Technics SU-CH7 Amp problems

Discussion in 'General Electronics Chat' started by Julian Belmonte, Apr 27, 2015.

  1. Julian Belmonte

    Thread Starter New Member

    Apr 25, 2015
    4
    0
    Hi there

    I have an old intergated Technics stereo I've been wanting to make work on and off for years. It's the amp thats not be working. When I turn the whole thing on all the other units work apart from the amp which remains on standby with the little red light on. I've checked as many fuses as I can see inside. Can anyone make any suggestions as I'd like to make it work if I can as I love reserecting stuff.

    Thank you

    Julian
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,986
    745
  3. Julian Belmonte

    Thread Starter New Member

    Apr 25, 2015
    4
    0
  4. MrChips

    Moderator

    Oct 2, 2009
    12,441
    3,361
    Let us see what we have to work with it terms of your tools, test equipment, knowledge and background.

    What of the following do you possess:

    1) DMM
    2) oscilloscope and probes
    3) an audio signal (or function) generator
    4) source of music, e.g. mp3 player
    5) playback amplifier, e.g. amplified PC speakers
    6) set of hand tools
    7) soldering iron
    8) desoldering tools, solder wick, solder sucker
    9) collection of electronic components such as assorted resistors and capacitors
    10) digital camera
    11) means and methods of uploading clear sharp photos to AAC forum
    12) basic knowledge of electronic circuit schematics

    That should do for now.
     
    absf likes this.
  5. Julian Belmonte

    Thread Starter New Member

    Apr 25, 2015
    4
    0
    Hi!

    Ok numbers 1-3 no,
    numbers 4-8 yes,
    9 no,
    10,11 yes
    and 12 I know someone who is.

    Not very good am I!

    Thank you Mr chips
     
  6. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,986
    745
    you definitely need a Dmm (multimeter) suggest that be the first purchase...
     
  7. crutschow

    Expert

    Mar 14, 2008
    13,013
    3,233
    If you want to start off cheap you can get a DMM from Harbor Freight (sometimes they offer a free coupon for one).
    That's all you need for your troubleshooting.
     
  8. Julian Belmonte

    Thread Starter New Member

    Apr 25, 2015
    4
    0
    Ok thanks. I've a friend who has a multimeter. I'll ask him if I can use it. Will this be a start to find out which component is the problem ?

    Thank you
     
  9. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    No, just storing nuts for winter. We are going to have you measure voltages with a piece of string. :rolleyes:
     
    Sinus23 likes this.
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