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Dillen

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Viewing 20 posts - 501 through 520 (of 718 total)
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  • in reply to: Beogram 4002 No sound at all #45945
    Dillen
    Moderator

    The solenoid is fairly sturdy. An electronic problem could cause damage to it, though.

    There should be no oil or grease on/in the solenoid. It should be clean and dry.

    Martin

    in reply to: Beogram 4002 No sound at all #45943
    Dillen
    Moderator

    If the Beogram didn’t lower the arm itself, it wouldn’t have deactived the muting circuit either.
    Pressing down on the tonearm to make the needle touch the record won’t produce sound.

    Martin

    in reply to: Beocenter 2200 #45940
    Dillen
    Moderator

    What parts are not available?

    Check if the motor bushing touches the metal bracket.
    If it does – replace the motor mounts.
    https://www.beoparts-shop.com/product/motor-suspension-rubber-bushing-grommet-f-several-beogram-beocenter-models-2/

    If the motor itself is noisy, it must be taken apart and repaired (most can be)
    – or replaced, and a good condition used original motor would be the way forward in that case.

    Martin

    in reply to: Beogram RX2 datalink #45905
    Dillen
    Moderator

    In the OP, your first schematics are for Beogram 1800 (= Beogram 2000 but no datalink), and the next is for Beogram 2000 & 5000.

    The RX-2 schematics shown in the same manual is wrong. It should’ve shown RCA plugs.

    Martin

    in reply to: Beogram RX2 datalink #45903
    Dillen
    Moderator

    The Beogram RX and TX (R for Radial. T for Tangential) models were intended primarily for customers having a non-B&O receiver/amplifier.
    They have twin RCA plugs from factory and none of them have datalink support.

    Martin

    in reply to: Where to find BD697? #45743
    Dillen
    Moderator

    If the output stage transistors are held by a long bar with threaded brass inserts, the output
    stage transistors are special in that  they have a matching, relatively large, “hole” for the mounting bar.
    If that’s the case PM me and I’ll have a look in the dungeons.

    – And check everything else in that circuit before powering up again.
    Of course also check the idle current setting. Replace the trimmer, adjust and monitor the current while slowly powering up on a variac.

    Martin

    in reply to: Beocord 5500 will not stop #45614
    Dillen
    Moderator

    It wears out the motor brushes instead.
    Anyway – your deck acts normally.

    Martin

    in reply to: Beocenter 7700 power supply problem #45524
    Dillen
    Moderator

    You need to diagnose the problem before replacing any components.
    Make sure that the problem really IS with the idle current before replacing anything.
    Chances are that you will only introduce more problems, that could make repairs more difficult – as in f.e. being unable to set the new trimmers right because the original fault is still present, keeping the Beocenter from staying powered up – and even if the original fault is found and fixed the new trimmers setting could be wrong so it still keeps shutting down.

    I would also leave the capacitors alone for now. At least until the present problem has been diagnosed.

    One thing at a time.

    Martin

    in reply to: Wanted: cassette heads #45633
    Dillen
    Moderator

    Bad tantals around the Dolby IC. I’ve seen that a couple of times.

    Martin

    in reply to: Beogram 5500 turntable – 2nd arm #45594
    Dillen
    Moderator

    Mark-sf wrote:
    B&O made the switch of sides in all of their turntables  in the mid 1980’s. They still perform the same record detection function. They became wider to display the speed while the cartridge carrier became narrower to support the smaller cartridges. The older service manuals for the 400x series provide the most detail on the tracking system.

    That’s not quite right;

    Earlier Beogram tangentials use the second arm for record detection, and the arm contains an optical sensor system (light, lens etc.).
    In order to do this the sensor arm needed to be “in front” of (to the left of) the tonearm.

    Beogram 5500 and all other type 59xx decks have the extra arm to the right of the tonearm.
    This second arm has no sensor and performs no function apart from carrying the speed indicator lights at its outer end.  In these decks records are detected by weight.

    Martin

    in reply to: Dead BeoVox 100 woofer, but continuity trace OK? #45561
    Dillen
    Moderator

    Sure it’s not something else? A broken lead or a filter problem?
    Have you tried swapping with the woofer from the other speaker?
    Does it make a very tiny click-sound when you connect your ohmmeter across it?

    Martin

    in reply to: Beogram TX2 Dust Cover #45136
    Dillen
    Moderator

    The metal top plate on Beogram TX2 is smaller than on most other type 59xx decks, so the original cover is lighter and the holding springs are different.

    Take out the springs, stretch them by hand so they end up apprx 5-6 mm longer than they were, and fit them again.

    Martin

    in reply to: Beocord 3300 No Power #44977
    Dillen
    Moderator

    No. That’s two different transformers.

    Martin

    in reply to: Beocord 3300 No Power #44975
    Dillen
    Moderator

    I seem to remember it can be rewired internally. I don’t have the servicemanual at hand now.

    Else: https://beoparts.com/2018/11/22/mains-transformer-220-240v-8013312/

    Martin

    in reply to: Beocord 7000 muffled sound #44996
    Dillen
    Moderator

    Tapehead cleaner, isopropyl alcohol or carburettor alcohol (same stuff) and cotton buds.
    NEVER acetone or paint thinner or the likes.

    Martin

    in reply to: B&0 3000 model 2402 Fm fréquence above 104 #45003
    Dillen
    Moderator

    It has nothing to do with it being an export model or not;

    Beomaster 3000 build-series 1, 2 and 3 tuned to 108MHz.
    From build series 4 it was limited to 104MHz.
    You cannot “modify” it. You must replace the tuner module and front panel = easier to find the right Beomaster.

    Beomaster 4000 was also produced in versions with both ranges.

    Martin

    in reply to: Beomaster 4500 #44969
    Dillen
    Moderator

    A Beomaster with a bad backup battery can act up in different ways.
    If nobody knows which settings and what content is being stored in memory, things really
    get quite unpredictable.

    Martin

    in reply to: Beocord 3300 No Power #44972
    Dillen
    Moderator

    A cracked solder joint, perhaps.
    Check around the voltage regulators.

    Martin

    in reply to: beocenter7700 in a sc20 cabinet #44958
    Dillen
    Moderator

    SC20 is for Beocenter 2000/2002.
    You would want a SC77:

    SC77_6

    Martin

    in reply to: Beomaster 2000:2801 tuning/stereo lights #44963
    Dillen
    Moderator

    The tuning lights will only come on with a reasonably good antenna signal.
    As will stereo reception (and indicator).

    Martin

Viewing 20 posts - 501 through 520 (of 718 total)