Williams Encore Digital Piano

J

John Keiser

Guest
Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.
 
On 09/01/2013 12:00 PM, John Keiser wrote:
Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.


http://williams.custhelp.com/
Click to expand...
 
"John Keiser" wrote in message
news:c5idnQVqIqNbE77PnZ2dnUVZ_t6dnZ2d@powerusenet.com...

Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.



What is not working?

Speaker Output?
Headphone output?
Line outputs?
MIDI output?

Some or all the above?



Gareth.
 
Been there and asked same question. Would not supply schematic or repair
mode secrets.

"dave" <ricketzz@earthlink.net> wrote in message
news:IJudndPzTagoMb7PnZ2dnUVZ_qudnZ2d@earthlink.com...
On 09/01/2013 12:00 PM, John Keiser wrote:
Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.


http://williams.custhelp.com/
Click to expand...
 
Intermittently, panel lights but all of the above fail.
Williams lists reset squences for some models, not the Encore.
Trial and error got me into "test mode" by powering and and pressing both
transpose keys.
Sound restored.
So I am thinking this might be a firmware issue rather than a bad solder
joint.
If this fails again, I was looking for further guidance. I assume there
might be a "restore" sequence but Williams customer service was mum.

"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:vdOUt.19237$ei6.16730@fx08.am4...
"John Keiser" wrote in message
news:c5idnQVqIqNbE77PnZ2dnUVZ_t6dnZ2d@powerusenet.com...

Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.



What is not working?

Speaker Output?
Headphone output?
Line outputs?
MIDI output?

Some or all the above?



Gareth.
Click to expand...
 
"John Keiser" wrote in message
news:rNSdnUYtyYI_Ir7PnZ2dnUVZ_qednZ2d@powerusenet.com...

Intermittently, panel lights but all of the above fail.
Williams lists reset squences for some models, not the Encore.
Trial and error got me into "test mode" by powering and and pressing both
transpose keys.
Sound restored.
So I am thinking this might be a firmware issue rather than a bad solder
joint.
If this fails again, I was looking for further guidance. I assume there
might be a "restore" sequence but Williams customer service was mum.

"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:vdOUt.19237$ei6.16730@fx08.am4...
"John Keiser" wrote in message
news:c5idnQVqIqNbE77PnZ2dnUVZ_t6dnZ2d@powerusenet.com...

Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.



What is not working?

Speaker Output?
Headphone output?
Line outputs?
MIDI output?

Some or all the above?



Gareth.
Click to expand...


It sounds more like a Power Supply problem to me.

Are you using the power supply originally supplied with the keyboard?


Gareth
 
I have 2: the original and a replacement. 12V 4 amps. Both show good under
load. [Owner had thought power supply could be the issue, also.]


"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:4iPUt.28741$Wl2.10207@fx04.am4...
"John Keiser" wrote in message
news:rNSdnUYtyYI_Ir7PnZ2dnUVZ_qednZ2d@powerusenet.com...

Intermittently, panel lights but all of the above fail.
Williams lists reset squences for some models, not the Encore.
Trial and error got me into "test mode" by powering and and pressing both
transpose keys.
Sound restored.
So I am thinking this might be a firmware issue rather than a bad solder
joint.
If this fails again, I was looking for further guidance. I assume there
might be a "restore" sequence but Williams customer service was mum.

"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:vdOUt.19237$ei6.16730@fx08.am4...


"John Keiser" wrote in message
news:c5idnQVqIqNbE77PnZ2dnUVZ_t6dnZ2d@powerusenet.com...

Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.



What is not working?

Speaker Output?
Headphone output?
Line outputs?
MIDI output?

Some or all the above?



Gareth.





It sounds more like a Power Supply problem to me.

Are you using the power supply originally supplied with the keyboard?


Gareth
Click to expand...
 
"John Keiser" wrote in message
news:n46dnUfNGtHqcb7PnZ2dnUVZ_gCdnZ2d@powerusenet.com...

