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Philips PM3262 Oscope Failure Help needed

Discussion in 'Electronic Repair' started by Al, Apr 8, 2007.

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  1. Al

    Al Guest

    I picked up a Philips PM3262 Oscope at my town's recycling center. it
    looks like it has been well used.

    I plugged it in and turned it on. It worked normally for about 2 minutes
    and then shut down. The ckt breaker on it did not pop. The "ON" light
    was off. After I let it sit for a while, this repeated.

    I don't have schematics and when I took the covers off I did not see
    anything obviously out of kilter.

    Has anyone had this problem and fixed it easily? If so, could you post
    the fix?

    Thanks in advance.

    Al
     
  2. mike

    mike Guest

    Had a similar problem with a Philips PM scope.
    Turned out to be the high voltage transformer shorted a turn
    after it warmed up. I rewound the thing...yeah, that was an ordeal.
    Worked for a few days and shorted out again.
    mike
     
  3. Roger_Nickel

    Roger_Nickel Guest

    Had one of these as a bench 'scope back in the day. Most of the internal
    voltages come from a switch mode power supply which will fail as you
    describe at the slightest provocation. Tough to fix without circuit
    diagrams and you will need a 'scope that works.....
     
  4. Al

    Al Guest

    From the responses I've gotten, it's best for me to take it back ;-)

    Al
     
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