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relays

  1. R

    KA-88 debug question (and a KT-88 one too)

    Hi all, Long time lurker but admittedly, not many posts. Sorry for the long post but the testing and analysis should make it easier to answer my questions. Quite a while back, I picked up a nice Kenwood KA-88 integrated amp (100 w/chan of Class A power). I didn’t need it but it was a nice...
  2. Cergei

    Yamaha M-4 | Relays not connecting after recapping

    Hello everyone, I completed the replacement of all electrolytics on my unit purchased in 1980, and noticed that once I power up the relays are not connecting. I measured on Left channel the voltage, instead of getting +65, I got 28.5V, while on the Right channel I got 44.4V instead of 65V. I...
    • Cergei
    • Thread
    • protection circuit reccaping relays yamaha m-4
    • Replies: 32
    • Forum: Yamaha
  3. D

    Help determining relay function

    Here is an excerpt from the HFE SU-8080 service manual showing a protection relay HC2A-P-DC24V (bottom left) I mis-identified this as DPDT (2 Form C) instead of DPST-NO (2 Form A normally open) - the 8 pins in total threw me. I couldn't find any data on the original relay, which would have...
  4. LouR

    JVC A-X2 no sound

    Hello AK-members, I just purchased a JVC A-X2 for 20 euro. Thought I give it a shot as I am looking for an amp with more power than my current one. Hooked it up to my speaker and the disappointment came: no sound. Well, just extremely soft. What I found out: - The relays click after some...
    • LouR
    • Thread
    • fuse jvc relais relays
    • Replies: 14
    • Forum: Solid State
  5. tngeorge

    Pioneer sx3900 speaker relays where to get?

    hi, relatively new here. I’ve read that others have experienced the same symptom as I am experiencing. My 3900 will cutout momentarily in the left channel for maybe 5-10 seconds, or it gets a bit staticky. It is within the unit as I have experienced it in phono, tuner, A and/or B, switched...
    • tngeorge
    • Thread
    • pioneer relays speaker protection sx3900
    • Replies: 4
    • Forum: Solid State
  6. smurfer77

    Sansui relay subs

    The idea of this thread is to pull together a quick and easy reference for finding modern replacements for old relays in Sansui devices. I will pull together what info I have, but please everyone contribute what you know and I will continuously edit this first post to combine all of the data...
  7. C

    Strange Audio Problem - MA-6300

    I'm a noob re DIY on my system, so forgive any errors in my assessment below. My 2 channel system is a McIntosh MA6300 running 2 Focal Chorus 720 loudspeakers. I listen to CD's, (Rotel) Vinyl (Linn)and stream music from the web via an Audio Engine Sender/Receiver. About 2 years ago I started...
  8. Allvey

    Help finding alternative to DEC ML1 24vdc relay

    Hi guys, I’m looking to replace an old DEC ML1 24vdc relay. Can someone recommend a compatible model easily available from Omron or from other manufacturers? I’m attaching pictures of the relay, PCB and schematics. By the way this relay is used in a Sony TA-N7 amp. Thanks
  9. G

    Bizarre 4400 melted relays

    Dear colleagues, nice to meet all of you. Prior to writing this post, I searched all the internet - including Audiokarma - but with no success. I bought an untouched Marantz 4400 made in 1976 with wooden cabinet and with a few common issues. I managed to fix all of them and all channels are...
  10. S

    In search of audio mute relay (Crown)

    My Crown SL-1 preamp has an apparent issue with the audio mute relay. Any suggestions for finding a replacement? I have no idea if this was made specifically for this unit or if it was mfctd for other units or companies. I do know that Crown no longer supports the vintage stuff from the 70s...
    • Stalmer
    • Thread
    • crown pre-amp preamplifier relays sl-1 straight line one
    • Replies: 7
    • Forum: Solid State
  11. Teti

    Nixie tube clock 1950's cold war replica

    So I've decided to make nice big beefy 1950's replica of Nixie clock inspired by old HP gear. I will use XO for start and later 10Mhz OCXO. First designing relays for that authentic clicking sound of old gear, 45 relays all together 1 relay for each digit. relays connecting tube cathodes to the...
    • Teti
    • Thread
    • clock cold war digita diy electronic nixie relays tube
    • Replies: 106
    • Forum: DIY
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