What is it for the "Battery (secondary) ?

Hello guys,

do u know what is the use of the :

BT-021 BATTERY (SECONDARY) that mount the BT9901 (Lithium battery) ?

Below is the skematic of the pc330. I payed 8 box for it.

http://www.mediafire.com/download.php?mwumwjt0iyn


My guess is that I blow up some component of one of the two circuit :

1) BT-021 BATTERY (SECONDARY) that mount the BT9901 (Lithium battery)

or

2) BJ-005 DC/USB/DV JACK


I was windering if someone of u knows what is the pourpose of that
BT-021 BATTERY (SECONDARY)

My sony does not turn on at all, like there is no energy passing through it.

Thank you

why do you think its the secondary battery if the cam doesnt turn on?

maybe thats the battery that keeps the time/date data on the cam when the main battery isnt attached

Hi,
the camera does not turn on because I fried the circuit that bring the power.
If u open the camera that circuit is 1 piece.
The circuit had the
dc plug (power plug)
external battery connection
secondary battery

All these 3 parts are connect through 1 circuit board.

I think that something on the circuit fried.
If I attach the dc power cord , using some wires, to the plugs where the battery attach, I start smelling burning....the circuit fried somewhere.
This circuit brings the power to the lcd and to the other half of the camcorder. This is the reason why the camcorder does not turn on anymore....
the problem is that this peac costs 100 dollars and needs to be backorder.
If u want I have the service manual.
I would be glad to share it if u want
tx