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7070

  1. tutor_turtle

    Abused Sansui 7070 / service manual short-comings

    I have a 7070 (non-db) imported from Portugal. The owner reset the transformer to "100V" instead of 120V. He ran it that way until it stopped working, He has sent it to me in hopes of resurrecting it. As one might imagine, it has multiple issues. To sort it all out, I could use the voltage...
  2. S

    First time Sansui receiver options

    I’ve been keeping an eye out for a Sansui receiver for about 6 months and not a lot come up in Australia. I have a Sansui ST-525 I’d like to hook up and haven’t decided on the speakers yet. Currently there’s a 5000a, 771 and 7070 on gumtree all for around the AU$600-700 mark. There is a lovely...
  3. Richard P

    Sansui 7070 Tuner Board (F-2614) Missing RFTransformer

    I'm bringing a clean 7070 back to life and am getting close to firing it up - just waiting on the new output transistors and some fuses to arrive - but I've run into a possible issue with the tuner board (F-2614). One of the FM discriminator transformers appears to be missing - T03. The...
  4. daveyh

    Sansui 7070 only plays in MONO in both speakers - HELP!

    I have tried to clean all the controls many times and it still only plays in MONO in both speakers. The amplifier section meters work on both sides and produce sound when in MONO mode. When the stereo button is pushed the stereo light comes on and it only plays on the left side and the right...
  5. DefJamHUN

    Sansui 7070

    Hello, There is a problem with my sansui 7070 amp sizzling. the error both affects my speakers. Also affects the treble / midrange / bass speakers. the error is also heard at the 0 volume. treble +10 I set it gets stronger. Sorry my bad english! thanks in advance for the help!
  6. goldswimmerb

    7070 popping when relay closes

    Hey all, so I have what seems to be a simple issue, or so I thought it was... I have a 7070 here that makes a fairly loud pop when the relay closes, what I noticed was that if I disconnect the normally closed pins which have 12 or so V from the muting circuit the pop goes away, the muting...
  7. mozcho

    Sony TA-1030 vs Sansui 7070 AU-70

    Hi. I have in my collection Sansui 7070 and Sansui AU-70. Recently there is a Sony TA-1030 for sale, which is two hours drive away from my place (I am in a smaller town). I have been reading about these early Sony units and their high reputations. Since there's no dedicated Sony forum, I think I...
    • mozcho
    • Thread
    • 7070 au-70 sansui sony ta-1030
    • Replies: 5
    • Forum: Solid State
  8. mozcho

    Sony TA-1030 vs Sansui 7070 AU-70

    Hi. I have in my collection Sansui 7070 and Sansui AU-70. Recently there is a Sony TA-1030 for sale, which is two hours drive away from my place (I am in a smaller town). I have been reading about these early Sony units and their high reputations. Since there's no dedicated Sony forum, I think I...
  9. mozcho

    Sansui 7070 Weak Left Channel & the Dolby NR Button

    My Sansui 7070 has been with me over 4 years ago, but was neglected for the past two years. Recently I took it out and play it again, found that the left channel is rather weak and scratchy. Random fiddling led me to discover that if I press the "Dolby NR / 4 Channel Adapter" button (which will...
  10. mozcho

    Sansui 7070 Colors of the Meters

    My Sansui 7070 was purchased used from a few years back. I didn't really take note of the colors of the meters, they are green (for the radios) and blue/purple (VU). But I saw a few photos of the x0x0 series from the web, and noticed that none looked like mine. May I know are these likely to...
  11. damndaniel

    Sansui 7070 + CD Player?

    I was gifted an older Sansui receiver that works as a radio, but I'd like to connect a CD changer which wasn't a common thing in 1976 when the receiver was made. What else do I need? I tried using the available ports on the back that are labeled for other things but I'm pretty sure I can't...
    • damndaniel
    • Thread
    • 7070 sansui
    • Replies: 8
    • Forum: DIY
  12. toymanmsp

    Being challenged by my 7070

    Hi all, this is my first technical post, and am in need of some help and direction. I don't have an electronics background, I'm just learning as I go along. I've run into several issues with my 7070, some of which I've worked out some I haven't. So here goes... 1. I've redone the driver board...
  13. G

    New Member with 7070 trouble

    Hello Gang, I've recently acquired a sansui 7070 I am getting no sound, I checked commonly known issues on the 2624 board but everything is kosher....I'm getting .0 and .1 dc from my outputs. Thank you guys
  14. S

    Sansui 7070 popping, dumping audio temporarily

    I've replaced fusible resistors on the driver board, replaced all the electrolytic caps on the driver board except for the 470uf caps (C05 and C06) and I've also replaced all the caps on the power supply board except for the 10 uf caps (also C05 and C06 on this board) (somehow I overlooked these...
  15. dbrown

    Best Speakers for Sansui AU 555a and 7070

    Hello all, I currently own a Sansui 7070 and plan on getting a rebuilt 555a this week (very excited!!). As for speakers, I have little Celestion Dittons (that I love and used to have paired with my now gone 771) that I plan to pair with the 555a in my small bedroom and some Infinity Qe speakers...
  16. dbrown

    Sansui 7070 Intermittent Alien Noises

    Hello, I love this site - never buy anything without reading the opinions of member here first. Thank you. My beloved Sansui 7070 developed some unusual noises this year: - Alien-like electronic sound - Intermittent - every few - Very quiet (have to listen for it or be in a quiet room) - Not...
  17. hensur

    Sansui 7070 no sound

    Hello, I'm new to this forum because I'm trying to fix my dads old Sansui 7070 receiver. He also had two ESS Speakers which he gave to restoration a week ago. So I tried to get the amplifier he bought with them to work again. He told me it was laying in the basement since it stopped working...
  18. Pioneer SG-750, CT-F7070 and PD-4300

    Pioneer SG-750, CT-F7070 and PD-4300

    Pioneer SG-750, CT-F7070 and PD-4300
    • SX550
    • Media item
    • 4300 7070 750 ctf pd pioneer sg
    • Comments: 0
    • Category: Member's Component
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