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Thread: Problem with Leak Stereo 30 Plus - Left Channel

  1. #1
    Join Date: Jun 2015

    Location: London

    Posts: 47
    I'm Peter.

    Default Problem with Leak Stereo 30 Plus - Left Channel

    Hi

    I have a Leak Stereo 30 Plus which seems to have issues with one of the channels. When I got it, it had all the usual signs of sitting in a corner for years gathering dust. After spraying all the pots and switches and taking out the boards and cleaning the contacts with emery paper all the crackling etc seems to have disappeared. I do have a problem though that one of the channels is not working.

    When connected to Replay: With the Tape Monitor off it plays through the Right Speaker. Tape Monitor on and it plays through both left and right.

    When connected to Tuner 2: With Tape Monitor off it plays through Right Speaker. Tape monitor on it does not play through either speaker.

    I have swapped the preamp boards around and then I get sound out of the Left Speaker in the above scenarios, so I guess the board itself is the problem. I also assume the Replay / Tape Monitor on bypasses the preamp boards?

    Being a novice with electronics I was wondering if there was a way to diagnose the problem on the preamp board (any usual suspects)?, or should I look to find a replacement board that may be lying around?

    Any advice appreciated

  2. #2
    Join Date: Nov 2017

    Location: Glossop

    Posts: 26
    I'm dave.

    Default

    Hi try this site as they are in London http://www.michaelmauricerepairs.co....d-repair.shtml

    Dave
    Any tool can be used as a hammer but a screwdriver makes the best chisel

  3. #3
    Join Date: Apr 2012

    Location: Southall, West London

    Posts: 34,494
    I'm Geoff.

    Default

    I wouldn't throw too much money at a Leak Stereo 30 Plus. You can easily invest more money than the amp is worth in getting repairs done and it's not the greatest amp around in the first place. If it's not an easy fix, put it away or sell it as it is. Your cash could be better spent on an alternative amp.

  4. #4
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 20,171
    I'm Martin.

    Default

    I disagree, their only issue is a lack of power. Otherwise they are very open and sweet-sounding. Worth fixing IMV.
    Martin



    Current Lash Up:

    Technics SL1200P CD Player * NVA P90SA passive pre / Krell KSA50S Power amp * JM Lab Electra 926 loudspeakers *



    'The best I advice I ever received was to always remember that no-one else has any idea what they are doing either.'

  5. #5
    Join Date: Jun 2015

    Location: London

    Posts: 47
    I'm Peter.

    Default

    Thanks for the feedback. The purchase was largely nostalgic as this was the amp my father had and I spent hours listening to in my teenage (and pre teen) years. Even switching it on with that click of turning the volume knob bought back memories. I paid 40 for it so not a major drain on the finances. I was more concerned about arriving home with another piece of kit and my wifes reaction

    Other that memories I was looking for a low powered amp to drive my early Klipsch Heresy's. The little listening I have managed through the combination when the preamp section is skipped sounds quite promising.
    So if I can pick up a preamp board going as parts or can fix the existing one for not much money I would consider it mission accomplished.

    @nutteronthebus - thanks for the link, Ill give them a shout and see if they can help.
    --------------------------------------------------------------------------------------------------------

    Source: Thorens 125 Mk1 with SME 3009 Mk2, Arcam CD72, Squeezebox Duet
    Amplification: Classic No 9 Pre, Quad 303 Power, Angle Audio Reference 1 Phono
    Loudspeakers: Klipsch H700, JR149
    Cables/stands: Currently a mess
    Other: Beresford Caiman Mk2

  6. #6
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 1,501
    I'm Lawrence.

    Default

    When there are old plug in boards, it's always worth checking the plugs or pcb contacts and sockets for corrosion or oxidation, a bit of servisol or deoxit should sort that.

    Sent from my BLN-L21 using Tapatalk

  7. #7
    Join Date: Nov 2017

    Location: Glossop

    Posts: 26
    I'm dave.

    Default

    on ebay there is a Leak stereo 30 book https://www.ebay.co.uk/itm/VINTAGE-L...wAAOSwU91aZItF

    Dave
    Any tool can be used as a hammer but a screwdriver makes the best chisel

  8. #8
    Join Date: Nov 2017

    Location: Glossop

    Posts: 26
    I'm dave.

    Default

    hi this is a cct diagram of the Leak

    Dave
    Attached Images Attached Images
    Any tool can be used as a hammer but a screwdriver makes the best chisel

  9. #9
    Join Date: Jun 2015

    Location: London

    Posts: 47
    I'm Peter.

    Default

    Thanks Dave,
    The weekend is here so I can play with the amp a little more. Bought some Deoxit to see if that sorts out the channel issue. I fear that I am going to need to buy a bust up Stereo 30 Plus going for parts to sort out my problem.
    Will let you know how I get on this weekend.

    P

  10. #10
    Join Date: Oct 2017

    Location: West Wales

    Posts: 43
    I'm Alan.

    Default

    I would fix it too if it were mine. Not a great amp, but easy to work on and pleasant to listen to.

    I expect you have seen this epay listing?
    https://www.ebay.co.uk/itm/Leak-Ster...AAAOSwLwBagfg9

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