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Needs a new conversion chip - Televison & Video

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Look for STK on chip next to heat sink on board in the rear of the tv.
should be 2 of them

Posted on Sep 03, 2010

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Where the conversion chip located on the 5 jcv tv.


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this is the conversion chip and vertical deflection chip that need to be replaced
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Oct 16, 2008 | Televison & Video

1 Answer

My convergence is off on my 55 in toshiba projection screen


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My problem is the tv will not power up. The red light just keeps blinking and power on will not work. It ran for 30 seconds three different times and quit each time. It is a Sharp LC-19SB14U.


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1 Answer

A faint thin, line across my toshiba 32 inch. It was built in 1989, but I don't have idea what model it is. I replaced a few caps around the verticle IC, and the IC itself. I still get the same thing,...


the conversion chip is powered by seperate power from the transfomer + -- volts
here is I believe what your conversion chip # is stk392-110t and here is the NTE specs.
http://www.nteinc.com/specs/7100to7199/pdf/nte7178_81.pdf
you can use the specs. to check voltage pins, ect.. ,if that is the numbers.
to see if the chip is faulty then check resistors, caps , and voltage to the chip , a pr or fuse may have blown for the - and + voltage to the chip. if it is bad it would be wise to replace the vertical deflection chip as well ( hopefully yours is still ok) , because of the vertical control in the conversion chip.
you can also check for the power on the wires from the CRT board that comes from the flyback transformer ( NOT the HIGH VOLTAGE wire ).
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JVC AV-48WP34


If you are in the service mode, pressing the muting button saves the convergence values to memory.

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