I have 2: the original and a replacement. 12V 4 amps. Both show good under
load. [Owner had thought power supply could be the issue, also.]


"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:4iPUt.28741$Wl2.10207@fx04.am4...
"John Keiser" wrote in message
news:rNSdnUYtyYI_Ir7PnZ2dnUVZ_qednZ2d@powerusenet.com...

Intermittently, panel lights but all of the above fail.
Williams lists reset squences for some models, not the Encore.
Trial and error got me into "test mode" by powering and and pressing both
transpose keys.
Sound restored.
So I am thinking this might be a firmware issue rather than a bad solder
joint.
If this fails again, I was looking for further guidance. I assume there
might be a "restore" sequence but Williams customer service was mum.

"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:vdOUt.19237$ei6.16730@fx08.am4...


"John Keiser" wrote in message
news:c5idnQVqIqNbE77PnZ2dnUVZ_t6dnZ2d@powerusenet.com...

Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.



What is not working?

Speaker Output?
Headphone output?
Line outputs?
MIDI output?

Some or all the above?



Gareth.





It sounds more like a Power Supply problem to me.

Are you using the power supply originally supplied with the keyboard?


Gareth
Click to expand...

"John Keiser" wrote in message
news:n46dnUfNGtHqcb7PnZ2dnUVZ_gCdnZ2d@powerusenet.com...

I have 2: the original and a replacement. 12V 4 amps. Both show good under
load. [Owner had thought power supply could be the issue, also.]






Most likely suspects in order of likelyness:

Dry joint on, or damage to, DC input socket. (Usually confirmable by
wiggling it)
Dry joints on other component parts of the power supply regulation circuit.
Damaged components/PCB traces due to incorrect polarity PSU being used.

Least likely suspect is firmware or anything computational.



Gareth.
 
Thanks. I will plod along further.


"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:99XUt.17163$Kl4.607@fx36.am4...
"John Keiser" wrote in message
news:n46dnUfNGtHqcb7PnZ2dnUVZ_gCdnZ2d@powerusenet.com...

I have 2: the original and a replacement. 12V 4 amps. Both show good
under
load. [Owner had thought power supply could be the issue, also.]


"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:4iPUt.28741$Wl2.10207@fx04.am4...


"John Keiser" wrote in message
news:rNSdnUYtyYI_Ir7PnZ2dnUVZ_qednZ2d@powerusenet.com...

Intermittently, panel lights but all of the above fail.
Williams lists reset squences for some models, not the Encore.
Trial and error got me into "test mode" by powering and and pressing both
transpose keys.
Sound restored.
So I am thinking this might be a firmware issue rather than a bad solder
joint.
If this fails again, I was looking for further guidance. I assume there
might be a "restore" sequence but Williams customer service was mum.

"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:vdOUt.19237$ei6.16730@fx08.am4...


"John Keiser" wrote in message
news:c5idnQVqIqNbE77PnZ2dnUVZ_t6dnZ2d@powerusenet.com...

Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.



What is not working?

Speaker Output?
Headphone output?
Line outputs?
MIDI output?

Some or all the above?



Gareth.





It sounds more like a Power Supply problem to me.

Are you using the power supply originally supplied with the keyboard?


Gareth


"John Keiser" wrote in message
news:n46dnUfNGtHqcb7PnZ2dnUVZ_gCdnZ2d@powerusenet.com...

I have 2: the original and a replacement. 12V 4 amps. Both show good
under
load. [Owner had thought power supply could be the issue, also.]






Most likely suspects in order of likelyness:

Dry joint on, or damage to, DC input socket. (Usually confirmable by
wiggling it)
Dry joints on other component parts of the power supply regulation
circuit.
Damaged components/PCB traces due to incorrect polarity PSU being used.

Least likely suspect is firmware or anything computational.



Gareth.
Click to expand...
 
