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mcs

  1. B

    MCS 3125 Going into Protection at Half VU

    Good Evening fellow Audiophiles, I recently acquired an MCS 3125 to use as my daily. However anything above 40%- Half VU and the Amplifier goes immediately into protection, NOT CLIPPING. It does this on all speaker channels, including the headphone section Any ideas on what this could be?
    • b-17rocks
    • Thread
    • mcs modular component sytems receiver advice
    • Replies: 0
    • Forum: Solid State
  2. G

    Restoring MCS 3233: power supply hum won't go away

    I got this MCS 3233 from my dad several years ago and in the process of upgrading it (complete recap, replaced output transistors) we've discovered a hum coming from the power supply that we can't get to go away. Thanks to this forum (so many helpful posts!!) we've been able to address most...
  3. M

    Beloved MCS 3865 Amp Right channel started popping. Thoughts?

    I have been using a Modular Component Systems 3865 in my workshop. It has plenty of power to drive my Technics SB-G800 (97 db/watt) speakers. Have used it for 2 years until the right channel just started popping loudly every minute or less. Needle jumps (yes, one needle still works on the watt...
    • MarkHaslett
    • Thread
    • amplifier audio amplifier repair mcs mcs 3865 modular component system amplifier troubleshooting amplifier
    • Replies: 10
    • Forum: General Audio Discussion
  4. B

    Burning smell and hot amp...

    Well here I am again...after fixing my turntable I seem to have run into an issue with my amp. The unit is an MCS 2250, which is essentially a Technics SU-Z400. Everything sounds great, and played it for a good period of time after my turntable repair. But I now notice a burning smell coming...
    • BM0127
    • Thread
    • burning smell mcs mcs 2250 technics technics su-z400
    • Replies: 3
    • Forum: Solid State
  5. B

    Phono Hum, even when just RCA plugged in...

    I know, I know...another phono / turntable hum troubleshooting post. In this case, however, I am rather certain that my turntable is not the issue. I think it is the Phono "Equalizer" / Stage on my MCS 2250 amp -- which is essentially a Technics SU-Z400 (manual here). This hum only occurs on...
    • BM0127
    • Thread
    • integrated amp help mcs phono stage hum technics
    • Replies: 8
    • Forum: Solid State
  6. Racingh11

    Silver Marshall / Capetronic music system

    I am servicing this unit for a friend. It was covered in a layer of garage grime and the cover was very scuffed and dirty and was difficult to see through. It was hand polished and waxed and everything else cleaned and touched up. Aligned the tuner and controls and belts cleaned. Also replaced a...
  7. J

    MCS 3275 - Function Control not 'Functioning'

    Hi, new to the board here. I am away from home handling the clearing out of my father's estate. And I came across a couple vintage audio pieces that brought back such fond memories of when I was a teenager. They are an MCS 3275 receiver and an MCS 683-6601 direct-drive turntable. My Dad used to...
    • JethroD
    • Thread
    • function board mcs modular component systems
    • Replies: 2
    • Forum: Solid State
  8. TupeloJohn

    MCS 2330 phono input question

    Greetings, I purchased an MCS 3230 recently for my mother, she is 89 and love country music. I deoxit the pots and cleaned it up but the left channel on the phono stage is not completely audible. Tuner and tape inputs are fine on both left and right channels but the phono stage I only get right...
  9. Kenny kuhl

    MCS 6700 Turntable Problem

    Hey folks, My MCS 6700 33RPM not longer spins. 45RPM not a problem. It was getting wobbly and dragging. Today just stopped! Thoughts? :music:
  10. A

    Technics SL-D2 Dust Cover Compatibility

    Hi all -- Girlfriend's dad has a beloved SL-D2 with a dust cover that needs replacement. He's keen on a hinged cover instead of a set-on, so I've been trying to source a used and/or broken D2 to harvest the dust cover (and, hoping against hope, an interesting cartridge) for him as a surprise...
  11. Racingh11

    MCS / Capetronic pin translation wanted

    After discovering certain MCS models such as the 3233, 3235, 3245 are made by Capetronic. Which from what I understand, was an American company that had assembly done in Taiwan. I came across this pin when researching and I bought it. Is there anyone out there that can translate what is written...
  12. Z

    MCS 683-8228

    Earlier this week, I bought a pair of 8228s at a thrift store for 80 bucks, not knowing anything about them prior to this site. I was amazed to see the amount of "enthusiasm" on these speakers! The Cabinets are in decent shape, 8/10. The grills are attached, but could be fixed up. 8/10. The 12"...
    • Zeroedin
    • Thread
    • 683-8228 8228 advice driver foam rot help mcs mid midrange speaker
    • Replies: 5
    • Forum: Speakers
  13. Racingh11

    How to increase power (MCS 3235 to 3245)

    I recently modified an MCS 3245 receiver to greater power output using a 3275 transformer and other modifications. It can be read in this thread: https://audiokarma.org/forums/index.php?threads/how-to-increase-power-mcs-3245-to-3275.968122/ The second conversion I did in that thread left me...
    • Racingh11
    • Thread
    • 3235 3245 mcs modular component systems power receiver transformer upgrade
    • Replies: 34
    • Forum: Solid State
  14. Yitz

    MCS 683-3339R Receiver --decent or junk?

