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Sanyo crt tv model cp21fs2 standby ok instant on then reverts to stand by

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  • jonvon Jul 19, 2008

    replaced all but chopper tx in power supply no difference

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You need some experience for troublleshooting it.
Capacitors are probably the cause of most faults, even when you get a lineoutput transistor (LOPTR) gone , the probable cause was a capacitor.
They often fail with no external signs showing, but if the black plastic sleeving is shrinking away from the top, or the sides are wrinkled, then they are getting HOT, either by internal heat generation or by something nearby getting hot.
another sign is that the top silver surface is swelling , caused by gas generated inside, often due to over voltage (check ht level)

Posted on Jul 19, 2008

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Check the power board module for any damaged components

Posted on Jul 19, 2008

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