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  • Wanted: Beomaster 8000 tone/filter Alu Cover Assembly

    hi all, i am chasing the big Alu cover assembly for the tone/filter/programming section (top left if in doubtj doesn’t need to be mint, however functionable....pleeease, any offers...pm will do fine ๐Ÿค™๐Ÿ™ THANK YOU Alf
    Posted to BeoWorld Private Wanted (Forum) by ALF on Wed, Jul 31 2019
    Filed under: BM8000 Alu cover assembly
  • Re: Beomaster 8000 restoration #3

    and a last one....you will notice some stray light escaping...that is because the displays are in testing and not yet sealed !
    Posted to Vintage Products (Forum) by ALF on Mon, Jul 29 2019
  • Re: Beomaster 8000 restoration #3

    and another one.....
    Posted to Vintage Products (Forum) by ALF on Mon, Jul 29 2019
  • Re: Beomaster 8000 restoration #3

    Hi All, when is a project ever finished............? I won't answer that ! finally had the courage in a moment of madness - had to wait for that though - and attacked the faulty display.....! this had to be the most punishing job I have ever done...YES, it was.....but now it looks like that....still waiting for the black glue to seal and close the three displays properly, however a giant leap for ME - believe me! I have attached a couple of pics.......enjoy......you should try it one day. at
    Posted to Vintage Products (Forum) by ALF on Mon, Jul 29 2019
  • Re: Beomaster 8000 restoration #3

    Ok, time to report back: first, no screws sighted - good news where the boards #1 & 2 connect I inspected the solder joints again, two looked suspect and were reflown - the plugs itself git the deoxit treatment. surprisingly the two tantal caps 2C21 & 23 were put in the wrong way - I wonder whether in this instance it is important or not ?? naturally I replaced both and pit them in according to the circuit diagram !! next I discovered the connector 1P2 was loose, not providing a secure connection
    Posted to Vintage Products (Forum) by ALF on Wed, Jun 19 2019
  • Re: Beomaster 8000 restoration #3

    Looks like I arrived at the perhaps last major roadblock ?? !! the tuner !! a quick recap: FM stations can be tuned in and stored but no audible signal output ?? MPX lights up once a station/frequency is detected but signal strength meter is not moving as mentioned previously, I should measure +-15VDC at 2IC6 pin8/6 but it is not there. these voltages are however present at 2P8 - 1 and 3 but somehow don’t get through ??? I also mentioned earlier the replacement of 2IC6 !! who could give some
    Posted to Vintage Products (Forum) by ALF on Tue, Jun 18 2019
  • Re: Beomaster 8000 restoration #3

    Thanks Jacques - problem solved๐Ÿ™๐Ÿค— ALF
    Posted to Vintage Products (Forum) by ALF on Tue, Jun 18 2019
  • Re: Beomaster 8000 restoration #3

    Sadly the resistor trick - lifting 4R143/145 etc - has no impact on that static crackling noise when switching inputs and adjusting the volume. I decided its time to revisit the uP-board after studying some of Beolover’s blogs reflowing a number of suspicious joints. the memory issue, storing FM stations, seems cured and the static crackling noise is much better, although not entirely gone. an interesting but annoying new issue turned up: When turning the BM on the balance setting is right
    Posted to Vintage Products (Forum) by ALF on Sun, Jun 16 2019
  • Re: Beomaster 8000 restoration #3

    Ok, saturday.....workday again ! couldn’t help to get back to my special friend the tone/filter board : game enough to change the vol attenuator chips AD4110KN one after another And see........both channels have audible sound - hurray ๐Ÿ™๐Ÿ˜ so, another positive step in the right direction.....next to that awful crackling noise, which is quite audible when switching inputs and vol adjustments. an initial “blind” adjustment of trimmer pots R146/246 delivered no relief and I may - as
    Posted to Vintage Products (Forum) by ALF on Fri, Jun 14 2019
  • Re: Beomaster 8000 restoration #3

    Well, some partial good news: somehow I got the right channel working, using TP1 and 2. getting some hiss on the left speaker but that’s it ! so far no findings on the input cage and preamp board. i have gone through the cables once again but everything is ok. the switching between inputs is also working. I have a couple of AD7110 ICs of chinese make......which i have not tried out ?! I believe both output amps are working, having adjusted the no-load current and DC-offset. yes I know, sometimes
    Posted to Vintage Products (Forum) by ALF on Thu, Jun 13 2019
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