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repair

  1. T

    technics se-9200 bias adjustment?

    I am currently working on a se-9200 power amp that really does not need that much work. I adjusted the dc offset on the speaker leads to 0.00 volts however I also wanted to adjust the bias but I couldn't really find anything about this in the service manual. I was expecting maybe a target...
  2. SalonMusique

    JBL L100 - need advice for rewiring

    Hey everyone, first post here! I am slowly discovering the audiophile world since 2 years. Taking my time to learn bits from here and there. I am very glad I found this forum so much ressources and enthusiasms! So, I found a nice pair of JBL L100 century (very late model) a week ago. Manage to...
  3. C

    Technics SL-1350 Manuals and Rebuild Guides?

    Looking for manuals to help with the rebuild of a Technics SL-1350. If someone with a vinylengine account could download the manuals and schematics then send me a private message, dropbox link, google share, or other I'd greatly appreciate it. My hifiengine account doesn't work and vinylengine...
    • Crumbs
    • Thread
    • manuals repair schematics technics sl-1350 turntable
    • Replies: 5
    • Forum: Turntables
  4. T

    Nad pe 7175 receiver suddenly not working properly?

    I was calibrating this receiver but when doing the dc voltage adjustment for the speaker terminals the protection suddenly kicked in. After happened I turned off the amplifier cleaned the potentiometers for the dc offset. Measured the value of the one I hadn't touched yey, matched them and...
  5. U

    Marantz 2015 main fuse blowing

    Hi all! Long time lurker, first time poster here. I recently got a pretty worn Marantz 2015 (with wood case) for 50$. Main fuse (on the back) keeps blowing on power-up. I found that the output transistors were blown, so went ahead and replaced those to no avail. Still getting blown fuses. Any...
    • UsedChaps
    • Thread
    • baby marantz fuse marantz marantz 2015 repair restoration
    • Replies: 14
    • Forum: Marantz Audio
  6. hurdy_gurdyman

    Repairman needed

    Need help recommending a repairman to replace electrolytic caps on a vintage Pioneer SA7800 integrated amplifier. Any recommendations? BTW, I'm in Michigan. Dave
  7. D

    Sansui S-X900 noticeable white noise on left channel

    Hello all, I've been noticing a white noise coming from the left side on this receiver. I was wondering if anyone had experienced this sort of thing and if you did fixed it would you say it was capacitors, resistors, transistors or something else? I have opened it yesterday to have a look in...
  8. jFF_Bulbo

    Marantz 6350q hello.

    Hello AK'ers Hope all of You have had a great new year. For me a very special gift by myself, a 6350q un good shape, but not working. Well, the motor is stuck, can't be turn the shaft even by hand, according previous owner, the TT was misstreated by carrier (Fedex) and it has a hit in the...
  9. T

    Sansui au-117 only at the correct volume for a second after turning on?

    I found an old sansui transistor amp and it has a weird issue. It seems to be working but only after turning on or off. It gets to the correct volume for a second before going to a very low volume, however the signal isn't distorted. If I keep switching the amp on and off quickly it keeps...
  10. Yemm66

    Thorens TD 145 mk1

    Hello and good morning! I have a Thorens TD 145 mk1 that I cannot get the platter to “bite” on startup. It spins fine, but I have to push the platter to get it going, otherwise it slips on the motor spindle. Once going it spins at 33.3. I have a brand new Thorens belt too. Spindle and platter...
    • Yemm66
    • Thread
    • 145 mk1 belt capacitor repair restore td thorens vintage
    • Replies: 12
    • Forum: Turntables
  11. B

    Technics SL-P999 remote control problem

    I recently acquired a Technics SL-P999, without a remote, which appears to work perfectly. I was hoping to control it with my Logitech Harmony remote, but after configuring that, the player does not respond to it. I've also tried a Technics remote (EUR643900) from a more recent player, and...
  12. W

    Harman Kardon HK640 broken left channel

    Hello, Quite a while ago I asked my dad for his old HK640 that we used to have at home. I remembered it having some problems and was interested in fixing it up and using it. I have made some progress, but am currently somewhat stuck. I've been working on it off and on for quite a while, so I...
  13. T

    teac c-3 / tascam 122 help needed!

    I have a teac c-3 cassette deck that doesn't seem to be responding to any of the mechanism control buttons. I think it might have to do with it not recognizing that a cassette is inserted but the problem is I am not entirely sure how it detects this in the first place. Can anyone who has a...
    • TrevorBarten
    • Thread
    • 122 c-3 help repair tascam teac video
    • Replies: 9
    • Forum: Tape
  14. T

    pioneer ct-f4040 only plays on one channel?