Not the power supply, I think.
Unit plays fine for hours.
Then goes mute. Powering up into test mode restores sound.
So far everytime.
The reboot and plays fine again for a long while.
If it stays this way, only an irritation but I'd welcome any more hints.


"John Keiser" <john.keiser2@hawaiiantel.net> wrote in message
news:GdSdnVCcv_o2YLnPnZ2dnUVZ_sudnZ2d@powerusenet.com...
Thanks. I will plod along further.


"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:99XUt.17163$Kl4.607@fx36.am4...


"John Keiser" wrote in message
news:n46dnUfNGtHqcb7PnZ2dnUVZ_gCdnZ2d@powerusenet.com...

I have 2: the original and a replacement. 12V 4 amps. Both show good
under
load. [Owner had thought power supply could be the issue, also.]


"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:4iPUt.28741$Wl2.10207@fx04.am4...


"John Keiser" wrote in message
news:rNSdnUYtyYI_Ir7PnZ2dnUVZ_qednZ2d@powerusenet.com...

Intermittently, panel lights but all of the above fail.
Williams lists reset squences for some models, not the Encore.
Trial and error got me into "test mode" by powering and and pressing
both
transpose keys.
Sound restored.
So I am thinking this might be a firmware issue rather than a bad solder
joint.
If this fails again, I was looking for further guidance. I assume there
might be a "restore" sequence but Williams customer service was mum.

"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:vdOUt.19237$ei6.16730@fx08.am4...


"John Keiser" wrote in message
news:c5idnQVqIqNbE77PnZ2dnUVZ_t6dnZ2d@powerusenet.com...

Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.



What is not working?

Speaker Output?
Headphone output?
Line outputs?
MIDI output?

Some or all the above?



Gareth.





It sounds more like a Power Supply problem to me.

Are you using the power supply originally supplied with the keyboard?


Gareth


"John Keiser" wrote in message
news:n46dnUfNGtHqcb7PnZ2dnUVZ_gCdnZ2d@powerusenet.com...

I have 2: the original and a replacement. 12V 4 amps. Both show good
under
load. [Owner had thought power supply could be the issue, also.]






Most likely suspects in order of likelyness:

Dry joint on, or damage to, DC input socket. (Usually confirmable by
wiggling it)
Dry joints on other component parts of the power supply regulation
circuit.
Damaged components/PCB traces due to incorrect polarity PSU being used.

Least likely suspect is firmware or anything computational.



Gareth.
Click to expand...
 
"John Keiser" <john.keiser2@hawaiiantel.net> wrote in message
news:Cvqdnb7vJdLzwrjPnZ2dnUVZ_sSdnZ2d@powerusenet.com...
Not the power supply, I think.
Unit plays fine for hours.
Then goes mute. Powering up into test mode restores sound.
So far everytime.
The reboot and plays fine again for a long while.
If it stays this way, only an irritation but I'd welcome any more hints.
Click to expand...


Are you saying that powering up into test mode works every time, but
powering up into normal mode doesn't?


Gareth.
 
"John Keiser" <john.keiser2@hawaiiantel.net> wrote in message
news:Cvqdnb7vJdLzwrjPnZ2dnUVZ_sSdnZ2d@powerusenet.com...
Not the power supply, I think.
Unit plays fine for hours.
Then goes mute. Powering up into test mode restores sound.
So far everytime.
The reboot and plays fine again for a long while.
If it stays this way, only an irritation but I'd welcome any more hints.


"John Keiser" <john.keiser2@hawaiiantel.net> wrote in message
news:GdSdnVCcv_o2YLnPnZ2dnUVZ_sudnZ2d@powerusenet.com...
Thanks. I will plod along further.


"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:99XUt.17163$Kl4.607@fx36.am4...


"John Keiser" wrote in message
news:n46dnUfNGtHqcb7PnZ2dnUVZ_gCdnZ2d@powerusenet.com...

