# Sovol replacement motherboard

**URL:** <https://forum.sovol3d.com/t/sovol-replacement-motherboard/7855>\
**Category:** Sovol SV08\
**Created:** [May 21, 2025, 9:55pm UTC](https://forum.sovol3d.com/t/sovol-replacement-motherboard/7855 "2025-05-21T21:55:56Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Mike.Iirish](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@Mike.Iirish](https://forum.sovol3d.com/u/Mike.Iirish)\
**Post date:** [May 21, 2025, 9:55pm UTC](https://forum.sovol3d.com/t/sovol-replacement-motherboard/7855/1 "2025-05-21T21:55:56Z")

</div>

Hi all. I had a problem with my new sv08 and received a new motherboard but I cannot get the printer to work. the printer just sits there with the boot up screen. I have tried to replace the Emmu with a new larger one the 32gb one bet the problem is still there.  
Has anyone had a similar experience, or could someone with more experience help.  
Cheer. Mike Irish.

---

<div class="post-metadata">

**Author:** ![cardoc](https://avatars.discourse-cdn.com/v4/letter/c/ec9cab/32.png) [@cardoc](https://forum.sovol3d.com/u/cardoc)\
**Post date:** [May 21, 2025, 10:29pm UTC](https://forum.sovol3d.com/t/sovol-replacement-motherboard/7855/2 "2025-05-21T22:29:27Z")

</div>

The EMMC must contain a valid image (Armbian + klipper etc) to boot. Once it boots it then launches the Sovol software than runs the touchscreen.

Are you looking at the printer touch screen or some other device?

---

<div class="post-metadata">

**Author:** ![Mike.Iirish](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@Mike.Iirish](https://forum.sovol3d.com/u/Mike.Iirish)\
**Post date:** [May 22, 2025, 3:13am UTC](https://forum.sovol3d.com/t/sovol-replacement-motherboard/7855/3 "2025-05-22T03:13:08Z")

</div>

The printer hdmi touchscreen. I am thinking it is one of the following.  
1: faulty tool headboard.  
2: cable from toolhead to main motherboard faulty.  
3: reprogram the toolhead with adaptor. If O need to use the adaptor to reprogram what pins on the adaptor to connect to the toolhead?

---

<div class="post-metadata">

**Author:** ![cardoc](https://avatars.discourse-cdn.com/v4/letter/c/ec9cab/32.png) [@cardoc](https://forum.sovol3d.com/u/cardoc)\
**Post date:** [May 22, 2025, 3:38am UTC](https://forum.sovol3d.com/t/sovol-replacement-motherboard/7855/4 "2025-05-22T03:38:20Z")

</div>

The stock SV08 touchscreen is not HDMI it connects internally via a SPI connection.

There is a HDMI port on the mainboard.

Unplug the toolhead at the main board and Linux should still boot, start Klipper THEN throw errors to the screen.

Plug a HDMI monitor into the mainboard and you should see 150-200 lines of text ouput as Linux goes through the boot process… Except I bet it hangs early due to a issue with the OS image on the EMMC