"Jay Kadis" wrote in message
...
In article ,
david correia wrote:

In article UHC_e.4735$211.3248@trnddc08,
"Alex Gerst" wrote:

I have the same problem, I wonder if a hard reset would do the trick?
"Jay Kadis" wrote in message
...
In article PPB_e.4725$211.2103@trnddc08, "Alex Gerst"

wrote:

Does anybody have a Lexicon 224XL manual online that I can
reference. I
can't seem to be able to store any patches on mine.
Thanks,Alex

I have the same problem. It boots without diagnostic failure but
fails
to
store
new patches. The old ones are intact and can be modified but not
stored.
I
checked the backup batteries and they're fine. I'm guessing it's a
logic
problem. Given the age and all, I've just decided to live with it as
is.

We never had a service manual.

-Jay



Contact Jim Fabiano, the Lexicon repair guy.


http://www.jimfabiano.com/



David Correia
www.Celebrationsound.com

I gave up after many attempts by phone and e-mail.

-Jay
--
x------- Jay Kadis ------- x---- Jay's Attic Studio ------x
x Lecturer, Audio Engineer x Dexter Records x
x CCRMA, Stanford University x http://www.offbeats.com/ x
x---------- http://ccrma.stanford.edu/~jay/ ------------x



Hi,

The 224XL has 3 tagged Nicads soldered to the uppermost CPU board. They
have a limited life like all Nicads and often leak. You will need to
replace these and, if the leaking has damaged the PCB tracks, you may need
to repair them. Sometimes this is why just replacing them doesn't work.
Also there is a 270 ohm resistor from the +ve terminal to the backup rail
that you should check. You should be able to measure the Nicad voltage
(about 3.5 volts) on pin 18 of U12. If this is present but the memory still
fails on powerdown, change this memory chip. (It's a 6514 or 2114 RAM chip).
If you replace this, it MUST be a CMOS version of the device, otherwise the
current drain will empty the batteries in less than a day. Good luck trying
to find one.

It's easy to pop the boards out - take a look and all will be rather
obvious.





Gareth.