• Lenovo Ideapad 100s-14ibr - brak obrazu

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  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
  2. Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
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#1 Lenovo Ideapad 100s-14ibr - brak obrazu


by buszu97 12 March 2019, 13:51
Witam,
Mam problem z Lenovo Ideapad 100s-14ibr (płyta 1501B_01_01 REV: SOVP2). Nie wyświetla się obraz, płyta po włączeniu (bateria odpięta) pobiera 0.18A, lecz obrazu brak. Wcześniej przed wykonaniem reflow pobierała 0.02, więc coś pomogło. Na co jeszcze zwrócić uwagę?

Re: Lenovo Ideapad 100s-14ibr - brak obrazu


by Google Adsense [BOT] 12 March 2019, 13:51

#3 Re: Lenovo Ideapad 100s-14ibr - brak obrazu


by buszu97 12 March 2019, 15:25
Oznaczenie procesora: SR2KN.
Pomiary:
L1201 1.36V
L1002 5.11V
L1001 3.36V
L0911 14.9 mV
L1401 1.00V
L1301 1.00V
L1502 1.82V
L1501 1.07V

#5 Re: Lenovo Ideapad 100s-14ibr - brak obrazu  [SOLVED]


by matic 14 March 2019, 10:45
The author has published the motherboard marking code in the first post:
buszu97 wrote:płyta 1501B_01_01 REV: SOVP2


Measure the resistance to ground on coil L0911.

#6 Re: Lenovo Ideapad 100s-14ibr - brak obrazu


by buszu97 14 March 2019, 15:42
L0911 189 kOhm

#7 Re: Lenovo Ideapad 100s-14ibr - brak obrazu


by matic 14 March 2019, 22:35
Try to reflash the BIOS chip. Don't forget to save the old dump.
If it does not change anything, reflash the KBC chip as well.

#8 Re: Lenovo Ideapad 100s-14ibr - brak obrazu


by buszu97 21 March 2019, 16:53
Laptop został naprawiony, okazało się, że wykonując reflow uszkodzeniu uległy kulki pod pamięcią ram, reballing tej pamięci rozwiązał problem. Temat do zamknięcia, dziękuję za pomoc.

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