good morning friends of the forum. This laptop enters the laboratory with the defect that it does not turn on, no leds. Connecting it to the bench power supply I don't read any absorption. There are no traces of oxidation. In the battery connector there are no 3.3v of the sda scl lines for charging. I tried to reprogram the bios with several dumps found on the net and with the reprogramming of the bios I have a small absorption of 0.01A and 3.3V now appears on the battery connector (SDA SCL for charging)
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- Topic title should contain: the device's manufacturer, full model and the brief description of problem.
- 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.
- Before posting a new topic please read all topics in TRAININGS subforum and make a preliminary diagnostic based on the content of those trainings.
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Re: Asus F555L (no led, no power on) Main X555LD Rev 3.3
by Google Adsense [BOT] • 22 October 2020, 12:50
i can't find a kbc dump for revision 3.3
*** update ***
I tried in every way to read the kbc rom but svod always gave me the error Ite is busy. Usually these kbc in the asus are programmed automatically if they are new and after the first power on, I soldered a new kbc, I left the main board powered for 10 minutes and trying to give the power on nothing happened, I did the measurement again on the pin 56 where I find 3.24V but if I give the power on it always remains fixed at 3.24V
*** update ***
I tried in every way to read the kbc rom but svod always gave me the error Ite is busy. Usually these kbc in the asus are programmed automatically if they are new and after the first power on, I soldered a new kbc, I left the main board powered for 10 minutes and trying to give the power on nothing happened, I did the measurement again on the pin 56 where I find 3.24V but if I give the power on it always remains fixed at 3.24V
Re: Asus F555L (no led, no power on) Main X555LD Rev 3.3
by Google Adsense [BOT] • 22 October 2020, 23:35
This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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