I have 2: the original and a replacement. 12V 4 amps. Both show good
under
load. [Owner had thought power supply could be the issue, also.]


"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:4iPUt.28741$Wl2.10207@fx04.am4...


"John Keiser" wrote in message
news:rNSdnUYtyYI_Ir7PnZ2dnUVZ_qednZ2d@powerusenet.com...

Intermittently, panel lights but all of the above fail.
Williams lists reset squences for some models, not the Encore.
Trial and error got me into "test mode" by powering and and pressing
both
transpose keys.
Sound restored.
So I am thinking this might be a firmware issue rather than a bad
solder
joint.
If this fails again, I was looking for further guidance. I assume
there
might be a "restore" sequence but Williams customer service was mum.

"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:vdOUt.19237$ei6.16730@fx08.am4...


"John Keiser" wrote in message
news:c5idnQVqIqNbE77PnZ2dnUVZ_t6dnZ2d@powerusenet.com...

Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.



What is not working?

Speaker Output?
Headphone output?
Line outputs?
MIDI output?

Some or all the above?



Gareth.





It sounds more like a Power Supply problem to me.

Are you using the power supply originally supplied with the keyboard?


Gareth


"John Keiser" wrote in message
news:n46dnUfNGtHqcb7PnZ2dnUVZ_gCdnZ2d@powerusenet.com...

I have 2: the original and a replacement. 12V 4 amps. Both show good
under
load. [Owner had thought power supply could be the issue, also.]






Most likely suspects in order of likelyness:

Dry joint on, or damage to, DC input socket. (Usually confirmable by
wiggling it)
Dry joints on other component parts of the power supply regulation
circuit.
Damaged components/PCB traces due to incorrect polarity PSU being used.

Least likely suspect is firmware or anything computational.



Gareth.
Click to expand...

Nevertheless, you normally have to start by looking at the power supply, not
just raw voltage but often "quality" as well.


Example: ripple, oscillation etc.


Let's suppose a crappy 10uF capacitor at the output of a +12V regulator
causes it to break into oscillation, but rebooting in test mode draws a bit
more current and kills the oscillation temporarily.

Restart, runs a bit longer, breaks into oscillation again.

Your only clue using a simple multimeter might appear to be a low DC
voltage, perhaps, but no clue about the oscillation without a 'scope.

All I'm really suggesting though is don't exclude the power supply - keep
your mind open.


Mark Z.
 
"Gareth Magennis" <sound.service@btconnect.com> wrote in message
news:C_WdnU9HH9f3MbjPnZ2dnUVZ8nSdnZ2d@bt.com...
"John Keiser" <john.keiser2@hawaiiantel.net> wrote in message
news:Cvqdnb7vJdLzwrjPnZ2dnUVZ_sSdnZ2d@powerusenet.com...
Not the power supply, I think.
Unit plays fine for hours.
Then goes mute. Powering up into test mode restores sound.
So far everytime.
The reboot and plays fine again for a long while.
If it stays this way, only an irritation but I'd welcome any more hints.





Are you saying that powering up into test mode works every time, but
powering up into normal mode doesn't?


Gareth.
Click to expand...

If it has a Rom or Eprom and is more than 10 - 20 years old, you might have
a firmware problem with bit rot.

tm
 
Yes, so far test mode has been a reliable fix. Everytime.

"Gareth Magennis" <sound.service@btconnect.com> wrote in message
news:C_WdnU9HH9f3MbjPnZ2dnUVZ8nSdnZ2d@bt.com...
"John Keiser" <john.keiser2@hawaiiantel.net> wrote in message
news:Cvqdnb7vJdLzwrjPnZ2dnUVZ_sSdnZ2d@powerusenet.com...
Not the power supply, I think.
Unit plays fine for hours.
Then goes mute. Powering up into test mode restores sound.
So far everytime.
The reboot and plays fine again for a long while.
If it stays this way, only an irritation but I'd welcome any more hints.





