| ??? 04/07/06 06:38 Read: times |
#113790 - In some models.. Responding to: ???'s previous message |
the backlight supply is commoned with the LCD supply, in which case you must change the LCD. If atleast the anode is a separate connection, then you can put a PNP transistor in series with the anode to control the backlight. |
| Topic | Author | Date |
| To turn OFF LCD backlight | 01/01/70 00:00 | |
| Not by code | 01/01/70 00:00 | |
| LCD backlight | 01/01/70 00:00 | |
| To turn OFF LCD backlight | 01/01/70 00:00 | |
| MOSFET | 01/01/70 00:00 | |
| check the connection diagram | 01/01/70 00:00 | |
| Are you confusing between contrast... | 01/01/70 00:00 | |
| Check my changes in connections | 01/01/70 00:00 | |
| In some models.. | 01/01/70 00:00 | |
| Voltage level at the backlight pins. | 01/01/70 00:00 | |
| Is cathode short to the ground pin? | 01/01/70 00:00 | |
| cathode is at 0V | 01/01/70 00:00 | |
| Did you check for short between | 01/01/70 00:00 | |
| problem in contrast | 01/01/70 00:00 | |
| See earlier PNP solution | 01/01/70 00:00 | |
| Thank you very much | 01/01/70 00:00 | |
using 5V for backlight? | 01/01/70 00:00 |