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  • Re: Beosystem 4500 not working

    Is there a standby light on the Beomaster? Praps a silly question,but does the Beomaster respond to manual commands at the glass operation panel? If so,do you need to reset the option code?(sound-1-store,via BL1000.Unit in standby) Nick
    Posted to General Discussion & Questions (Forum) by solderon29 on Thu, Apr 4 2019
  • Re: Beocord 6500: drawer not moving

    Oddly,there is no reference to this resistor in the parts list at all.I've looked in other manuals for machines that employ the same protection system,but they don't list it either. As Martin suggests,it looks to be a 1/4 watt device,but I would imagine that it should be a "fusible"type resistor,ie intended to fail under load rather than "flameproof". If the original was in fact o/c it would explain why the safety circuit is preventing the upc from operating the system
    Posted to Vintage Products (Forum) by solderon29 on Tue, Apr 2 2019
  • Re: Beocord 6500: drawer not moving

    I think the resistor is in fact R65(22ohm)and it's a current limiter for the capstan motor,which suggests that you may have another problem too?It could explain why there is no play and rewind though,and would point towards a faulty capstan motor? What might be happening,is that if the tape mechanism is jammed by perished drive belt's or lack of lubrication,the capstan motor is drawing excess current and triggering the machines protection system,so preventing any other functions? Is the mechanism
    Posted to Vintage Products (Forum) by solderon29 on Sun, Mar 31 2019
  • Re: Beomaster 4000

    Thanks for doing and sharing the groundwork that you have done with this project Simon.Presumeably,Canterbury Windings could produce more of these transformers to order as they will have the spec.on file now.I imagine that a similar but lower power version could be made up for the BM3000-2 now also? The mains transformer and function select switches are the two "Achilles Heels"of these otherwise robust designs. Nick
    Posted to The Workbench (Forum) by solderon29 on Sun, Mar 31 2019
  • Beolab Penta 1(6602)

    I've rebuilt these super speaker's,and although there are now more teeth marks along the edge of the workbench,I'm pleased with the result. I'm puzzled though by the action of the standby light. I remember that this glowed dimly red in standby,then went green as the unit powered up.If the light turned yellow at any time(fault mode!)you reached for fire extinguisher and paracetomol? On both of my units,the light seems to be orange in standby,then brighter orange at power up.No yellow
    Posted to The Workbench (Forum) by solderon29 on Sun, Mar 24 2019
  • Re: Beocenter 9500 smell...

    I allway's assumed that the "beopong"was due to the material that was used in the pcb's? Later and current product uses glass fibre in the pcb's,but this just seems to emit a different albeit lesser smell. The B&O policy of their systems being in standby continuously means that some components are getting warm and giving off scent too of course. With the hysteria over energy conservation of course,all equipment nowaday's is very frugal in consumption. Nick
    Posted to The Workbench (Forum) by solderon29 on Tue, Mar 19 2019
  • Re: Beocord 6500: drawer not moving

    Indeed,but have you established that the data route for that function is continuous,as suggested above? The fact that you can't operate play,wind and rewind either,suggest's that the data route for those functions and "open", is missing,or perhaps the processor ic is faulty? Nick
    Posted to Vintage Products (Forum) by solderon29 on Mon, Mar 18 2019
  • Re: Beocord 6500: drawer not moving

    Sorry,yes but you will need a compatible Beomaster eg Beomaster 5500/6500,to operate with remote control,as the commands come via there. Another easy check is with a multimeter to check the continuity of the data route. With the Beocord unpowered,and the meter in a low range resistance mode,put one probe on pin 32 of IC9(one of the two processor ic's on main pcb)and the other probe on pin 21 of the same ic.When you click the "open" button,the meter should read about 1k ohm when the
    Posted to Vintage Products (Forum) by solderon29 on Sun, Mar 17 2019
  • Re: Beocord 6500: drawer not moving

    Are you able to "get technical"?Do you have a logic probe or oscilloscope?It's most significant that the data for all the functions (inc "open") you mentioned is not getting through to the processor? You may have a faulty processor,but it's unusual. You should see activity via a 'scope or logic probe on pins 21,22,23,and 24 when you operate the keyboard.(pin 21 being the crucial route for the functions you mention that don't work of course) Are you able to connect
    Posted to Vintage Products (Forum) by solderon29 on Sat, Mar 16 2019
  • Re: Beocord 6500: drawer not moving

    Ah,that's significant!!! Those functions all share the same data route from the keyboard to the processor. Check the soldering on the connector P13 on the main pcb. Nick
    Posted to Vintage Products (Forum) by solderon29 on Fri, Mar 15 2019
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