SV04 Boot Problems

Hey all!
I picked up a used SV04 off of Marketplace a couple of weeks ago and am just now getting around to messing with it.

This is the first Sovol printer Ive used, although I am not new to 3d printing.

This printer will not boot. The screen lights up with a progress bar, but the bar never progresses.

Ive checked for loose connections, and tried flashing the firmware but nothing has changed.

Any thoughts are appreciated, as would any troubleshooting hints for this printer.

Thank You!

For any other printer flashing would normally fix the issue, but the SV04…from what I’ve learned here isn’t a normal printer.

So I will ask for the user who can help you.

@Bjoern

Hello Tyson82 & welcome to the forum!

  1. You’ll need to install both firmware & display software. Ensure that both are matching.
  2. Ensure that the SD-card with the new firmware is formatted properly & not write protected.
  3. A successful firmware update will be indicated by a changed file name of the firmware installation file from “firmware.bin” to “firmware.CUR”.
  4. Information about display software installation is available here.

Good luck!
Björn

Thanks for the replies!
As mentioned, I have tried to flash the firmware but it doesn’t even attempt to read the SD card, as far as I can tell.

I did put the firmware on a freshly formatted SD Card that I know works fine, although it is a 16gig card…

Make sure your card is FAT32 and 4k allocation unit.

You may get better results if you shrink the partition to 4GB

thx for the suggestions. None of that changed anything.
I will try to find an 8 gig card tomorrow.

Are there hardware issues that will keep this machine from booting?

I don’t think any external hardware could prevent booting. The problem is, as @Bjoern pointed out the mainboard and the display have separate code and the versions have to match.

Measure your power supply output.

You could load up Prointerface and try to connect via USB. There is a USB to serial chip on the mainboard. Most of them use generic drivers but if your PC won’t show a com port when you plug in the usb cable don’t bother trying to establish a serial connection.

Have you read https://wiki.sovol3d.com/en/QUICKSTART

My strong suspicion is your mainboard is toast. There was another thread not too long ago where someone found a source for a new (old stock) SV04 mainboards.

Good Ole’ Marketplace!!

Hopefully it is salvageable

Are there options for mainboard upgrades? Doesnt look like there is anything available in direct replacement.

Looks like Sovol released a silent Creality board, but I cant find those either

There is (as far as I know) no drop in replacement for your mainboard. There are boards with enough drivers for an IDEX setup but none I’ve seen support 3 heaters out of the box.

The other consideration is the ribbon umbilical cables that plug into the SV04 mainboard. To use a generic board you’ll have to cut the connectors and identify all the wires or build an umbilical from scratch.

Quick and dirty - disable one extruder and use a generic 4/5 driver board. I seem to recall someone (in this forum) was plugging Creality Sprite umbilicals into the SV04 board so I would assume there is a matching mainboard… Don’t know which model it is. It would be possible to sync up 2 boards under Klipper and get back to IDEX.

The other option is put a mcu board on each extruder and use a low cost 4 driver mainboard. You’d need a host computer to run Klipper to talk to the 3 MCU’s. The good part is the umbilical reduces to 4 wires per toolhead.

Sounds like more work than its worth to me.

I will keep looking for a replacement. Maybe someone has a parts machine available.

If nothing else, I guess I can part this one out