in Search
Untitled Page

ARCHIVED FORUM -- April 2007 to March 2012
READ ONLY FORUM

This is the first Archived Forum which was active between 17th April 2007 and 1st March February 2012

 

Latest post 01-10-2012 3:25 PM by Søren Hammer. 85 replies.
Page 1 of 4 (86 items) 1 2 3 4 Next >
Sort Posts: Previous Next
  • 09-27-2011 11:10 PM

    BM 4000 Mexico

    Just came in from McAllen TX, bought on US bay in April, as I didn't have time to pick it up, my sister in love brought it.

    Buying price was USD 103.50 + shipping USD 12.00, honest seller, sometimes the shipping is 40-50.00.

    Was shipped from Tacoma WA to McAllen TX, from there with car to Mex. city, a total of 4355 Km.

    With the known jitters I connected after checking, voltage switch, (no switch) all of, selected tape 1, lights on, turned of, connected speakers, FM nothing, connected cable strip with alligator clip, nothing, moved the dial, nothing, I knew that, the honest seller told me the string is broken, FM 1 stations coming in, increased volume to 4 good sound, checking more stations, same or better as my BM 2400 but with AFC the lights are not even the strength meter works, Checking all keys, all works,checking sliders, no noice all working, checking cooling elements, both sides cool, turned of.

    In the weekend I will open this amazing piece of art, and check forther. I'm so happy, this is better than love without kisses.Stick out tongue

    Isn't it beautiful

    Even got the preset cover, some dust but no grease or goo, the wood has some very light scratches, no problem.

    Only problem, the fabric selector didn't want to hear it, and said "one more", apparently FSs are immun (this word exist ??) to BeoVirus.

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

    Filed under:
  • 09-28-2011 12:06 PM In reply to

    • Evan
    • Top 25 Contributor
      Male
    • Joined on 12-15-2008
    • Ohio | USA
    • Posts 2,601
    • Gold Member

    Re: BM 4000 Mexico

    Soren! Nice buy. I agree, wonderful looking unit - the wood markings are brilliant!!

    Glad to hear it runs too! Laughing

    Evan

     

  • 09-28-2011 12:30 PM In reply to

    • Rich
    • Top 50 Contributor
      Male
    • Joined on 07-11-2010
    • Orlando, Florida, USA
    • Posts 1,089
    • Gold Member

    Re: BM 4000 Mexico

    Welcome to the BM4000 club!  Good luck and congratulations.  I'm sure you'll check for it, but make sure you have equal output in both channels.  That was my first indication mine was failing.  Or are you going to recap it regardless?

    And be sure and look for that envelope inside with the schematic!

    Current primary listening:  SMMC20EN -> BG4002 -> BM4000 -> Beovox M70

     

  • 09-28-2011 1:22 PM In reply to

    Re: BM 4000 Mexico

    Thank you Rich Evan, I'm going to recap, but first of all I want to open it up and clean it, then slowly check everything for repair signs and differences to forum drawings, until now I don't have an item that is build exactly as the drawings, then I have to speak with Martin to see what I 'm going to change, but caps and lamps for sure.

    After check I will connect and adjust the no load currents and let it play until the parts arrive. A good sign is that the cosmetic is OK, and the screw heads for upper and lower cover looks like new.

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

  • 09-28-2011 1:28 PM In reply to

    Re: BM 4000 Mexico

    wow, Soren... that's a 108MHz one!!! Never saw them over here.

    Makes me kind of jealous Embarrassed

    Anyway. good luck with it...

      Gunther

  • 09-28-2011 1:40 PM In reply to

    • Dillen
    • Top 10 Contributor
    • Joined on 02-14-2007
    • Copenhagen / Denmark
    • Posts 5,008
    • Founder

    Re: BM 4000 Mexico

    Nice find indeed !
    Can we have a photo of the serial number label, please ?

    Martin

  • 09-28-2011 1:46 PM In reply to

    Re: BM 4000 Mexico

    Dillen:

    Nice find indeed !
    Can we have a photo of the serial number label, please ?

    Martin

    Yes SirEmbarrassed

     

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

  • 09-28-2011 1:56 PM In reply to

    Re: BM 4000 Mexico

    Yes, we like photos Stick out tongue

      Gunther

  • 09-28-2011 1:58 PM In reply to

    • Dillen
    • Top 10 Contributor
    • Joined on 02-14-2007
    • Copenhagen / Denmark
    • Posts 5,008
    • Founder

    Re: BM 4000 Mexico

    I have "seen the missing" voltage switch and that shiny type antenna socket before
    on US-units that arrived here for service but I never saw a 108MHz version before.
    They seem to be quite common in the states. There's a couple more on
    the US Ebay with 108MHz tuners.

    Martin

  • 09-28-2011 2:07 PM In reply to

    Re: BM 4000 Mexico

    If the forum would just let me, I would also say that my BM4000 is jealous of the 104-108 part of the range!

