i have an LXP-15 that needs the 16 position "page" switched
repaired/replaced. seem neither lexicon nor jim fabiano are able to help
here. any suggestions?

thanks,

Yea - call Lexicon and have them give you the phone# of that guy in
Boston that designed that old equipment. It can still be fixed (for a
price)

wrote:
Yea - call Lexicon and have them give you the phone# of that guy in
Boston that designed that old equipment. It can still be fixed (for a
price)

And find that the switch is unavailable (been there, done that). The
major gottcha is that the 16 position switch is not binary- it is Gray
Code - try finding one of those in your RS or Farnell catalog. In
desparation I resorted to using a 4 bit binary switch and a 16V8 GAL to
translate (messy!)
M

wrote:
Yea - call Lexicon and have them give you the phone# of that guy in
Boston that designed that old equipment. It can still be fixed (for a
price)

Jim Fabiano (http://www.jimfabiano.com) doesn't repair the
Lexicon LXP-15's; he has a rather specific group of legacy products he
repairs and has software upgrades for that's unfortunately not on the
list.

I am looking for a software upgrade for a PCM90 if anyone has one
of those lying around somewhere (makes it useable with a Dual reverb
Card.).

Will Miho
NY TV/Audio Post/Music/Live Sound Guy
"The large print giveth and the small print taketh away..." Tom Waits

wrote:

And find that the switch is unavailable (been there, done that). The
major gottcha is that the 16 position switch is not binary- it is Gray
Code - try finding one of those in your RS or Farnell catalog. In
desparation I resorted to using a 4 bit binary switch and a 16V8 GAL to
translate (messy!)

any further thoughts, anyone???


www.ttrstudios.com

wrote:
wrote:

And find that the switch is unavailable (been there, done that). The
major gottcha is that the 16 position switch is not binary- it is Gray
Code - try finding one of those in your RS or Farnell catalog. In
desparation I resorted to using a 4 bit binary switch and a 16V8 GAL to
translate (messy!)

any further thoughts, anyone???

Use a 4-gang switch and some diodes?

Gray code _used_ to be very common for encoders... I know there are a
few of them left in the Digi-Key catalogue. It's a great idea and makes
debouncing much simpler.
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."

One can always remove them from broken LXP-x units or the Alex and
Reflex. A cleaning will sometimes return normal operation. Consider
using the MRC remote with these. It will program without a functioning
rotary encoder. I got type 2 software eproms from Jim Fabiano for the
LXP-15. Anyone with a programmer could take a type 2 eprom and copy it.

Jim Williams
Audio Upgrades