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  • Re: Beomaster 5500 type 2332 no lights

    Hi Martin, Thanks for your quick reply. I was using the earth connection on the junction of the 2 large electrolytics (C6 & C7) on the 40v supply. Can you suggest a more reliable place? The relay that I referred to is switched by the StandBy / On/Off signal from the processor, I think it can also...
    Posted to The Workbench (Forum) by Philreck on Wed, Aug 31 2016
    Filed under: beomaster 5500 not working
  • Beomaster 5500 type 2332 no lights

    Hi All, I am struggling to get a Beomaster 5500 back to life. Initially the overload relay was energising, but I traced this to a bit of track that was damaged between R34 and earth. Now that is OK, but still no lights. All the DC power supplies are a bit high: I get 41.4v instead of 40v 37.8v instead...
    Posted to The Workbench (Forum) by Philreck on Wed, Aug 31 2016
    Filed under: beomaster 5500 not working
  • Re: Beomaster 5500 type 2332 no lights

    I am struggling with getting the voltages correct on the power supplies. I have replaced TR 16,17 & 18 plus the 3v3 zener D3. I also replaced the 5v6 zener and fuse (which had blown) on the upc board. Unfortunately I do not have a variac, but on connecting up I briefly saw the standby led light up...
    Posted to The Workbench (Forum) by Philreck on Sat, Sep 17 2016
    Filed under: beomaster 5500 won't power on., Beomaster 5000, beomaster 5500 not working
  • Re: Beomaster 5500 type 2332 no lights

    Well I have wasted a lot of time because I was convinced that I had replaced the D5 zener, but it turns out I hadn't ! Once that was done the voltages returned to spec. The chips on the upc board seem to have been protected by the fuse and zener on that board as outwardly the BM now seems to be operating...
    Posted to The Workbench (Forum) by Philreck on Mon, Sep 26 2016
    Filed under: beomaster 5500 not working
  • Re: Beomaster 5500 type 2332 no lights

    Update I have now found and repaired 3 tracks which had hairline cracks in the top left of pcb 3 and now signal is good from pin 12/17 of the input select IC 1 through to the speakers. It seems that IC1 is not working though. I have checked that supply, strobe, clp & data connections are ok, but...
    Posted to The Workbench (Forum) by Philreck on Tue, Sep 27 2016
    Filed under: beomaster 5500 not working
  • Re: Beomaster 5500 type 2332 no lights

    I'll try measuring using the can as ground. I don't have the stand by dot, there is no sign of life at all externally. Cheers Philip
    Posted to The Workbench (Forum) by Philreck on Wed, Aug 31 2016
    Filed under: beomaster 5500 not working
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