Hello everyone

I have LA-H501P model motherboard. 2 pcs. PCH was short-circuited in both products. I change it. The replaced PCH is new. PCH is solid. But my motherboard is not working. When I press the power button, it draws 30 milliamperes of current.

When we look at the power steps, the results are as follows:

+3VLP OK
EC_ON OK
+5VALW OK
ON/OFFBTN# OK
+3VALW OK
+1.05VALW OK
EC_RSMRST# OK
PBTN_OUT# OK

PM_SLP_S4# NO
PM_SLP_S3# NO
SYSON NO


EC replaced and programmed. SOP8 bios programmed. Battery charging OK.

The same problem has happened to a few of my friends. They couldn't find the solution either. Any ideas? What should I do, where should I check?

Thanks.

CesurISLERi
Приветствую.
Выложите ваш оригинальный DUMP.

@Radiolubitel

Dump is here, attached.

Вырежьте чистый дамп из BIOS_Acer_1.33_A_A, скачанного с сайта поддержки Acer, и пробуйте прошить его или любого другого но не ниже версии 1.27:

EC replaced and programmed. SOP8 bios programmed. but not working.

Какой же версией вы прошивали?

CesurISLER
У вас получилось достать из обновления чистый дамп версии 1.27-1.33, и прошить им плату или вам требуется помощь?

Если вы все сделали и плата не запустилась, то можно продолжать ремонт!

Hello Everyone

I solved the problem. A new and unused HM needs to be fitted.

HM, which was removed and installed from another motherboard, does not work on this motherboard. Unfortunately, it is necessary to install a new HM that has never been used.
Do not remove and reball the HM which is working on another motherboard and do not install it on this motherboard.

@Radiolubitel
Thank you for your interest and support.