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

 

Latest post 04-19-2008 6:48 PM by stevequinn. 2 replies.
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  • 04-19-2008 7:54 AM

    • stevequinn
    • Not Ranked
    • Joined on 01-08-2008
    • Alice Springs, Northern Territory, Australia
    • Posts 29
    • Silver Member

    Penta III display probs

    Reply Contact

    Hi, more Penta issues to share beyond my Beolab amp probelm which turned uot to be a diode...

    http://forum.beoworld.org/forums/thread/105509.aspx

    Now one display has stopped working and I have isolated it to PCB22, the one which sits sandwiched with the main amp board PCB1 and has the smaller board with the line in sockets attached to it.

    Has anyone had issues with this board before relating to the display, and fixed it?

    Cheers, Steve

  • 04-19-2008 11:40 AM In reply to

    Re: Penta III display probs

    Reply Contact
    Yes. Dead capacitor (the 470uf) with a shortcut killed the 4.7 Ohm resistor in the display. 

  • 04-19-2008 6:48 PM In reply to

    • stevequinn
    • Not Ranked
    • Joined on 01-08-2008
    • Alice Springs, Northern Territory, Australia
    • Posts 29
    • Silver Member

    Re: Penta III display probs

    Reply Contact

    Thanks for your answer, but I am confused - according to my diagram and component lists, there is no 470uF cap on PCB 22...

    The display boards themselves work fine with the 'good' amp unit connected.  I swapped PCB 22 in the amps and it certainly seems to be an issue with that board.  It is the one with all surface-mount components and sits in a steel bracket back-to-back with the main Amp board PCB 1, connected to it with red and black wires...
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