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What kinds of components are SG9901 and SG9902 parts in power supply?

Hello,
what function do these elements have.
I thought, that these were shorted diodes and extracted them from the power-supply-board of my philips lcd tv.
But then I noticed that there are 2 arrows in BOTH directions painted on the board.
What does that mean and where can I buye new ones? I don't find them on ebay.
And how do I know in which direction I have to put them onto the board?
Many thanks for answers!
Heinz

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Jaca
Jaca picture
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Hi!
Is it Philips TPN16.2E LA power supply?
https://pdfcoffee.com/power-supply-led-driver-715g7734-tv-led-philips-tp...

If L9901 inserted the board, then sg9901 and SG9902 not needed. Without L9901 noise filter, this two point must be shorted with wire.

https://ibb.co/gPxHmLm

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Heinz
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Hello and thanks.
It is this board:  715G5309-P0A-W21-0020
Philips LCD TV Model 24PFL3507H/12

I changed 2 capacitors, put power on and saw one of the sg9901 or sg9902 flashed, I thought they were diodes and they were the reason, why my tv was not starting any more.
 

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