Old transistors to cross: Bendix B-10383A & Fairchild SE 4002, SI(?) 170

[emrr]

Title says it all.  1965ish "Paris Bass Boom" amp came in for service today, and it's early SS.   I'm not turning up much useful online, and nothing in my data books either.  Works, but sounds like that germanium roar in the background.  If it were mine, I'd put an entirely different amp in the cabinet, but it ain't.  Has bitchin' roman numerals around the dials, rather than boring old english digits.  


(2) Fairchild SE 4002  In case I'm blowing the part #, there is also 536 on one, and 547 on the other.  I'm interpreting those as date codes.  Small signal, 2 on the front end it appears.   Maybe NTE199?  Also suggests NTE123AP, but looks doubtful.  

Fairchild SI(?) 170  Hard to tell if it's really an 'I' on this one.   Also 539 on this one.  Can't find a thing.  

(2) Bendix B-10383A  TO3 package outputs.  Looks like 6533 date code.  Only thing I come up with is NTE103A, which is the wrong package.  

If the NTE stuff is right, the Fairchild jobs are silicon.  May only need to replace the germanium power outputs to get it acceptable.   No budget here for a redesign.   I'm tempted to say "forget it", given the potential end satisfaction level.  

 

[mitsos]

I don't know if this is help or a red herring but I found some Bendix 2N1039 marked 10393 on ebay.  So maybe the full number on yours is 2N1038-3?  I found some reference to it being a germanium PNP power transistor. 

Nothing on the fairchilds though.

 

[dissonantstring]

hey doug,
saw a cross reference on this page for the Fairchild SE4002:
http://www.datasheetarchive.com/SE4002-datasheet.html
seems like you can use BC183, but have not checked exact specs of each.
i've used Fairchild SE4010s in big muff variants before and they are Si.

sorry, i'm not familiar with the others.
kind regards,
grant

 

[emrr]

Cool, thanks guys.

 

[joe-electro]

Just put one of these in there and be done with it...

http://www.national.com/mpf/LM/LM3886.html#Overview



Joe

 

[emrr]

that would be my idea if there was any money....

 

[Mr. Snoid]

Doug,

I have a few T03 Germanium power transistors I got from a CB store estate sale. I can't cross reference them to much... They are all WEP numbers, but you're welcome to some of them. I can get you specifics tonight, if you'd like.

Tod

 

[emrr]

Thanks for the offer Tod.  If you think of it, please send me some numbers.  I think I have a pile of random pulls from various part-outs I could try also.  I'll keep yours in mind for sure. 

 

[Mr. Snoid]

Doug,

Check your PMs. I found a couple last night.

Tod