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| Hp dv7-2205EL turns on and turns off immediately https://vlab.su/viewtopic.php?f=53&t=8928 |
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| roby123 [ 30 сен 2012, 13:53 ] | |
| Заголовок сообщения: | Hp dv7-2205EL turns on and turns off immediately |
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 |
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| Ciber SLasH [ 30 сен 2012, 14:05 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
Check PQ41. |
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| roby123 [ 30 сен 2012, 15:14 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
PQ41 ---> 0V on all pins |
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| Ciber SLasH [ 30 сен 2012, 15:44 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
Необходимые условия для старта платы выполняются? What resistance on Drain, Source, Gate to GND? |
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| roby123 [ 30 сен 2012, 17:01 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
Which part should I check? How do I start to find the fault thank you |
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| bupc1 [ 30 сен 2012, 17:23 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
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. |
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| MSF113 [ 01 окт 2012, 08:40 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
roby123 писал(а): PQ41 ---> 0V on all pins Check - i.e. replace this part. |
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| roby123 [ 01 окт 2012, 13:06 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
I replace the PQ41, now flash the power jack |
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| MSF113 [ 01 окт 2012, 13:18 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
Before replacing pq41 the power jack not flash? Check pq41 soldering and what replaced it the same or analogue? |
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| roby123 [ 01 окт 2012, 14:43 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
replaced it the analogue |
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| MSF113 [ 01 окт 2012, 14:57 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
what transistor do you install? check the 1-st pin and MOS type |
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| roby123 [ 01 окт 2012, 18:22 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
replaced with AO4430 |
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| MSF113 [ 01 окт 2012, 18:26 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
You need install the transistor with Rds less than 0.0135 OHm @ VGS = 10 V |
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| roby123 [ 01 окт 2012, 19:34 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
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 |
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| MSF113 [ 02 окт 2012, 07:46 ] | |
| Заголовок сообщения: | Re: Hp dv7-2205EL turns on and turns off immediately |
Usually I take transistor from CPU core power circits. |
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