I too had this problem of random date data & unresponsive keyboard,
albeit with a T102. It usually came right after being on 10mins, but
eventually didn't. I found there was no Timing Pulse (TP) from the RTC.
This lead me to Chip Select (CS) which was open. It is fed by /RESET so
should have
If fixing the board voltages does not remove the problem the next issue could
be dry joints near the clock chip, at least on two machines I repaired that
was the problem. It looks like the clock chip was placed as a second op when
the boards were made and the soldering was not very good. In
I have at least one machine with this type of error. Would be great to
figure out what has to break for that to occur.
On Sun, Jan 6, 2019 at 8:37 AM Eric LK wrote:
> Hi,
>
> I'm still waiting for my replacement Ni-Cad battery but I've been
> continuing using my M100 without any other
A quick check is to measure the voltages at the VDD and VEE test points
marked on the motherboard, they should be a strong +5V and -5V
respectively. From the fault you are reporting it sounds as if the main
motherboard voltages are bad. The NiCd should be about 3.7V when the
power is off. The
Hi,
I'm still waiting for my replacement Ni-Cad battery but I've been
continuing using my M100 without any other issue... until tonight.
When I turned it on, the "low battery" light was on, and the date
displayed on the first line was wrong: ◥5ÿ 00,1919 Sun 00:00:00
I switched it off and on
