Do I have this chip in correct, I don't see a dot on it.
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Re: chip orientation
That ncp1608 is the pfc ic, it likely drives a mosfet that is shorted, What's the board used in? Is this a Sharp power supply board by chance?
If it is, and that R7900 is blown, IC7903 shorted.
As for transistors, they only go in one way, the correct way.Last edited by R_J; 03-13-2019, 09:49 AM.
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Re: chip orientation
Originally posted by R_J View PostThat ncp1608 is the pfc ic, it likely drives a mosfet that is shorted, What's the board used in? Is this a Sharp power supply board by chance?
If it is, and that R7900 is blown, IC7903 shorted.
As for transistors, they only go in one way, the correct way.
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Re: chip orientation
Which ic are you talking about? What mosfet are you refering to?
the ic in post #1 has nothing to do with the ic pictured in post #5
What number are you replacing IC7903 with? IC 7903 is the standby controler ic. It has nothing to do with any mosfets,
The blown resistor in post #3 picture 3 is the fuse resistor for the standby ic IC7903
I replaced 3 transistors they all look correct. They can go in either way right?Last edited by R_J; 03-20-2019, 06:44 PM.
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Re: chip orientation
Ic7903 was replaced and resistor that was blown. Transistors only can mount up one way. I replaced everything in this kit. https://www.shopjimmy.com/sharp-runt...repair-kit.htm
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