Ремонт: Ноутбуков, Компьютеров
https://vlab.su/

Inspiron 3721 (LA-9401P) 7 beeps after CPU replacement
https://vlab.su/viewtopic.php?f=41&t=61689
Страница 1 из 1

f-bone [ 24 май 2017, 15:15 ]
Заголовок сообщения:  Inspiron 3721 (LA-9401P) 7 beeps after CPU replacement

Hi guys,

I replaced the CPU on this one - was shorted before and now I get 7 beeps.

The FAN starts, the LED is on but no CPU power. CPU resistance at 3ohms. I lifted PL701 to inject 1V but maximum current drain is 1.75A without anything getting hot.

I re-flashed ALL BIOSes including KB9012 but same result. Vron is present at ISL95833 at 3.3V.

There is not discrete VGA, only a Pentium CPU (SR0VQ) and SLJ8E.

Could it be the SLJ8E?

Thank you in advance!

br,
george

gevorg-x [ 24 май 2017, 15:35 ]
Заголовок сообщения:  Re: Inspiron 3721 (LA-9401P) 7 beeps after CPU replacement

Flash the BIOS first...

f-bone [ 25 май 2017, 19:37 ]
Заголовок сообщения:  Re: Inspiron 3721 (LA-9401P) 7 beeps after CPU replacement

I have flashed BIOSes and IO firmware..

gevorg-x [ 25 май 2017, 20:48 ]
Заголовок сообщения:  Re: Inspiron 3721 (LA-9401P) 7 beeps after CPU replacement

I think the processor is probably not properly soldered...

Lex66 [ 25 май 2017, 22:45 ]
Заголовок сообщения:  Re: Inspiron 3721 (LA-9401P) 7 beeps after CPU replacement

May be POST-card show your problem?

f-bone [ 26 май 2017, 12:16 ]
Заголовок сообщения:  Re: Inspiron 3721 (LA-9401P) 7 beeps after CPU replacement

I will try to resolder the CPU ...also Lex66, I have a POST-card but I never used it yet - I must understand how first. It arrived only last week from supplier.

Lex66 [ 26 май 2017, 21:56 ]
Заголовок сообщения:  Re: Inspiron 3721 (LA-9401P) 7 beeps after CPU replacement

With post-card you will see post-code of error, and it can help...

Страница 1 из 1 Часовой пояс: UTC + 4 часа
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/