Are you saying that powering up into test mode works every time, but
powering up into normal mode doesn't?


Gareth.
Click to expand...
 
Ah. Interesting and way beyond my ability to fix. :)


"tm" <No_one_home@white-house.gov> wrote in message
news:l04ptr$98u$1@dont-email.me...
"Gareth Magennis" <sound.service@btconnect.com> wrote in message
news:C_WdnU9HH9f3MbjPnZ2dnUVZ8nSdnZ2d@bt.com...

"John Keiser" <john.keiser2@hawaiiantel.net> wrote in message
news:Cvqdnb7vJdLzwrjPnZ2dnUVZ_sSdnZ2d@powerusenet.com...
Not the power supply, I think.
Unit plays fine for hours.
Then goes mute. Powering up into test mode restores sound.
So far everytime.
The reboot and plays fine again for a long while.
If it stays this way, only an irritation but I'd welcome any more hints.





Are you saying that powering up into test mode works every time, but
powering up into normal mode doesn't?


Gareth.


If it has a Rom or Eprom and is more than 10 - 20 years old, you might
have a firmware problem with bit rot.

tm
Click to expand...
 
No scope available but I will keep this in mind.
Thank you all.


"Mark Zacharias" <mark_zacharias@labolgcbs.net> wrote in message
news:5225bb70$0$16934$862e30e2@ngroups.net...
"John Keiser" <john.keiser2@hawaiiantel.net> wrote in message
news:Cvqdnb7vJdLzwrjPnZ2dnUVZ_sSdnZ2d@powerusenet.com...
Not the power supply, I think.
Unit plays fine for hours.
Then goes mute. Powering up into test mode restores sound.
So far everytime.
The reboot and plays fine again for a long while.
If it stays this way, only an irritation but I'd welcome any more hints.


"John Keiser" <john.keiser2@hawaiiantel.net> wrote in message
news:GdSdnVCcv_o2YLnPnZ2dnUVZ_sudnZ2d@powerusenet.com...
Thanks. I will plod along further.


"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:99XUt.17163$Kl4.607@fx36.am4...


"John Keiser" wrote in message
news:n46dnUfNGtHqcb7PnZ2dnUVZ_gCdnZ2d@powerusenet.com...

I have 2: the original and a replacement. 12V 4 amps. Both show good
under
load. [Owner had thought power supply could be the issue, also.]


"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:4iPUt.28741$Wl2.10207@fx04.am4...


"John Keiser" wrote in message
news:rNSdnUYtyYI_Ir7PnZ2dnUVZ_qednZ2d@powerusenet.com...

Intermittently, panel lights but all of the above fail.
Williams lists reset squences for some models, not the Encore.
Trial and error got me into "test mode" by powering and and pressing
both
transpose keys.
Sound restored.
So I am thinking this might be a firmware issue rather than a bad
solder
joint.
If this fails again, I was looking for further guidance. I assume
there
might be a "restore" sequence but Williams customer service was mum.

"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:vdOUt.19237$ei6.16730@fx08.am4...


"John Keiser" wrote in message
news:c5idnQVqIqNbE77PnZ2dnUVZ_t6dnZ2d@powerusenet.com...

Sold by Guitar Center.
Unit power up but is mute.
Possible firmware issue?
Possible bad solder joint?
Anyone have a schematic or service manual to reset firmware?
Other servicing hints?
Thank you.



What is not working?

Speaker Output?
Headphone output?
Line outputs?
MIDI output?

Some or all the above?



Gareth.





It sounds more like a Power Supply problem to me.

Are you using the power supply originally supplied with the keyboard?


Gareth


"John Keiser" wrote in message
news:n46dnUfNGtHqcb7PnZ2dnUVZ_gCdnZ2d@powerusenet.com...

