HELP repair oscilloscope hp1725A

Discussion in 'General Electronics Chat' started by mimmo2005, Dec 4, 2010.

  1. mimmo2005

    Thread Starter New Member

    Dec 5, 2005
    Ok repair low voltage power supply, but
    moving the vertical position of the potentiometer track and off-center shifts of 2 cm. The display is a maximum of about a major division (about 1 cm), both channels are the same. The rest looks good. I schematic. tensions are OK. Tension is high as -3,000 said. I can trace the signal through the amp vertical and is approximately 2 times the size in a different area. I can find the same signal on the next card that is connected by a coil large screen.
    and it is possible that the IC hibrid 5081-3024? how can I do to make sure the fault I found the resistance 31.6 ohms hot unsolder the circuit still measure 32.8 ohms.
    Any ideas or help would be welcome.
    Trascrizione fonetica

    Last edited by a moderator: Dec 4, 2010