480L - Factory Reset
Written by Will Fraser
Updated at December 19th, 2025
Question:
How do I factory reset my Lexicon 480L?
Answer:
Warning!
This will erase all user register and patch information.
To clear the memory, do the following:
- Power the machine down.
- Open up the front panel and remove the Host board (all precautions must be taken against static!)
- Locate the U38 and U39 (directly behind the ROMs.)
- Remove U38 and U39 from their sockets and short all of their pins to ground (The side of the chassis is ground if the machine is plugged into a grounded outlet, as it should be.)
- Reinstall the chips into their sockets (polarity is important!)
When you first power the machine on it will say “No Program." Do not be alarmed, just load a program as normal (press any number on the LARC.)