"Barry" wrote in message
ups.com...
Thank you.
There are 2 lines of number on the chip somwhat like this
LA7830
2C 4

Pardon my ignorance.
Should I completely remove the old solder before resoldering?
I'm relutant to do a lot of soldering for fear I'll mess up more than I
fix, but if necessary I'll do some practicing.
I can't locate the resistor R3209.
There is a space on the board labeled R3207, but there isn't a resistor
there.


Here's the datasheet
http://pdf.alldatasheet.com/datashee...YO/LA7830.html


Removing the old solder isn't really nessesary in most cases, but it can't
hurt to do so if you have the tools. You will probably get better joints in
the end if you do. Oh and make sure you're using rosin core solder for
electronics, not acid core plumbing stuff.