Your Dallas RTC chip has an internal lithium battery that failed. You will
need to order a new DS-1287 Dallas chip from Ten Tec (20 bucks) and replace
the device. Unfortunately, it is a 24 pin part that is soldered to the PC
board. You might as well replace the other Dallas memory chip as well
(DS-1220) since it also has the same battery back up. The internal lithium
cells are only good for 10 ten years. Be very, very careful to buy chips
from a reputable source--there are a lot of out of date parts being sold by
bad vendors, esp. from China.
Pete
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|