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Can i mix an hg with a dei?

Discussion in 'Amplifiers' started by groundwire, Jun 28, 2020.

  1. groundwire

    groundwire Well-Known Member

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    Ok so i have this texas star sweet sixteen, its about 1yr old and one of the dei transistors has failed. The other 7 are just fine. I cant seem to find any new dei transistors, so can i just put a hg in its spot and call it good? If i have to do all 8 matching etc forget it. The amp will be scrapped.


     
    Tokin likes this.

  2. 2NC995

    2NC995 DAN

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    Maybe you could try a want ad here for a DEI? There’s got to be some floating around out there.
     
  3. Tokin

    Tokin 42Zero Tampa

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    Contact Gatekeeper 1883gotdown on youtube. He is a dei distributor.
     
  4. Tallman

    Tallman W9WDX Amateur Radio Member, KW4YJ EXTRA class

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    The DEI transistor will need to be beta matched. It is better to replace them in pairs.
     
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  5. 2NC995

    2NC995 DAN

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    I’ve mentioned a few times on the board that I don’t think Texasstar matches transistors.

    No one wants to bite, lol. Just kidding, (but your thoughts on that would be welcome).

    Anyway, he could pull the other and test it, and the seek a replacement with a comparable value. Been done here many times.
     
    Shadetree Mechanic and Tallman like this.
  6. Tallman

    Tallman W9WDX Amateur Radio Member, KW4YJ EXTRA class

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    I would never replace just one transistor of a pair unless I knew for sure what the beta was for the surviving transistor.
     
    Robb likes this.
  7. 2NC995

    2NC995 DAN

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    Ok. LOL.
     
  8. groundwire

    groundwire Well-Known Member

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    Ok, guess i will change out the pair. Then kick this thing down the road.
     
    Tokin likes this.
  9. Shadetree Mechanic

    Shadetree Mechanic 808 On The North Side of Dover

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    Change out the pair then run it. Can't be worse than what was in there.
     
    Tokin likes this.
  10. Ranch55

    Ranch55 Well-Known Member

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    Well, if you get ready to scrap the amplifier because of the transistors, let's talk.
    I would take if off your hands and probably put some Toshiba's in it.
     
  11. Crusher

    Crusher Well-Known Member

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    DEI and Toshibas Tune a lot different. So the entire amp will probably have to be retuned.
     
  12. groundwire

    groundwire Well-Known Member

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    I cant even find dei's online. Ebay but no thanks. Who sells em?
     
  13. 999

    999 Well-Known Member

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    Tokin likes this.
  14. 543_Dallas

    543_Dallas Sr. Member

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    If he finds a dei or two what are the chances they will match the other pills well enough to run? I haven't played with them.
     
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  15. Tokin

    Tokin 42Zero Tampa

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    It doesnt sound like a good recipe to me.
    If it were me id sell it as is and cut my losses or repill it in hg C series and sell the dei's. Ive been hearing good reports from the hg c series 2879.
    Sucks when this happens and even more so now that the supply is spotty.
     

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