Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

hcraig244

Forum Replies Created

Viewing 20 posts - 1 through 20 (of 267 total)
  • Author
    Posts
  • in reply to: Beomaster 6000 quad #65626
    hcraig244
    BRONZE Member

    I’m guessing you have these from the circuit diagram you have posted….however I cant find that schematic in my manual….which is a little odd, all the same its a good place to look…..I checked the operation of both of my 6000 units and one is working perfectly and the other has an issue with the drive motors for the volume/bass/treble and balance potentiometers are not driving, i suspect the common drive belt but will have a look inside….if you need any measurements while im in there let me know….

    in reply to: Beomaster 6000 quad #65624
    hcraig244
    BRONZE Member

     

    • This reply was modified 3 days, 13 hours ago by hcraig244.
    in reply to: Beomaster 6000 quad #65617
    hcraig244
    BRONZE Member

    Not great image i know but i think this is where you could make a start

    • This reply was modified 3 days, 13 hours ago by hcraig244.
    in reply to: Beomaster 6000 quad #65574
    hcraig244
    BRONZE Member

    Check all the black wires that run all over the machine, common negative, these wires are for some reason, best known only to the B&O design team, single strand wires and break easily…they dont solder too well either…i have had several issues with the point in the chassis where a whole bunch of these come together….take a look ;¬)

    Craig

    in reply to: Beomaster 3000-2 – smoky resistors! #65506
    hcraig244
    BRONZE Member

    While axial resistors and inductors share a similar axial lead style, they are distinct components. Resistors limit current flow, while inductors oppose changes in current and store energy in a magnetic field.

    my first experience with B&O equipment stemmed from a friend purchasing a Beomaster 2000 amp way back in the early 70’s…..i fell in love with it even though, as a poorly paid instrument artificer apprentice,  it was way beyond my financial means. Roll the years on forty or so years and I also spotted a BM3000 on ebay for a ridiculously low price with a failed left channel…..how hard can a fix be I thought to myself? That was the beginning of a long and entertaining journey into vintage B&O equipment repair/restoration.

    The BM3000 turned out to be a bit of a failure but I learned a lot during the experience, largely if not entirely  from the input of the member on this site…..lots of members posted in what was then the workbench room….there was always some restoration/repair going on and the advice and support was exceptional…..those members are still here by the way….additionally B&O equipment was more widely available then and at much more affordable prices…..don’t know what happened but prices suddenly rocketed.

    My advice, if your serious about this is join as a silver member and get access to the workshop manuals and circuit diagrams, identify the failed components and start to post pictures and measurements in here and people will start to input advice and guidance, they wont be able to resist…… be prepared for some initial disappointments and frustrations, you will need some test equipment and basic soldering skills…….but I feel given your desire to emulate your late grandfather you may enjoy, dont buy any components from ebay without first seeking advice in here……lots of fake transistors out there!

    Craig

    • This reply was modified 1 week, 2 days ago by hcraig244.
    in reply to: Beomaster 3000-2 – smoky resistors! #65482
    hcraig244
    BRONZE Member

    Thats fine…

    Would i be right to say that this is only one channel that is smoked and the other is still OK, I’m suspecting the output transistor has failed. Without extensive testing its hard to say for sure….the output transistors are Darlington Pairs and you would need to remove them as a start and test them…if blown they will need replacing along with the burned resistors you can see…also the power transistors normally fail due to something else failing first, that thing will need finding.

    Looking at your post you dont have much experience on this sort of thing, as a silver member you can access the manuals in here to help you get an idea of whats ahead of you….

    Craig

    in reply to: Beomaster 3000-2 – smoky resistors! #65477
    hcraig244
    BRONZE Member

    Hi

    Is this a Beomaster 3000…..if so at first glance it looks like a possible power transistor short could be responsible

    in reply to: Beomaster 8000 Fault #65299
    hcraig244
    BRONZE Member

    That will need to be quite a long weekend…..

    in reply to: Beomaster 8000 Fault #65291
    hcraig244
    BRONZE Member

    Peter

    You gave it to me several years ago for replacing the 33/45 rpm relay in your BG6000….or was it your BG4001 (with the black facia) i’m taking good care of it 😁

    in reply to: Beogram 4000 – servo optical diaphragm adjustment #64763
    hcraig244
    BRONZE Member

    It doesn’t address your question around item no 6 on the above procedure, which I cant either…..I note that Rudi deftly avoids that  final step also ;¬)

    Craig

    in reply to: Beogram 4000 – servo optical diaphragm adjustment #64749
    hcraig244
    BRONZE Member
    in reply to: Beogram 4000 servo belt question #64592
    hcraig244
    BRONZE Member

    I have been inside several BG4000 over the past few years and not seen a carriage motor with a pulley wheel with a different profile to that which yours has, that doesn’t mean there are none out there of course. Regarding the belt I have had one with a round profile belt that worked fine despite being somewhat floppy, I suspect it started life as a O ring and not a drive belt….I replaced it with a belt from Dillen and adjusted the tension accordingly. The Service Manuals B&O supplied are very detailed and for the most part accurate….but im sure im not alone when it comes to stumbling over the occasional inconsistency therin……..buy a replacement alloy pulley for the drive shaft and a new belt and you will be fine, yours does look perfectly fine by the way……I should replace mine also, just havent got around to it yet ;¬)

    Craig

    in reply to: Beomaster 6000 (2702) Remote Control #64338
    hcraig244
    BRONZE Member

    last

    Attachments:
    You must be logged in to view attached files.
    in reply to: Beomaster 6000 (2702) Remote Control #64332
    hcraig244
    BRONZE Member

    some more

    Attachments:
    You must be logged in to view attached files.
    in reply to: Beomaster 6000 (2702) Remote Control #64327
    hcraig244
    BRONZE Member

    here we go…

    Attachments:
    You must be logged in to view attached files.
    in reply to: Beomaster 6000 (2702) Remote Control #64326
    hcraig244
    BRONZE Member

    That’s a very ambitious undertaking Jouni..

    All credit to you, the cost of producing such a piece must be high…not including your time of course which you give freely, my few dealings with custom laser printed items has always resulted in high costs.

    I will provide the images you have requested today……keep the pictures coming.

    Craig

    in reply to: Beomaster 6000 (2702) Remote Control #64216
    hcraig244
    BRONZE Member

    Jouni

    I bought the 15v battery relatively recently, amazon I think VARTA No 4074.15v.V74PX

    Craig

    in reply to: Beomaster 6000 (2702) Remote Control #64199
    hcraig244
    BRONZE Member

    Oh….and a 15v battery

    If I can help anymore let me know

    Craig

    Attachments:
    You must be logged in to view attached files.
    in reply to: Beomaster 6000 (2702) Remote Control #64194
    hcraig244
    BRONZE Member

    Couple more

     

    Attachments:
    You must be logged in to view attached files.
    in reply to: Beomaster 6000 (2702) Remote Control #64189
    hcraig244
    BRONZE Member

    No worries Jouni

    Not the best images but take a look….

    Attachments:
    You must be logged in to view attached files.
Viewing 20 posts - 1 through 20 (of 267 total)