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ARCHIVED FORUM -- April 2007 to March 2012
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This is the first Archived Forum which was active between 17th April 2007 and 1st March February 2012

 

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  • Re: Beomaster 6000 Refurbish

    I couldn't wait to check the signals on a scope so I did a quick measurement over lunch. Here is a picture of what my oscilloscope caught monitoring the micro-computer - IC4 on the 02 Module. The red trace is the probe connected to pin 40 (Vp) and the yellow trace is the probe connected to pin 39 (reset). Should there be more of a delay when the
    Posted to The Workbench (Forum) by sonavor on 01-13-2012
  • Re: Beomaster 6000 Refurbish

    On the antistatic precautions - I didn't wear a ground strap on my wrist to my anti-static mat. However, I did make sure I touched chassis ground before touching the board. The only components I removed on the board were the IC8 and two electrolytic caps. I double-checked the caps first thing and they are in with the correct polarity. I haven't
    Posted to The Workbench (Forum) by sonavor on 01-13-2012
  • Re: Beomaster 6000 Refurbish

    When I get back to it this afternoon I plan to monitor the reset line with an oscilloscope so I can see activity on that signal. I did first check the voltage from pin 40 V+ and pin 20 gnd. It was also 4.9vdc. After that I checked the reset line...but only with a DVM to see what the current state was. Dillen also mentioned the trimmer involved with
    Posted to The Workbench (Forum) by sonavor on 01-13-2012
  • Re: Beomaster 6000 Refurbish

    Thanks for the encouragement. The information in the links look promising. I will have to dig into the potentiometer and check all of those connector solder joints later today. I did check the voltage on the reset line and it is measuring 4.9vdc. -Sonavor
    Posted to The Workbench (Forum) by sonavor on 01-13-2012
  • Re: Beomaster 6000 Refurbish

    With the recap and selected component replacements done I reattached boards to the chassis and reconnected all of the connector plugs. I first applied power through the variac and dim bulb tester just to be safe. I heard the relay click as I dialed the voltage to 120VAC. The bulb stayed dim in the dim bulb tester so that was good. No smoke or fire.
    Posted to The Workbench (Forum) by sonavor on 01-13-2012
  • Re: Beogram CDX disc loading problem

    That makes sense about this problem. The symptoms definately point to an alignment problem somewhere. After I finish up with my Beomaster 6000 refurbishment I will have to put the CDX back on the bench. Thanks for the heads up on the task ahead. -Sonavor
    Posted to The Workbench (Forum) by sonavor on 01-12-2012
  • Re: Beogram CDX disc loading problem

    I remember that adjustment. I'll check it again. Thanks
    Posted to The Workbench (Forum) by sonavor on 01-12-2012
  • Beogram CDX disc loading problem

    I recently applied Medogsfat's hinge fix to a CDX I aquired. During the CDX hinge repair I also had to adjust the button pads that control the player to fix some of the buttons not working. I got all of that working and have been using the CDX for a few weeks. It has been working well. In the last couple of days though, it started having trouble
    Posted to The Workbench (Forum) by sonavor on 01-12-2012
  • Re: Beomaster 6000 Refurbish

    The 03 Module recapped and re-installed to the chassis. The 03 board does not attach to the chassis with any screws. It has slots in the board that fit into tabs on the chassis. The picture shows the tab that locks the 03 board to the chassis - preventing it from sliding. That is the tab on 03 removal that the board has to be moved away from (to allow
    Posted to The Workbench (Forum) by sonavor on 01-12-2012
  • Re: Beomaster 6000 Refurbish

    Down to the last twelve electrolytic caps to replace - all on the 03 Module.
    Posted to The Workbench (Forum) by sonavor on 01-12-2012
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