Hello, I have already changed the RAM but the problem continues, it does not give an image to the screen.
The sound is 2 short beeps (sb) with 3 seconds, it does it like this:
2 (sb) - 3 sec - 2 (sb) - 3 sec - 2 (sb) - 3 sec - 2 (sb) - 3 sec - 2 (sb)
After this it does not beep anymore. The Caps Lock light stays on with 2 short blinks every 3 seconds, it does this indefinitely, the fan also stays on only until I remove the power from the power supply.
I tested what happens if I turn it on without RAM, the beep is 3 short times.
I also tested putting in a new CR2032...

Hi, thank you very much for your reply, the error was pq13, I replaced it and now it charges.
But now I have the beep problem, it gives me 2 short beeps in 5 series, can you tell me what is the cause?
I did some research but I can't find any information.
Thank you for your help.​

Hello everyone. I have a problem with an HP laptop, when connecting the charger the amber light comes on for 6 seconds, changes to white and does not charge, I have checked all the components with the multimeter and the values seem correct, I was guided by the diagram, I do not know if it is a problem with the BQ24728H charge controller, investigating it seems that the voltages given by the charge controller are correct, I made the measurements connected to the power source and without the battery:
- ACN (BQACN) 19.6v
- ACP (BQACP) 19.6v
- CMSRC (BQCMSRC) 19.6v
- ACDRV...

Hola, soy alguien apasionado con las reparaciones (love repair)