Re: Need help to find IC
Hi, the Mosfet is ok.
I will check the voltage tomorrow.
Which check with 3R3 i had to do?...
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Re: Need help to find IC
Hi, what do you mean with check the 3R3?
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Re: Need help to find IC
The SG5851 is obsolete so is there another alternative?
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Re: Need help to find IC
Thanks very much for the reply.
I can't find a datasheet of LTA703S and where to buy.
Does exist an alternative?
Thanks again
P.S. Yes the caps are OK
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Re: Need help to find IC
Thanks for your reply. Here is attached the PS model....
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Re: Need help to find IC
Under different light i see this code:
TA703S
TKHAE
SYB
but nothing on internet correspond to this code
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Re: Need help to find IC
Checking the connection and searching on internet i found that the ic is probably an On-Bright electronics product. At the moment i know only that pin1 is GND
[url]http://www.on-bright.com/cn/english/index.htm[/url]
On-bright produce many SMPS IC controller so it's not easy to find the right oneRe: Need help to find IC<br /> <br ...ndex.htm[/url]
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Re: Need help to find IC
With good probability the ic is a TEA1733 from NXP. In the App note AN10868 the output diode and n-ch mosfet have the same part number of the my power supply.
Unfortunately i can't find any reference on how this IC is marked on top side
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Re: Need help to find IC
The 2nd line is something like "NAE" and last line is "SYB".
I will check the connection later. This is the only IC in the board.
Like any other classic flyback there are an n-ch mosfet (tested and ok), output diode (tested ok), diode bridge (tested and ok), bulk capacitor (after the bridge) and an optocoupler (tested and ok).
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Re: Need help to find IC
This is the best pictures i have. It's very difficult to capture a better pics. I thinks the code is like TA703S
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Need help to find IC
Hi, i nedd to find the IC in the picture attached. Come from a Notebook powersupply (Lite on power supply). The PS is a classical Flyback converter. This IC i think is the controller.
Thanks...
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Re: New Members - please post your introductions here
Very useful forum. Thanks
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