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Home Forums Product Discussion & Questions BeoGram Beogram 4002 – should I replace the capacitors

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  • #43350
    ChristianHak
    BRONZE Member

    Hi all,

    Iโ€™m new to this forum. I bought a beautiful 4002 a year ago that is in great cosmetic condition and had not been used in many years. I went through the usual cleaning and lubricating process that Beolover suggests and now is functioning really well. However, I have two questions:

    1. It functions perfectly other than it appears the sensor doesnโ€™t detect if there is a record on the platter and will drop the needle regardless whether there is a record or not. The light on the sensor arm is working. I have borrowed an oscilloscope from a mate, however, I donโ€™t know how to check the sensor voltage. Any help here would be greatly appreciated (Iโ€™m a furniture maker by trade – not an electrical engineer – so Iโ€™m not too familiar with electronics).

    2. All the capacitors, relays and transistors are the originals. Is it worth preemptively replacing these? I would love to learn how to do this myself if there are any enthusiasts in Brisbane, Australia that would like to help me. I can offer a carton of beer or your favourite whisky ๐Ÿ˜‰ Alternatively, I could fashion a new solid timber trim (oak, walnut, rosewood, or teak) for a 400X as payment.

    Thanks everyone!

    Christian

     

    #43351
    Mark-sf
    BRONZE Member

    Welcome to the forum! You can find the service manual online which describes testing for the detection signal. If you are not comfortable with soldering and desoldering I would fine someone that is. While replacing caps and relays is called for as a general restoration strategy nothing is harmed to wait for a failure if itโ€™s working fine. You can even live with the detection issue if itโ€™s not simply an adjustment.

    #43352
    matador
    Moderator

    While replacing caps and relays is called for as a general restoration strategy nothing is harmed to wait for a failure if itโ€™s working fine.

    Just for saying that, Thank you Mark-sf! Really.

    Location: Paris France
    #43353
    ChristianHak
    BRONZE Member

    Thanks for the reply, Mark. I will take your advice.

    Anyone Beogram enthusiasts here from Brisbane, Australia?

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