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Electronics => Beginners => Topic started by: Davetheampguy on May 17, 2018, 06:40:11 pm

Title: Help Identifying to39 transistor...private labeled.
Post by: Davetheampguy on May 17, 2018, 06:40:11 pm

Long shot.  Working on a Rivera Sedona Lite acoustic tube amp.  Second channel is out.  Signal traced second channel and found
shorted transistor..the first one in the channel.  Easy fix...if I can ID the transistor.  to39 i think.

Says Rivera 104-010  0745.  Guess its a jfet?   I have scoured for a schematic.  q103 on the circuit board.

Please help.  Have had no response from Rivera.

Title: Re: Help Identifying to39 transistor...private labeled.
Post by: strawberry on May 17, 2018, 07:13:55 pm

Any JFET should work if DC values are close enough

Pull out values from schematic easy

J104 (2SJ104)