hello,mainboard not start.and not amper.
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| a15hc not start https://vlab.su/viewtopic.php?f=251&t=73638 |
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| selmanla2 [ 20 мар 2018, 10:44 ] | |
| Заголовок сообщения: | a15hc not start |
a15hc not start. 3 volts on the button. Bios integrate 3 volts. I made the bios update. |
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| TechMedik [ 20 мар 2018, 16:59 ] | |
| Заголовок сообщения: | Re: a15hc not start |
Good day! Does CPU have any voltages? Does CPU becomes warm when you turn on MB? Does cooler rotates? Please more details. Unfortunately I haven't schematic. I don't understand fully, do you made BIOS update, and then MB don't works, or...? |
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| selmanla2 [ 20 мар 2018, 17:45 ] | |
| Заголовок сообщения: | Re: a15hc not start |
hello,mainboard not start.and not amper. [url] [url] |
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| TechMedik [ 20 мар 2018, 19:14 ] | |
| Заголовок сообщения: | Re: a15hc not start |
Unfortunately I can't find even npce794la0dx datasheet. Also I still haven't full picture of MB actions. Does it haven't reaction for button / starts, but swiches off / restarts? Also important, do you turning it on with CMOS battery (I just noticed that there is emty battery slot on your pictures)? Make sure it is 3 volts. |
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| selmanla2 [ 20 мар 2018, 19:44 ] | |
| Заголовок сообщения: | Re: a15hc not start |
Does it haven't reaction for button.this motherboard is not work and start. |
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| TechMedik [ 20 мар 2018, 20:35 ] | |
| Заголовок сообщения: | Re: a15hc not start |
TechMedik писал(а): I don't understand fully, do you made BIOS update, and then MB don't works, or...? Does MB works fine before BIOS updating? TechMedik писал(а): Also important, do you turning it on with CMOS battery (I just noticed that there is emty battery slot on your pictures)? Be sure it is 3 volts. What about this? Sevgili dostum, İngilizce'de çok iyi değilseniz, sadece google çeviriciyi kullanın. |
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| selmanla2 [ 20 мар 2018, 20:57 ] | |
| Заголовок сообщения: | Re: a15hc not start |
i am sorry.i can use google translate. this motherboard is don't work before update bios.i have got many bios.and my bios is worked.i tested before. |
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| TechMedik [ 20 мар 2018, 21:50 ] | |
| Заголовок сообщения: | Re: a15hc not start |
What is the name of these two ICs what I marked yellow? |
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| selmanla2 [ 21 мар 2018, 11:12 ] | |
| Заголовок сообщения: | Re: a15hc not start |
left is ısl95831 right is conexant cx2067l audio chip but yesterday i changed isl95831 but motherboard was not. |
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| TechMedik [ 21 мар 2018, 14:26 ] | |
| Заголовок сообщения: | Re: a15hc not start |
I found NPCE794LA0DX pinouts from another schematic, please check your email. Firstly check +3VSUS, impulse on PM_PWRBTN# when you press the button, also check PM_RSMRST#, PM_SUSB# and PM_SUSC# voltages. Also check using oscilloscope what generate quartz rezonator and check are there any impulses on the Bios IC. |
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| selmanla2 [ 21 мар 2018, 16:44 ] | |
| Заголовок сообщения: | Re: a15hc not start |
i circuet PM_RSMRST and gnd and my motherboard and work.very very very thanks. |
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| TechMedik [ 21 мар 2018, 17:42 ] | |
| Заголовок сообщения: | Re: a15hc not start |
selmanla2 писал(а): circuet PM_RSMRST and gnd and my motherboard and work Sure that it were PM_RSMRST#? Not PM_PWRBTN#? |
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| selmanla2 [ 21 мар 2018, 19:28 ] | |
| Заголовок сообщения: | Re: a15hc not start |
yes i circuet PM_RSMRST and ground and it is worked. |
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| TechMedik [ 22 мар 2018, 01:09 ] | |
| Заголовок сообщения: | Re: a15hc not start |
Interesting, very interesting. In my imagination PM_RSMRST# should have high-level, it should come from npce795la0dx to HM65 and give HM65 permission to start. If you short it with gnd it must have low level (0 volts). Is everything works fine now? All of the units? |
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