I have 2: the original and a replacement. 12V 4 amps. Both show good
under
load. [Owner had thought power supply could be the issue, also.]






Most likely suspects in order of likelyness:

Dry joint on, or damage to, DC input socket. (Usually confirmable by
wiggling it)
Dry joints on other component parts of the power supply regulation
circuit.
Damaged components/PCB traces due to incorrect polarity PSU being used.

Least likely suspect is firmware or anything computational.



Gareth.








Nevertheless, you normally have to start by looking at the power supply,
not just raw voltage but often "quality" as well.


Example: ripple, oscillation etc.


Let's suppose a crappy 10uF capacitor at the output of a +12V regulator
causes it to break into oscillation, but rebooting in test mode draws a
bit more current and kills the oscillation temporarily.

Restart, runs a bit longer, breaks into oscillation again.

Your only clue using a simple multimeter might appear to be a low DC
voltage, perhaps, but no clue about the oscillation without a 'scope.

All I'm really suggesting though is don't exclude the power supply - keep
your mind open.


Mark Z.
Click to expand...
 
"Gareth Magennis" <sound.service@btconnect.com> wrote in message
news:C_WdnU9HH9f3MbjPnZ2dnUVZ8nSdnZ2d@bt.com...
"John Keiser" <john.keiser2@hawaiiantel.net> wrote in message
news:Cvqdnb7vJdLzwrjPnZ2dnUVZ_sSdnZ2d@powerusenet.com...
Not the power supply, I think.
Unit plays fine for hours.
Then goes mute. Powering up into test mode restores sound.
So far everytime.
The reboot and plays fine again for a long while.
If it stays this way, only an irritation but I'd welcome any more hints.





Are you saying that powering up into test mode works every time, but
powering up into normal mode doesn't?


Gareth.
Click to expand...


"John Keiser" wrote in message
news:LbOdnVHCl7MubrjPnZ2dnUVZ_sadnZ2d@powerusenet.com...

Yes, so far test mode has been a reliable fix. Everytime.





That's a pretty unusual set of circumstances.
(Do you know if it has a memory backup battery? If so, can you measure it
to see if it is good or bad?)

Well, if the fault is cleared by going into Test Mode but not cleared by a
normal boot, that pretty much excludes everything except the
mainboard/firmware, and possibly backup battery, though that's a long shot.



Gareth.
 
Oh, I have just thought of one more thing:


It might be possible that one of the front panel switches could be faulty,
in that it is permanently or temporarily held on.
This means the keyboard boots up with one or more switches depressed, and/or
operates with this switch permanently or temporarily depressed.

This is often a useful tactic to use - booting into Test Mode for example,
but sometimes might prevent the keyboard from booting properly, or possibly
corrupt the system when it does, if the firmware programming is not robust
enough to deal with such unexpected events.


My gut feeling though is you have a Flash Memory problem or dry joints on
the Mainboard.



Gareth.
 
Yes, odd but seemingly reliable was to restore.
I think I am agreeing with you about the mainboard or battery backup..
I have not determined how to nondestructively get to the mainboard to see if
there is a backup battery.
If anyone has actual experience with this kepboard, any direct advice on how
to disassemble would be appreciated.
Thank you.



"Gareth Magennis" <gareth.magennis@ntlworld.com> wrote in message
news:DSpVt.96772$5k2.94010@fx03.am4...
Oh, I have just thought of one more thing:


It might be possible that one of the front panel switches could be faulty,
in that it is permanently or temporarily held on.
This means the keyboard boots up with one or more switches depressed,
and/or operates with this switch permanently or temporarily depressed.

This is often a useful tactic to use - booting into Test Mode for example,
but sometimes might prevent the keyboard from booting properly, or
possibly corrupt the system when it does, if the firmware programming is
not robust enough to deal with such unexpected events.


My gut feeling though is you have a Flash Memory problem or dry joints on
the Mainboard.



Gareth.
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