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Tektronix 492P gone brain dead

Discussion in 'Troubleshooting and Repair' started by W2KV, Nov 9, 2014.

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  1. W2KV


    Nov 9, 2014
    I have a Tektronix 492P spectrum analyzer which I have had for at least ten years. It was working fine until I put it in storage where it sat for about a year. When I recently turned it on, all the buttons light up, no text appears on the screen and the usual startup clicking is not heard. The screen shows a single slow moving dot going from left to right. Pushing any of the front panel buttons has no effect. All of the power supply voltages are present and correct. The row of LEDs across the top edge of the "processor" board are all blinking furiously. Does anyone know how the operating system is stored in these units? RAM? A dead memory battery?
  2. davenn

    davenn Moderator

    Sep 5, 2009
    Hi David
    welcome to EP :)

    If no one else comes up with a quick solution, I suggest you joining the tekscopes group on yahoo groups
    I have seen the 492 come up in questions a number of times over the years

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