LXP-5 Diagnostics for Flakey Knobs
Garry Simmons
besides myself with flakey LXP-5s. The behaviour I see is that the LED
will randomly change color from blinking green to red, etc. The more
annoying problem is that the damn thing changes patches/setting on its own.
I called the fine folks at Lexicon and was told that the problem is due
to one (or more) positions on one or more of the rotary knobs going bad. They
gave me the following instructions for figuring out which positions are
"good". Realize of course, that unless you are using an MRC to control the
LXP-5, you simply need to get the rotary switches replaced (about $4 each
from Lexicon for parts, you get them installed yourself). The following
diag lets you identify "good" settings for your knobs that will let you
use your MRC and not have the LXP-5 change stuff on you. If you have any
questions, call Greg or Brian at Lexicon in Massachusetts 617-736-0372.
1) Unplug the unit from the wall
2) Plug it back while holding the Learn button in.
3) Release the Learn button (no lights will be on at this point).
4) Turn the Preset knob to "Edit B"
5) Press and Release the Learn button (the LED will be RED now).
6) Set all three rotary switches (Preset, ????, Adjust) to the same
position. I started from Bypass, Min, Min.
7) If the LED is green, this is a good setting for the LXP-5.
If the LED is red, this combo of positions is hosed.
8) Move all three rotary switches to the next position and observe the
color of the LED. Green = Good. Red = Bad.
9) Repeat step 8 until you have checked all 16 positions. Remember, for
the test to work, all three switches must in the same position.
My LXP only worked in a couple positions, so I ordered new parts and will
have an electronics tech put them in. I hope a few of you out there will
be able to use this to get a few more miles out of your LXP-5 before
taking a soldering iron to it (Nick, metlay).
Have fun twiddlin' your knobs!
Garry
sim...@ittc.wec.com