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  • Tektronix 2335 Fault

    From William van Niekerk@21:1/5 to All on Sun Nov 12 22:18:59 2023
    My 2335 has been reliable for so many years and has now become faulty. The horizontal trace will only extend to about halfway of the scale and then folds backon itself. I have checked all the voltages on circuit board A12 and they are all good. I would
    appreciate any tips on how to diagnose this fault.

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  • From legg@21:1/5 to [email protected] on Mon Nov 13 09:05:35 2023
    On Sun, 12 Nov 2023 22:18:59 -0800 (PST), William van Niekerk <[email protected]> wrote:

    My 2335 has been reliable for so many years and has now become faulty. The horizontal trace will only extend to about halfway of the scale and then folds backon itself. I have checked all the voltages on circuit board A12 and they are all good. I would
    appreciate any tips on how to diagnose this fault.

    Start with:

    https://groups.io/g/TekScopes

    Horizontal deflection is usually pretty simple circuitry.

    Could be drive transistors going flakey.

    RL

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