Benq Zowie XL2540K / Power board failure / 6Pin-SOP-Chip identification

[alexinquest]

link above not working

[kasfamily]

Can you tell me which website you used to filter for those components?

Hello, you need to register
https://**************/forum/78-3771-1

[seppde]

Can you tell me which website you used to filter for those components?

[seppde]

I'll see if I can get it under a microscope.
Thanks for that table, that looks as though there aren't that many options actually and probably one out off all those might do the trick.

[kasfamily]

///

[lotas]

If you see any markings on it, gently wipe it with alcohol or acetone with an ear swab to wash off the varnish coating and look under a magnifying glass at what is written on it.

[seppde]

Hello everyone,
I've got a Benq power board of a XL2540K monitor which suffered from a power cut and is since defective / won't turn on. It's got obvious defects, some blown resistors, some burning around the drain pin of a MOSFET...
... and some 6-pin IC I struggle identifying, that is driving said MOSFET.
The IC is labeled as IC601, so someone with a circuit schematic could probably identify it really quick, unfortunately I can't find the schematics.
In other power boards of Benq for which I did find the schematics, IC601 is an 8-pin NCP1200 PWM controller - I suppose the function of this 6 pin chip is the same.
See the photos attached.

Pin 1 - idk, i suppose GND
Pin 2 - connected via optocoppler to low-voltage/DC side
Pin 3 - seems to be connected to GND via resistor
Pin 4 - connected via resistor to Drain of MOSFET
Pin 5 - idk, maybe VDD - i can't really see a direct connection to the plus of the rectifier
Pin 6 - connected to the gate of the MOSFET

Could it be an OB2263?

Thanks for any help,
kindly,
Sepp