    I bought this pioneer cassette deck recently and today I spent basically 4 hours having to rebuild the entire mechanism. Now I have it mostly working except for rewind which works but is kinda slow. Regardless it suddenly decided that it only wanted to output to the right channel even though it...
    • TrevorBarten
    • Thread
    • broken cassette deck channel cleaning ct-f4040 help pioneer repair
    • Replies: 0
    • Forum: Tape
  15. T

    nad c326bee integrated amplifier with defective pre amp circuit help?

    According to the previous owner it was working but suddenly they could hear pops from time to time via the speakers until one day there was a very loud pop and it stopped functioning properly. I tested it and it seems like the problem is limited to the pre amp as the power amp is working fine if...
  16. N

    Understanding Speaker fuses and circuit breaker - Technics SB-X30

    I recently bought a pair of Technics SB-X30 and am having some issues getting them to work properly. The issues I am having mostly have to do with a these so-called "Speaker Protector reset buttons" on the backplate of the speakers. IMG_20221208_230213 by NickHam1122 posted Dec 9, 2022 at 9:48...
    • NickHam1122
    • Thread
    • diy electrical short fuse repair technic repair technics
    • Replies: 3
    • Forum: DIY
  17. T

    Yamaha p520 direct drive turntable not spinning.

    I am working on a yamaha p520 and it doesn't spin at all. Any clue what it could be ? I tried to measure the output of power transformer but I couldn't get any voltage reading. One other thing I noticed is that the strobe light doesn't turn off if the arm is in the off position but it does start...
  18. K

    Pioneer PL-4 Repair

    Hi all, this is my first thread on AK. I look forward to becoming a part of this community. Let's get down to business. I just purchased a non-functioning PL-4 on eBay for about $50. This is the first TT I'll be attempting to repair...in fact this is my first TT ever. Something about repairing a...
    • KJilli
    • Thread
    • beginner pioneer pioneer pl-4 repair
    • Replies: 1
    • Forum: Turntables
  19. A

    Acoustic Research AR3 Restoration- Roadblock!

    Hello All! This will be my first post on the forum, but I've been reading threads for months. A couple weeks ago I stumbled upon a set of AR3's at an estate sale, and bought them (of course). While cleaning the potentiometers yesterday I encountered quite the problem. The tab that contacts the...
  20. M

    Pioneer sx 780 issues, sometimes hcannels dropping and protection clicking in

    hello folks, iv tried on my own to see what may be wrong, and can't figure it out im a bit of a novice but have access to soldering tools a 50 Mhz oscilloscope, and a multimeter. I have a pioneer sx 780 that I have given a recap to see if it will fix the issues, no real luck, iv replaced all...
  21. J

    Seeking advice for repair of separated subwoofer Magnet

    I have no idea what I'm really looking at. I figured it might be easier to fix to a educated eye. I dropped the unit like two feet and the magnet was detached from cone. I'm a woodworker and some part of me wants to sand down on the magnet to remove residue and stick epoxy on it but I know...
    • Jacobclem
    • Thread
    • repair
    • Replies: 14
    • Forum: DIY
  22. mrz80

    After some years, back to trying to fix the MAC-4100 again

    Well hello again everyone. Almost five years ago (to judge from the date on the last post) I set my dead MAC-4100 aside in frustration and put the MX-112 and MC-275 into the main system (after determining that the 275's only problem was a tube that had cracked glass letting go). Here's the...
  23. stevef22

    Hello from San Antonio Texas! Any local repair techs?

    Just wanted to say hello! Great to be here. Looking to meet an old school repair tech and maybe learn something along the way. I have some vintage gear that needs a little work. I collect older Yamaha, Marantz, Sansui etc stuff. Just picked up my largest purchase to date... KLH Model 5...
  24. Tala Mink

    Accuphase E-202 blown power supply

    I started working on an Accuphase e-202 for a friend, they weren't sure what was wrong with it as it had been sitting for almost a year since it stopped working. I was going to power it up on a dim bulb to see what was wrong with it, but opened up the amp first to see if anything was visibly...
    • Tala Mink
    • Thread
    • accuphase accuphase e-202 help repair trouble shooting
    • Replies: 21
    • Forum: Solid State
  25. DaniMattas

    Sony PS-LX700P turntable adaptation

    Hi everyone! I recently found this turntable at a very good price at a garage sale, unfortunately it has a cable that is only compatible with very few amplifiers, I know very little about electronics, so I need to know if someone can tell me how I could adapt it for that this turntable can be...
    • DaniMattas
    • Thread
    • adaptation automatic ps-lx700p repair sony turntable
    • Replies: 1
    • Forum: Turntables
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