    -mika

  • 09-28-2011 2:14 PM In reply to

    Re: BM 4000 Mexico

    Sorry for the wait camara run out of power

     


    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

  • 09-28-2011 3:03 PM In reply to

    • Dillen
    • Top 10 Contributor
    • Joined on 02-14-2007
    • Copenhagen / Denmark
    • Posts 5,008
    • Founder

    Re: BM 4000 Mexico

    Thanks.
    At least no hidden info there. Laughing

    Martin

  • 09-28-2011 4:22 PM In reply to

    Re: BM 4000 Mexico

    will post more pics when open, then maybe you can see some differences between 104 and 108 Mhz versions

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

  • 09-28-2011 8:52 PM In reply to

    Re: BM 4000 Mexico

    One of my favorite pieces and it wasnt that difficult to refurb either. I have mine mated with a pair of S-75.

  • 09-28-2011 10:22 PM In reply to

    Re: BM 4000 Mexico

    The plan was to wait for the weekend and open up, but got some kind jittering in my mind and body, and yes I started

    Here top view

    With envelope

    And yes, drawings

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

  • 09-28-2011 10:26 PM In reply to

    Re: BM 4000 Mexico

    Started checking optical

    Big bad cap

    Bad soldering and repaired tracks

    That was the componentside

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

  • 09-28-2011 10:32 PM In reply to

    Re: BM 4000 Mexico

    Solder side, Birds nest and the cap also leeking from the top, cables has burn marks, but from solder iron I think, dont like the birds nest at all

    Dirty solder section, will have to check whats on the other side, and more cable burned

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

  • 09-28-2011 10:39 PM In reply to

    Re: BM 4000 Mexico

    Back to component side

    Trimmers looking ugly

    String is OK but unglued, BTW is the slider with 2 pegs or only 1, it doesn't look broken, but my eyesight isn't the best, will check with my 10x1 loup, didn't find rests inside.

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

  • 09-28-2011 10:47 PM In reply to

    Re: BM 4000 Mexico

    Te "dirty solders" were on both of mine Soren, especially on the preamp board and bird nest around the big cans. Me thinks if I remember right that is part of the ambio. Lots of wires to have to remember to resolder correctly.

    One the 4000's had obvious cap issues and the other was clean from the top view. Only until i started pulling caps did the crust underneath reveal itself. wouldnt surprise me if the 2 470uf  are leaking on the underside.

  • 09-28-2011 10:50 PM In reply to

    Re: BM 4000 Mexico

    All in all not too bad, but for an amateur like me time consuming and kind of difficault, will have to go slow and secure, checking everything 2=3 times before changing anything, will be interesting tomorrow checking it all according to the attached drawing, which by the way is pristine.

    The big caps 5000 MyF, can I change them with 5600, as 5000 is hard to find and if, very exspensive.

    The birds nest, is that original ???

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

  • 09-29-2011 3:40 AM In reply to

    Re: BM 4000 Mexico

    Søren Mexico:
    The big caps 5000 MyF, can I change them with 5600, as 5000 is hard to find and if, very exspensive.

    The value of those is by no means critical, I'm sure that's fine and 4700µ would work as well.

    The tuning slider has at least two prongs originally, maybe even three... and I ended up using glue on the one remaining prong in mine. I tied a loop of string around the prong and dial cord, then secured with hot glue. I like to keep these spots such that they are easy to undo.

    -mika

  • 09-30-2011 9:43 AM In reply to

    • chartz
    • Top 75 Contributor
      Male
    • Joined on 07-20-2009
    • Burgundy
    • Posts 984
    • Gold Member

    Re: BM 4000 Mexico

    Wow Søren! What a nice Beomaster!

    A good deal of work ahead then!

    Enjoy unsoldering all those orange caps and trimmers! 

    Jacques

  • 09-30-2011 11:28 AM In reply to

    Re: BM 4000 Mexico

    chartz:

    Wow Søren! What a nice Beomaster!

    A good deal of work ahead then!

    Enjoy unsoldering all those orange caps and trimmers! 

    As I have been following your threads, you got me hooked on this one, this will be the start for a 4000 system, finishing this BM 4000, next up is a BG 4000 and then the corrosponding speakers, but this BM will be taking some time as I want to get 100% right.

     

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

  • 10-01-2011 1:25 PM In reply to

    • yachadm
    • Top 100 Contributor
      Male
    • Joined on 06-24-2007
    • Jerusalem, Israel
    • Posts 687
    • Bronze Member

    Re: BM 4000 Mexico

    You can be sure that most of those big carbon resistors are completely out-of-spec as well.

    Menahem

    Learn from the mistakes of others - you'll not live long enough to make them all yourself!

  • 10-01-2011 5:14 PM In reply to

    Re: BM 4000 Mexico

    yachadm:

    You can be sure that most of those big carbon resistors are completely out-of-spec as well.

    Menahem

    Thank you Menahem, just visited your website and also read your comments on caps and what they do, will keep all that in mind when starting the repair, my biggest problem is not to find proper spares but to get it safe and fast to Mex city (PITB)

     

    Beosound 3000, BL 4000, BL 8000, BG 2404,BG 5000, BG CD50, Beocord 5000, BM 901, BM 2400, BM 4000, BV S45, BV 3702. There is nothing we cannot do, but a lot of things we don't want to do!!

Page 1 of 4 (86 items) 1 2 3 4 Next >