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Thread: Amplifier service

  1. #1
    Join Date: Jul 2011

    Location: Northamptonish

    Posts: 1,495
    I'm Peter.

    Default Amplifier service

    Just picked up my Marantz PM-4 amplifier from beautiful Bedlington, and it's sounding great. I'd only had this amp a couple of months when it started to cut out and generally behave badly ... not surprising, maybe, as it dates from 1980. Anyway, Jez had a look at it, fixed the immediate problems ... switch contacts, new speaker relay and voltage regulators ... and also replaced 43 ancient electrolytic caps, so it's measuring 'in spec.' and will now hopefully see me out

    Anyone who has ever heard the PM-4 will probably agree it's a bit special, and well worth the effort of resurrecting. Anyway, I'm well chuffed ... fair price, excellent service .. thanks, Jez! (and cat).
    Last edited by petrat; 07-08-2017 at 12:01.

  2. #2
    Join Date: Oct 2012

    Location: NE England

    Posts: 4,365
    I'm Jez.


    Thanks for that Peter. Glad to be of help It does indeed sound rather nice!
    Arkless Electronics-Engineered to be better. Tel. 01670 530674 (after 1pm)

    Modded Thorens TD150, Audio Technica AT-1005 MkII, Technics EPC-300MC, Arkless Hybrid MC phono stage, Arkless passive pre, Arkless 50WPC Class A SS power amp, (or) Arkless modded Leak Stereo 20, Modded Kef Reference 105/3's
    ReVox PR99, Studer B62, Ferrograph Series 7, Tandberg TCD440, Hitachi FT-5500MkI, also FT-5500MkII
    Digital: Yamaha CDR-HD1500 (Digital Swiss army knife-CD recorder, player, hard drive, DAC and ADC in one), PC files via 24/96 sound card and SPDIF, modded Philips CD850, modded Philips CD104, modded DPA Little Bit DAC. Sennheiser HD580 cans with Arkless Headphone amp.
    Cables- free interconnects that come with CD players, mains leads from B&Q, dead kettles etc, extension leads from Tesco

  3. #3
    Join Date: Sep 2009

    Location: Bournemouth

    Posts: 3,977
    I'm Dan.


    Yep got one here....
    Main System: Yamaha CR-820 Receiver & Musical Fidelity E50 Tuner & Pioneer PD S505 Precision CD Player & Mission 770 Freedom Speakers + Linn Interconnects & Van Den Hul The Wind hybrid Speaker Cable
    Vinyl -
    Rega Planer 2 with Rega Britain Green 250 Tonearm & Upgraded Van Den Hul Oil Bearing & Ortofon Super OM-10.

    Second System:
    Technics - SU-C909U Pre-Amplifier & SE-A909S Power Amplifier & Technics ST-GT 1000 Tuner & Marantz CD67 Original SE CD player & Thorens TD-125 MK1 Turntable & SME 3009 Series 1 & Shure V15 Type II Cartridge & SME 2000 Plinth & Celestion A compact Speakers

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