Question about Panasonic CT-27HL14 27" TV

7 Answers

Panasonic CT-27HL-14J Chaisis BP416

The power button lights up but no sound or picture. Any suggestions on where to start to look? TV has hardly been used since bought.

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7 Answers

If the power light is on then the power supply must be active. In many cases the line output transistor may have failed but this is usually accompanied with the power supply trying to switch on and the overload protection circuit switching the power supply off again. Try unsoldring the collector of the LO transistor and switch on the tv and see if the tv powers on

Posted on Mar 08, 2007

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Check for leakage or shortout horizontal amplifier i.e transistor supplying the fly back transformer.if u get me the circuit diagram I'll give u the exact component HHK. hhcombe@yahoo.com

Posted on Feb 27, 2007

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I had encounterd different kind of models with a same problem. I could suspend that the problem is fusable resistor or an open diode (signal diode).

Posted on Feb 23, 2007

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Unplug the set for 2 minutes, that resets the registers in the micro ;).

Posted on Feb 21, 2007

  • Harry Hmmm Feb 21, 2007

    Unplug the television for 2 minutes, that will reset the registers in the micro ;).

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I agree with Jomaru. You must not delve inside unless you or a friend are familiar with where mains or high voltage exists. The first place to check is a reservoir capacitor with about 350 Volts DC on it, probably located near where the mains lead comes in. If the voltage is present and no very high pitched whistle can be heard, then the fault is in the line timebase. See other fault reports for more information on this. If the 350 V is absent, there may be a fuse which will blow because one or more rectifier diodes have failed (usually Short Circuit).

Posted on Oct 17, 2006

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You have a few places to check,check the output transistor for a short ,if he went bad it likely opened a fuse or a safety resistor ,You could have a problem in the power supply and only some of the volts supplies are working,there are measurements that need to be done and parts to check with a meter if you are familiar with tv service you have a place to start but if you are not too familiar be safe and call for assistance from a servicer.

Posted on Oct 16, 2006

  • Omar Urrutia
    Omar Urrutia Oct 16, 2006

    Your rating response is important too.

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Do you know how to work on solid state electronics? if not then Im sorry to say you will need to get the assistance of a local tech who is experienced. As these sets are solid state and there are no user servicable parts inside. Good Luck

Posted on Oct 16, 2006

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