Gary, According to the Rodgers Tech website -- these are all equivalent parts: 2SD555 97SE101 2N4347 2N4348 And cross-reference to: GE-14 HEPS7000 SK3947/388 SK3036 Should be able to find something in this list -- let me know if you need further assistance... Best regards, Jerry Akers On Tue, Sep 22, 2009 at 7:35 PM, G L Jordan <jsbptech@xxxxxxxxx> wrote: > Friends, > I have a Columbia 100 with a defective power transistor PART # 97SE101 > (7351) . > Unfortunately all the web searches have failed to find a supplier with this > part. Have any of you found a parts house for these older pieces? > Gary > > >