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I have a power supply of an Epson EB-X41 projector that doesn't turn on. I haven't found the problem yet, but in the power supply circuit it has 2 ICs for which I couldn't find any datasheet or information. I think they should be switching ICs, but it's so strange for me why there is no data about them.

What are these ICs? do they have datasheets available?

photo of unknown IC enter image description here enter image description here

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    \$\begingroup\$ The logo is reminiscent of Cypress semiconductor. Usually when projectors refuses to turn on its because of lamp slot interlock or the ballast does not give power ok. Check those first. \$\endgroup\$
    – winny
    Feb 15, 2021 at 19:52
  • \$\begingroup\$ ok, thanks, but i think in those cases the leds power on with green or red or ... colors and power off again, but my projector doesn't react at all \$\endgroup\$
    – esinior
    Feb 25, 2021 at 10:56
  • \$\begingroup\$ Which supply rails does come up and which doesn’t? \$\endgroup\$
    – winny
    Feb 25, 2021 at 11:24

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As the allaboutcircuits reply said, the first could be 8A01 rectifiers, but IC version.

The one remaining could be an FA5612 power supply control IC.


I searched 5612 ic datasheet.

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  • \$\begingroup\$ are u serious? 8a01 is an axial 2 pin device and my parts are 8 pin ic \$\endgroup\$
    – esinior
    Feb 25, 2021 at 15:58
  • \$\begingroup\$ 8A01 IC - could be four in the IC. Just look up 8A01 in an eight pin package. \$\endgroup\$
    – adamaero
    Feb 25, 2021 at 16:16
  • \$\begingroup\$ i didn't see 8-pin package in sent datasheet \$\endgroup\$
    – esinior
    Feb 25, 2021 at 16:35
  • \$\begingroup\$ Changed answer to, "could be 8A01 rectifiers, but IC version." \$\endgroup\$
    – adamaero
    Feb 25, 2021 at 16:51

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