pearl 8130 not charging or connecting but USB port is not bad

[kbirish37]

3 days ago my blackberry pearl 8130 (purchased new nov 2008) ceased to charge or connect to the computer.
-have tried pulling battery
-have attempted with 4 other batteries, 2 verified good while in another phone
-have restarted computer (still does not see phone, even as USB peripheral)
-have used several cables and wall chargers
-have reinstalled DM6 (does not see phone)
-have installed java command prompt (does not see phone with any command)
-have installed verizon apploader (does not see phone)
-when battery is pulled and plugged in screen shows battery icon with cross
-when plugged in and on will show charging icon for 1-2 seconds then will not charge
-when plugged in while off will flash green charging light twice then stop
-can connect bluetooth
-the first day i got it to charge 3 times (charging icon stayed on screen and battery did infact charge), apparently randomly, but since then is completely unresponsive to USB connection (again - either wall or computer)

What are my next steps? I can only think to try cradle (on order, arrive 2-3 days) or spanking new battery (on order 2-3 days)

Can i reinstall blackberry OS from the phone itself?
Has anyone else seen an issue like this?

[JeffH]

A two year old battery is almost certainly the problem. But you said you tried two known good batteries in your phone and that didn't help. If that's correct, then it sounds like a failure in the phone's internal charging circuitry. That means it's time for a new phone. It won't be worth repairing your old one.

[kbirish37]

turns out it was the USB port, bought a new cradle and charges fine, unfortunately no USB = no connection to PC