Sharp MX-3570 Operation Panel blank

[chatkal]

Hi guys! Need help!

Sharp MX-3570N - Operation panel is blank, but copier boots normally and if you tap the place on the Operation Panel where "Copy" icon resides the copier makes copies.
When you print from PC - it prints. Web page of the copier is accessible as well. It just Oper Panel that gives problem.

Operation panel ass'y and LVDS PWB replaced
Flat cable from MFPC to LVDS PWB replaced.
Harness from MFPC to LVDS - replaced
MFPC board - replaced
DС PWB - replaced
Fuser F10 next to CN33 on MFPC - OK

Still no effect. Operation Panel stays blank

Any ideas?
Thanks in advance!

[repn1999]

was this a new LVDS board or one from Hytec? we had one that was bad from Hytec. Same symptom.

[chatkal]

was this a new LVDS board or one from Hytec? we had one that was bad from Hytec. Same symptom.

It was the board from the working identical machine. Same model.

[moose55]

Msata card?

[pmillard]

Hi guys! Need help!

Sharp MX-3570N - Operation panel is blank, but copier boots normally and if you tap the place on the Operation Panel where "Copy" icon resides the copier makes copies.
When you print from PC - it prints. Web page of the copier is accessible as well. It just Oper Panel that gives problem.

Operation panel ass'y and LVDS PWB replaced
Flat cable from MFPC to LVDS PWB replaced.
Harness from MFPC to LVDS - replaced
MFPC board - replaced
DС PWB - replaced
Fuser F10 next to CN33 on MFPC - OK

Still no effect. Operation Panel stays blank

Any ideas?
Thanks in advance!

SCN MFPC PWB CN33 P38 CCFT is back light which goes to CN1 P3 of LVDS PWB, if everything works but no light check this. Then check CN 5 P7 of LVDS PWB to CN5 P6 of LCD