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Panasonic CT-27624CA TV chassis AP 335

My screen goes black and then returns to regular picture, goes black and so on. The voice is ok all the time. Appreciate for any help.

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Re: Panasonic CT-27624CA TV chassis AP 335

I have la7848 blasted now ic is not available in markeet pls send me its slotion.

Posted on Aug 29, 2009

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Re: Panasonic CT-27624CA TV chassis AP 335

You have problems with Ic vertical la7848 you need resoldering or change

Posted on Sep 12, 2008

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it sounds that have problem in the chroma board ( video board ) a small board that hooked up in the neck of the picture tube. if the color is greenish the cause is dead in red video driver transistor or open resistance. hope this can help good luck.

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27" (diagonal screen) Panasonic regular crt TV few years old, no serial # on front and too heavy for me to look at back. Picture comes on great, then a grey (NOT BLACK) screen covers 99% of screen with a...

It will be good to check the capacitor on the +B voltage that goes to the power section in the main board. A filter capacitor of about 47mF/160 V can be defective.
Next check the capacitor on the HT line to the grid-22mf/250V replace.
If possible loop on capacitors in the horizontal section particulary the IC.
Now the tip I can offer:
If the fault occurs on heating shcek out htis area to confirm and isolate the component.
But finally I understand that when you press any key the picture is good.If so check the memory IC/cmos IC in this section for logic control, it might be having a switching fault, a conflict or the video noise is coming on in default but goes off in the data selection mode. Do a soldering around this section on the IC , capacitor and see if the fault goes off or becomes irregular when this section is heated, if so there is a semiconductor producing this noise error .
So start from the begining so that we have a clean voltage inside.
I hope my advice helps.

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1 Answer


Maybe the vertical IC output are damaged you need to replace him

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First, the blinking light is a code, how many blinks? Second, regulators are not resettable. Don

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