Faulty Philips PSU (715g5246-p01-000-002s )

[mr2013e]

Re: Faulty Philips PSU (715g5246-p01-000-002s )

check R9332

[mr2013e]

Re: Faulty Philips PSU (715g5246-p01-000-002s )

ic9101 for 12/24v power supply and ic9801 for power factor corrections(PFC)

[Mr_K]

Re: Faulty Philips PSU (715g5246-p01-000-002s )

Thank you mr20123e!

R9332 is fine. It´s 2.4Ohms

My intention with adding external 5.2V: To test the rest of the PSU....

[mr2013e]

Re: Faulty Philips PSU (715g5246-p01-000-002s )

then swap psu.

[Mr_K]

Re: Faulty Philips PSU (715g5246-p01-000-002s )

then swap psu.

This one is realy realy hard to find. Especialy with the exact same config as mine. The model number is always the same, but there are different (more) components and false plugs on the board.

[nagp678@gmail.com]

Re: Faulty Philips PSU (715g5246-p01-000-002s )

12v & 24v is not working

[angel-boy]

Re: Faulty Philips PSU (715g5246-p01-000-002s )

have a problem with this board,

- i dont have light on display

- i have 24v.
- dim - 3.3v
- on/off - 3.3v

i see that conector goes in display

[angel-boy]

Re: Faulty Philips PSU (715g5246-p01-000-002s )

fix, change one led and now it`s working

[Kalias]

Re: Faulty Philips PSU (715g5246-p01-000-002s )

Hi, have you succeeded in repairing of the board? I have the same issue, spent lot of time trying to diagnose the fault, but with no success.

[mr.greywater]

Re: Faulty Philips PSU (715g5246-p01-000-002s )

I know this is an old thread, but I just want to comment that I'm pretty sure this board is designed to output 3.3V instead of 5.2V. Why? Because if you calculate the output voltage from the reference voltage, you arrive at 3.26V.

This formula comes from the datasheet of IC9304 to calculate Vout:
(R9337/R9338+1)*Vref=
(12.7KOHM/7.87KOHM+1)*1.25V=3.26V
Therefore the voltage is regulated to be ~3.26V

I think originally there was intended to be the mosfet Q9301 which switched the path between PIN1 of IC9304 to ground to a path with less resistance, thus increasing the output to 5.2V. They probably decided they don't need 5.2V at all, marked those components as NC, but left the labels of the rail as 5.2V, as they could output it depending on the version of the power supply.