Troubleshooting: Brand new Sharp04 LCD screen is not workable.
We have got some feedback about the new LCD not workable on their printers. and write this article to help you check it.
The Sharp04 is base on X04 pinout, which most ChiTu boards can connect directly. The original Anycubic photon uses the ChiTu L V1 board, it is an x03 pinout.
You can connect it directly on Elegoo Mars or Mars pro, for Photon or Photon S, you will have to use the X03 to X04 adapter, or it will destroy the board.
Also, the Wrong way to use the MIPI to MIPI will also destroy the board in our test, If you connect the wrong way as shown below, the LCD could work at first,
during the wrong time printing, the screen and board will have risk damaged.
If your wire connection is right, but the LCD still not work, please check the “U3” chip to see if your board is workable.
For the original photon user(Chitu L V1), it needs X03 to X04 driver adapter to make the Sharp04 work.
- Test the C123，C74 capacitance-voltage, The normal range should be around (+)5.7-6.0 and (-)5.7-6.0
If one of the C123 or C74 capacitance has a different voltage range, the “U3” chip ( NT50198BQG) is dead, please contact the support,
If every step is right and the board is good, but the LCD still not work, it may be the adapter issue or screen dead-on-arrival.
For Mars/ Mars Pro (ChiTu L V2). It can connect the sharp04 directly
- Test the C23，C61 capacitance-voltage, The normal range should be around (+)5.7-6.0 and (-)5.7-6.0
For Creality LD-002R (ChiTu L V3). It can connect the Sharp04 LCD directly. but the thickness is a little different so please buy the LCD from official Creality.
- Test the C104，C61 capacitance-voltage, The normal range should be around (+)5.7-6.0 and (-)5.7-6.0
If one of the C123 or C74 capacitance has a different voltage range, the “U3” chip( NT50198BQG) is dead, please contact the support, or fix it yourself.
Thank you Vinicius Silva provide the info below to show how to fix the “U3” chip.
This video shows the removal of the part with a hot air station: YouTube tutorial
This post goes into more details about the part number and what to replace https://www.facebook.com/Photonsters/posts/743426846111298