23. D

    Nakamichi AV-500 Receiver help

    Hi everyone! I am new here, looking for help with an issue my dad is having with his receiver. I'm not an expert so I hope you'll forgive any mistakes here! My dad has a Nakamichi AV-500 receiver, which he's had for around 25 years, and it's always worked great apart from some minor things...
    • dusacat
    • Thread
    • nakamichi nakamichi av-500 receiver troubleshooting
    • Replies: 0
    • Forum: Solid State
  24. G

    Harman Kardon 730 Twin Issue

    Hello, I recently bought a 730 twin, and it has this issue where when connected to speakers, it makes a sort of popping sound and then hum. No audio from either channel. I took it to a tech, and they said something about the bias being changed, and not being able to fix it, and ultimately they...
    • gloitz
    • Thread
    • harmankardon stereo troubleshooting
    • Replies: 3
    • Forum: Solid State
  25. N

    Yamaha NS-C444 troubleshooting

    Hi, I just bought a Yamaha NS-C444 off Marketplace for very little money because the previous owner said that the tweeter was blown. He said that dialogues when watching movies got quieter and quieter with time until he replaced the speaker. After taking it home and trying it, the tweeter is...
    • norwid
    • Thread
    • beginner troubleshooting yamaha speakers
    • Replies: 5
    • Forum: Speakers
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