    I read thru a few threads on here about MCS in general, and how they've got a few gems and a few turkeys in the line up of their gear. I get the whole "rebranded for JCPenny" thing... but I've found one locally and I have no idea what it is. It's a 683-3339R probably AKA 3339R. It's a stereo...
  15. Racingh11

    How to increase power (MCS 3245 to 3275)

    I recently went to service an MCS 3245-10 I bought. (45 watt per channel) Upon initial dim-bulb turn on, it was idling fully lit. After disconnecting things, I found that the power transformer was shorted and pulling 110W by itself. None were available, so I bought a transformer for a 3275 (75...
    • Racingh11
    • Thread
    • 3245 3275 mcs modular component systems power upgrade
    • Replies: 68
    • Forum: Solid State
  16. razpones

    MCS 3223 FM one channel has very low sound

    Hello everyone, happy holidays This year I really embraced the electronics repair hobby. I particularly enjoy trying to repair audio equipment, receivers, cassette players and speakers so far. I've had relative success with some receiver and integrated amps that needed basic service of cleaning...
    • razpones
    • Thread
    • diy fm radio mcs repair
    • Replies: 4
    • Forum: DIY
  17. S

    AM not working after recapping power supply

    I recapped the power supply of my MCS 3223 and it was somewhat successful, I made the hum go and it's sounding a lot better now. However, I believe that in the process I might've moved or fried something that stopped the AM signal from working. What should I look for and where should I look if I...
    • sabalennon
    • Thread
    • am am radio mcs recap receiver restoration vintage
    • Replies: 4
    • Forum: Solid State
  18. S

    MCS 3223 - Right channel louder than left

    I recapped the power supply, changed the fuses and changed the bulbs of my MCS 3223. Now I realized that the right speakers sound a bit louder than the left ones. What could be causing this/how can I fix this? I also noticed that sometimes when I'm listening to records, the left channel...
    • sabalennon
    • Thread
    • bias dc offset louder louder than other speaker mcs receiver vintage
    • Replies: 0
    • Forum: Solid State
  19. S

    Failure-Recapping a MCS 3223

    Short story: I tried recapping my receiver's power supply, it worked at first but the left channel died after I moved it a little, i opened it and noticed that one of the capacitors had gotten loose, I tried to reconnect it and now it won't power on. Question: What could've caused this? Is...
  20. S

    How does this MCS 3223 look from the inside? Mind giving me some guidance?

    Note: The pics were taken before I cleaned it, it is much cleaner now. I apologize for not including "after" pictures. Short story: Recently got this receiver for free from a caritative soul, It has some flaws that are minor at least for me. But basically, I'm willing to experiment with this...
  21. Homey4uk

    help with my MCS 3245 no sound in left channel

    Hello friends and thanks in advance for your help. I purchased a used MCS 3245 and was told it was working inasmuch as they "could test it." Code for it doesn't work. Very weak, distorted sound out of the right channel (I already cleaned it with contact cleaner and compressed air and used Deoxit...
    • Homey4uk
    • Thread
    • diy help needed i like to solder as much as i like wearing masks mcs modular component systems no sound right channel speaker protection switch
    • Replies: 5
    • Forum: DIY
  22. Duncan L

    Hello World!

    Musician and music lover here, just joined the forum. I have some basic questions, most of which can probably be answered via links to other threads - I'm just learning the ropes of this message board. I love listening to vinyl but I'm concerned that I am not getting all I can out of my system...
    • Duncan L
    • Thread
    • advent advent large advent loudspeaker advent original large loudspeaker l-120a luxman luxman l-120a mcs mcs 6503
    • Replies: 27
    • Forum: General Audio Discussion
  23. JPNH

    Grabbed this MCS for $30 today. Rather impressive.

    So this this MCS 6601 popped up on my FB Marketplace feed today for $50. When I got there she said I was so friendly(don't ask me?) I could take it for $30. Fairly impressive TT for the money. Other than 1 missing foot, some dust/cracked dust cover, a stop/play knob that pops off the pot and...
    • JPNH
    • Thread
    • 6601 jc penny mcs mcs 6601 pickering
    • Replies: 17
    • Forum: Turntables
  24. N

    New Cartridge Big Hum no Music

    I have an Bang & Olufsen RX TT and it had an MC 5 cartridge. It played vinyl but volume was soft but could be heard through the speakers. Sent cartridge off to be retipped to a nude MC 3. Installed and all I get is a hum which increases with volume. The ground is tight and the RX phono cables...
  25. M

    MCS 3850 left channel

    Hello, I've got an MCS 3850 with a dead left channel. I've replaced the fuse, which was blown, and cleaned the pots, switches and jacks according to the idots guide. Still no left channel sound or illumination on the left channel meter. The left channel meter is capable of illumination, as I've...
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