As the title suggests the handset will turn on for 2 seconds and then turns off.


The motherboard is: 509404-001, and DAUT1AMB6D0 Rev D.

I have the following diagram,
DV7_-_QUANTA_UT12_DISCRETE_-_REV_1A

I do not know if it fits.

Thanks

Check PQ41.

PQ41 ---> 0V on all pins

Необходимые условия для старта платы выполняются?
What resistance on Drain, Source, Gate to GND?

Which part should I check? How do I start to find the fault

thank you

Ciber SLasH wrote
0. When the main BIOS and EC-bios 100% working.
1. When a voltage is cartoon that it is working and quartz cartoon bios proofread (see communication on flash BIOS oscilloscope).
2. When ACIN = 3.3V
3. When LID_SW # = 3.3V
4. When cartoon remove reset from the south, that is, EC_RSMRST # = 3.3V
5. When you press the alarm signal ON / OFFBTN # drops to zero and the same signal is broadcast in PBTN_OUT #
6. When the signals from the south and PM_SLP_S3 # SLP_S5 # are reset, ie voltage on them will be 3.3V.
Under these conditions the cartoon is to give the command to start.

Check - i.e. replace this part.

I replace the PQ41, now flash the power jack

Before replacing pq41 the power jack not flash?
Check pq41 soldering and what replaced it the same or analogue?

replaced it the analogue

what transistor do you install? check the 1-st pin and MOS type

replaced with AO4430

You need install the transistor with Rds less than 0.0135 OHm @ VGS = 10 V

Hello,

I have a motherboard parts for parts, not working Hp pavilion dv6500 with the code: DA0AT3MB8F0 REV: F.
Please help me find a part to replace the Pq41.

thank you very much

Usually I take transistor from CPU core power circits.