I agree with ceocass, however if you find that the contacts are clean and you have made certain that the charging cradle is plugged in you may simply need to replace the battery.
Please note that the replacement batteries for the MX3000 Universal Remote Control, p/n's Powercard PC046067-H & PC036067V3 have been discontinued.
TheBatteryStore.com now carries an alternative battery, p/n PL056067V3 which is a 2,100 mAh typical capacity battery that can be used as a replacement.
Please confirm that the connector type is the same as your battery prior to placing your order. We only carry this battery with the Version 3 connector which has a built in pressure release tab.
The link for the product page is:
http://www.thebatterystore.com/replacementbatteryforuniversalremotemx-300037v2100mahli-ionpolymerrechargeable.aspx
If you have any questions please contact TheBatteryStore.com at
[email protected].