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chartz

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Viewing 20 posts - 161 through 180 (of 234 total)
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  • in reply to: Strategy for Changing Capacitors and Trim Pots on FM Tuner #39355
    chartz
    GOLD Member

    They can’t go bad but resistors and caps may change values and re-alignment required anyway, even when the device has never been touched. Sometimes especially if the tuner was never revised!

    Some tuners never get misaligned though, and that’s impressive. I have a Beomaster 5000 (1967) that still has its original components and settings and it works perfectly.

    I bought two FM3’s of the same period, one had its IF completely out and the other was still perfectly aligned. That’s pretty unpredictable.

    Now some designs rely more on trimpots than others.

    Location: Burgundy
    in reply to: Strategy for Changing Capacitors and Trim Pots on FM Tuner #39353
    chartz
    GOLD Member

    Radio alignment is difficult and requires a lot of experience, even with the proper tools.

    I for one won’t touch it with a barge pole ☺️

    The only thing I do is the adjustment of 19 kHz frequency.

    Location: Burgundy
    in reply to: 5500 CD Player logic board wanted #39280
    chartz
    GOLD Member

    And I might add that if the thermal fuse melted, you have to find the cause of that on the main board.
    A shorted cap, diode… investigate. Something I still love doing, even though my abilities decline little by little. Enjoy.

    Location: Burgundy
    in reply to: Beomaster plastic trims veneering #39345
    chartz
    GOLD Member

    Hi,

    Thanks.

    I do remember Craig’s job. The 4400 is all chipwood though.

    The tricky part will be to cut it on the edges of the plastic trims.
    I intended to glue the raw veneer to the plastic and cut it along afterwards.

    I also have a Beomaster 8000 to do, one found in a scrapyard that I saved and which actually works. So if that works I’ll do it too.

    Location: Burgundy
    in reply to: Beomaster plastic trims veneering #39342
    chartz
    GOLD Member

    Thanks John. What do you use then?

    Location: Burgundy
    in reply to: Beomaster 1900-1 stand-by fault [solved] #39109
    chartz
    GOLD Member
    in reply to: Beomaster 1900-1 stand-by fault [solved] #39108
    chartz
    GOLD Member

    Hi,

    Usual stuff… done ?

    This 1900 type 2903 is not the most cleanly executed, as regards PCB. Lots of solders still had a lot of flux around. The later 1900-2 was much cleaner. Looks original too. Someone had indeed been there before but wasn’t up to fixing it (as usual, touch panel not correctly mounted, etc).

     

    FDD4FECE-6E8B-4541-8F99-1C6364D8D43A

    Now looking for someone to veneer the trims. The previous owner just removed it from the front, advertising it as mint ?

    346CB441-DF2B-4FC0-89EF-1A6C4B09BA9A

    Unless someone here has new or mint ones, that is!

    Martin, how come you haven’t come up with a re-veneering service yet? ?

    Edit: is that why there are so many white ones? ?

    Jacques

    Location: Burgundy
    in reply to: 5500 CD Player logic board wanted #39276
    chartz
    GOLD Member

    Chances are that the transformer’s thermal fuse has had it. Do test that first.

    Maybe the board is still good.

    Location: Burgundy
    in reply to: Turntable is in good cosmetic condition… #39283
    chartz
    GOLD Member

    Ha ha! ?

    Location: Burgundy
    in reply to: 5500 CD Player logic board wanted #39274
    chartz
    GOLD Member

    Hi,

    Can’t you repair the one you have? It isn’t rocket science!

    Location: Burgundy
    in reply to: BeoGram 1000: alternative RIAA PreAmp ? #36580
    chartz
    GOLD Member

    Hi,

    Yes to all! Except for 5 ☺️

    Even 2.2 µF will do.

    Location: Burgundy
    in reply to: Beomaster 1900-1 stand-by fault [solved] #39104
    chartz
    GOLD Member

    Remember guys when we posted all those repair threads back in the day?

    Have people just lost interest?

    Location: Burgundy
    in reply to: Beomaster 1900-1 stand-by fault [solved] #39103
    chartz
    GOLD Member

    Thanks ?

    Location: Burgundy
    in reply to: Beomaster 1900-1 stand-by fault [solved] #39100
    chartz
    GOLD Member

    I cracked it – TR25 was bad after all, but is still fine on the bench, statically. I had it in the drawer, a BC172B.

    Good on the tester then but bad under pressure. I just shorted EC and found out the Beomaster switched off doing that.
    I hate that kind of fault! A transistor is dead but it wants to live when tested with low voltage…

    The BM1900 now switches off normally, and as suspected IC6 is good (it measured so).

    Thanks for looking.

    Jacques

    Location: Burgundy
    in reply to: Finally! #37071
    chartz
    GOLD Member

    Wow!
    Who else than our very own Martin could come up with these?

    Gorgeous, well done once again ??

    Location: Burgundy
    in reply to: Beoworld iOS app gone? #38901
    chartz
    GOLD Member

    That’s right. But the new forum allows about everything you might want to do anyway. The only – and very useful – interest of the app was to be able to take a photo directly for insertion in your posts.

    Location: Burgundy
    in reply to: Which Beogram turntable #38871
    chartz
    GOLD Member

    True. The Beolab 8000 and the pizza boxes are a joy to use and behold.

    Location: Burgundy
    in reply to: Which Beogram turntable #38869
    chartz
    GOLD Member

    I agree: don’t bother and just enjoy pressing the start button of a nice 1700 or 5000. Or of course a 4000…

    Location: Burgundy
    in reply to: Which Beogram turntable #38863
    chartz
    GOLD Member

    None can be remote controlled by B&O modern equipment. Try to find a nice mint Beogram 1700 of 5000. But you’ll need a phono preamp.

    Location: Burgundy
    in reply to: Breaking Beomaster 8000 for Parts #38848
    chartz
    GOLD Member

    Hi Alf. ☺️

    PM sent.

    Location: Burgundy
Viewing 20 posts - 161 through 180 (of 234 total)