Help with dead Dod Phasor 201

[multiaudun]

Hi!

I found this old Dod phasor in my uncles attic. It was all ripped apart, but when I reassembled it worked just fine.

Untill I managed to reverse the battery that is. Now the thing is dead. Which parts are likely to be blown by reversing the polarity of the battery?

The schematic to this unit can be found here:
http://www.geocities.com/j4_student/mxrdodphase.gif

However mine is different. It has one IC instead of the two in this schematic. Some of the resistors are different calues and the transistors are different. However, most of the circuit is the same as this schematic.

Any help is appreciated!

[Vsat]

Most likely the chip is blown. They don't handle reverse voltage very well. Probably a fairly common and inexpensive chip anyway.
Mike