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  • Re: Replacement dust covers for Tangential BG400x, BG6000 series - economic feasibility

    Points well taken! I highly doubt the accuracy of those restorers claiming that the originals are polycarbonate, because the same substance I intend to use is impervious to scratches - I tested it hard rubbing with a dry towel to see what the effect would be, and it remained mirror smooth. Of course, there may be variable grades of polycarbonate, but
    Posted to BeoGram (Forum) by yachadm on 02-07-2012
  • Replacement dust covers for Tangential BG400x, BG6000 series - economic feasibility

    I have had some requests from customers to replace existing original scratched and/or broken dust covers. The originals, as we all know, were made from acrylic plastic, which crack around the mounting screws, and scratch easily. In the course of investigating the worthwhileness of this project, I concluded that any replacements must address those issues
    Posted to BeoGram (Forum) by yachadm on 02-07-2012
  • Re: Phono Preamp Option

    Here is a Danish company making drop-in replacements for the original RIAA amplifier (and better components now), and of course it can be used to put an RIAA amp in those turntables which never had one before. http://www.mb-el.net/side3.html Menahem
    Posted to BeoGram (Forum) by yachadm on 02-07-2012
  • Re: BM 4000 Mexico

    Very good! I'll learn from you, so I don't make that mistake! Enjoy it - it's a first-class unit. Menahem
    Posted to The Workbench (Forum) by yachadm on 01-08-2012
  • Re: BM 4000 Mexico

    The left signal comes through C501 - did you get a good waveform there? Then I'd cross-check the voltages at TR48 and TR49 with those in the SM. Menahem
    Posted to The Workbench (Forum) by yachadm on 12-18-2011
  • Re: BM 4000 Mexico

    Is that a burn mark under the 15nF capacitor on the right? Menahem
    Posted to The Workbench (Forum) by yachadm on 12-18-2011
  • Re: What should the inside of a Beovox CX 50 look like?

    Yes, definitely it takes a couple of hundred hours after a refoam (or after a crossover recap) for the sound to sparkle as it should. It can be disappointing when first listening after doing the work, but just a little patience is needed. Menahem
    Posted to The Workbench (Forum) by yachadm on 11-30-2011
  • Re: BM 4000 Mexico

    "When Benny serviced my BM4000 during the summer, he just replaced the entire board, if memory serves." I am completely against that. No ifs, ands, or buts. Yes, that is the modern way techs work, and I can even forgive them when there are hundreds of microscopic SMD components, that make troubleshooting a nightmare. But for heaven's sakes
    Posted to The Workbench (Forum) by yachadm on 11-29-2011
  • Re: Grand Prix 609 K Moderne questions...

    Aaron Very strange that my BM3400 transformer also failed the same day! Anyway, here is a link to Hammond who make output driver transformers for tube equipment (among many other types) http://www.hammondmfg.com/5caud.htm Perhaps there is a problem upstream of the transformers, which overstressed the windings.... Menahem
    Posted to Vintage Products (Forum) by yachadm on 11-29-2011
  • Re: What Are You Working On Now ?

    These are my sources for new B&O parts in North America http://www.atlantic-systems.com/ http://www.approvedaudioservice.com/ http://www.pyramid-audio.com/ In Vancouver BC HVL Electronic Service Centre 604-689-8919 If it's current equipment, they should have stock. Menahem
    Posted to The Workbench (Forum) by yachadm on 11-29-2011
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