Re: PB (Acer) LA-5891p mainboard not starting

Here you go!...

Re: PB (Acer) LA-5891p mainboard not starting

Ah, think I missed that one. Thought I only got Russian and Chinese sites.

$ 3.32 is no problem at all!

thanks.

Re: PB (Acer) LA-5891p mainboard not starting

@dj_ricoh

Thank you for your reply.

I am not sure you understood my original post correctly. I don't seem to have power supply problems. +3.3VALW and +5VALW are OK as are the supply power for the RTC charge circuit and RTCREF (The output of the regulator for the charge circuit).

I'm having issues with the RTC battery (the small lithium cell) voltage.

The problem is that the RTC voltage is being pulled down by a short of some kind. I suspect there is a problem with the chipset (the large...

Re: PB (Acer) LA-5891p mainboard not starting

@bicalov

Thanks for boardview. The LA-5892 board is quite different from the LA-5891p and unfotunately this bvd is not very useful to me. I'm trying to get a hold of the correct bvd file, but no luck yet.

I have a Packard Bell (Acer) NEW70 LA-5891p mainboard that is not powering up.

I have checked the CMOS battery and it was completely empty. I have removed the battery and found that the charge voltage is only 1 volt.

The +RTCVREF, directly from the regulator (PU14 pin 3), is 3.3V.
The resistance from +RTCVCC (D8 pin 3) to ground is about 180 ohms, obviously not OK.
When cutting the +RTCVCC at D8 pin 3, the charge voltage on the battery returns to normal.

I have checked the board for visible defects or burn marks, but found nothing....

Re: New Members - please post your introductions here

I love this forum! It has helped me a lot!

thanks