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E5440 (la-9832p) AC Adapter Unkown https://vlab.su/viewtopic.php?f=41&t=122667 |
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R EZ A [ 22 янв 2022, 20:36 ] | |
Заголовок сообщения: | E5440 (la-9832p) AC Adapter Unkown |
Hello all i got a dell laptop with board number la-9832p_Rev1.0 for repair . when I connect the AC adapter it gives me an AC adapter unknown error on the bios menu. when I opened it PU1 was burned which I changed with a new one but I got still the same error. pr8, pr9 have correct ohms but I changed them with new ones. I changed pq2 too but I got the same error again. pl3 is checked and is correct too any idea where could be the problem and I should check where? |
Serguz05 [ 22 янв 2022, 21:39 ] | |
Заголовок сообщения: | Re: E5440 (intel) AC Adapter Unkown |
NB_PSID ( PS_ID ) to multicontroller. (1-wire signal from AC adapter dell). ---------- Добавлено спустя 15 минут 32 секунды: ---------- R EZ A писал(а): PU1 was burned Might have to change the multicontroller. PS_ID what resistance . check, replace PQ2, PQ3. |
R EZ A [ 25 янв 2022, 20:41 ] | |
Заголовок сообщения: | Re: E5440 (la-9832p) AC Adapter Unkown |
I changed PQ2 , PQ3 but still got an adapter unknown error. I even shorted pin 3-4 of pu1 and d-s pq2 but nothing happened |
R EZ A [ 27 янв 2022, 19:45 ] | |
Заголовок сообщения: | Re: E5440 (la-9832p) AC Adapter Unkown |
any idea ? |
Serguz05 [ 27 янв 2022, 23:18 ] | |
Заголовок сообщения: | Re: E5440 (la-9832p) AC Adapter Unkown |
Is the power supply original? post measurements PQ2, PQ3, PD5, PU1, check resistors, check +5V_ALW, +3.3V_ALW, ECE5048-LZY flashable multicontroller. possibly an error. but it has a locked BOOT area in which battery data is stored. it's not that easy . попробуй другой оригинальный блок питания. ---------- Добавлено спустя 2 минуты 16 секунд: ---------- Serguz05 писал(а): попробуй другой оригинальный блок питания. sorry - try another original power supply. |
Vasyasneg [ 29 янв 2022, 21:55 ] | |
Заголовок сообщения: | Re: E5440 (la-9832p) AC Adapter Unkown |
R EZ A писал(а): when I opened it PU1 was burned which I changed with a new one This new one PU1 was with firmware, or with empty content? |
Serguz05 [ 30 янв 2022, 00:30 ] | |
Заголовок сообщения: | Re: E5440 (la-9832p) AC Adapter Unkown |
Vasyasneg писал(а): This new one PU1 was with firmware, or with empty content? with what firmware ? PU1 TS5A63157 https://www.ti.com/lit/ds/symlink/ts5a6 ... le.ru%252F |
Vasyasneg [ 30 янв 2022, 11:18 ] | |
Заголовок сообщения: | Re: E5440 (la-9832p) AC Adapter Unkown |
Sorry, I thought the speech was about the Dallas chip. |
Vesko356 [ 31 янв 2022, 19:01 ] | |
Заголовок сообщения: | Re: E5440 (la-9832p) AC Adapter Unkown |
Are you sure you've soldered PU1 correctly (I mean not upside down). What is the voltage on pin 3 and pin 4 of PU1 (and resistance to ground in NB_PSID and PS_ID lines in turned off state)? You can try to unsolder PU1 and then short pin 3 to pin 4 to see if it's working this way. Did you check PD5 (if it's present on the board)? |
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