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Benq Zowie XL2540K / Power board failure / 6Pin-SOP-Chip identification
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...2 Photos
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On further investigation, I've found the USB-PD chip (CYPD5125) getting warm and the whole circuit drawing about 0,14A at 5V. (tested with USB-C Tester)
Datasheet of the Cypress PD-Chip: [URL]https://cdn.badcaps-static.com/pdfs/fca69393bf6a0852fc8c5b7761ccdb14.pdf[/URL]
Between Pin 31 (VDDD) and GND I measure 0,9V - according to the datasheet, that should be around 3,3V, usually, when the CYPD5125 is powered via VBUS (on VBUS I measure the 5V USB voltage)
Also, between VDDD and GND there's 6,3Ohm up to ~7,6Ohm and that's temperature dependent - the colder the chip, the...
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HP Elite x2 1013 G3 - da0d99mbai0
Hello guys,
I'm looking for the motherboard schematic of the HP model
HP Elite x2 1013 G3
The board number should be : da0d99mbai0
It seems impossible to find on the internet.
I'm trying to repair this convertible of my brother which does not turn on anymore and doesn't show any LED lights when the charging cable is inserted.
I've measured 5V (of USB-PD) at the first PMOS which comes after the USB-ports - nothing else so far, no blown components.
If anyone can help with the schematic or boardview it will be appreciated.
Greets...
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Re: YOGA 910 NM-A901 Schematic Request
Hello everyone,
I hope I act in order with the guidelines here
I'm looking for the schematic of the right IO Panel of the Yoga 910 with the part number being [B]NS-A902[/B] for the following reason:
I've got a defective Yoga 910 which I purchased cheaply and which supposedly only had a defective audio and USB-A Port. The Laptop internally is split in a left IO-Board with the charging connector, the mainboard itself and the right IO-Board with the USB-A Port and the Audio Plug.
I figured...
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Re: New Members - please post your introductions here
Hello everyone,
My name is Sepp and I am studying electronical engineering at the technical university of Dresden in Germany.
As long as errors on circuits boards are visible I usually have no problem fixing something myself and it's a joy always to see a device working again afterwards.
Programming-wise I got experience with C++ and Python and programmed a few GUI-based programs using Qt with either language. I kind of skipped the arduino and raspberry hype, own projects are often done with STM32 because...
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