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MOver2
Beginner
1,929 Views

how to replace the battery of the real-time clock in NUC6CAYH ?

Hi, I want to replace the rtc battery of a NUC6CAYH, but when I open the NUC, I cannot find the battery. Is there a document describing the procedure to replace the rtc?

Thanks in advance.

 

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7 Replies
LeonWaksman
Super User
370 Views

1. The procedure for CMOS battery replacement: https://www.intel.com/content/www/us/en/support/articles/000006787/mini-pcs.html CMOS Battery on the Intel® NUC

2. The battery is located on the board upper side. You need to remove this board from the NUCs case.

Leon

MOver2
Beginner
370 Views

Hey Leon

My problem is: howto remove the board from the chassis ?

I have already removed the hard disk, two screws with which the board is attached,

the vga connector and the little plastic cover(around the HDMI connector etc.) at the back.

I also removed de plastic top chassis cover.

Then I can move the board a bit, but I can not remove it yet.

What else do I have to remove or unscrew?

LeonWaksman
Super User
370 Views

I don't have NUC like yours. But I suggest to unscrew the screw holding WiFi adapter and removing this adapter after disconnecting the antenna wires. Please see this clip showing how to do this on very similar NUC:https://www.youtube.com/watch?v=MwqrfIdyvGw&t=300s Intel NUC Fan Replacement - YouTube

Hope this will help

Leon

MOver2
Beginner
370 Views

Thanks to your tip, I managed to remove the board.

However the battery appears okay.

I was almost certain that the battery failed, because after a short power break, the clock was ok but not after a longer power break.

In the bios I found: "CMOS TIME NOT SET 1/1/2016 0, 0, 0".

Testing was done without an OS (thus no disk connected) to be sure that the problem did not come from the OS.

I suppose I will have to ask a new question to the forum.

Thanks again, Marc

HWAHS
Beginner
370 Views

I am trying to do the same. Can you tell me how you managed to remove the board. I did all above steps but can't get it out

MOver2
Beginner
370 Views

I followed the clip suggested by LWAKSMAN: https://www.youtube.com/watch?v=MwqrfIdyvGw&t=300s

It is indeed for a NUC5CPYH while mine is a NUC6CAYH.

these are my steps:

- remove harddisk

- remove the network module

- remove plastic cover on the backside which covers the vga connector (it clicks into chassis)

- unscrew the vga connector and remove it

- unscrew the 2 screws (like in the clip)

- at last remove the systemboard as described in the clip (you have to use some force but not too much)

HWAHS
Beginner
370 Views

Thanks for your detailed reply. I managed to get the board out, but the CMOS battery voltage was OK and removing it to reset the CMOS memory did not get the NUC to work. I will have to return it.