Hack jobs

Discussion in 'Tube Audio' started by s-petersen, Jan 12, 2017.

  1. s-petersen

    s-petersen Scott Subscriber

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    [​IMG] I would like to start a thread with pictures, on hack jobs, there is currently one on the auction site, a Dynaco Mark III, it's like what were they thinking? There are no driver tubes,20 amp (or so) fuse.
     
    Last edited: Jan 12, 2017
  2. knockbill

    knockbill Addicted Member

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    Couple pics of the HK when I got it,,, partial recap!
     

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  3. gadget73

    gadget73 junk junkie Subscriber

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    No pics, but I had an old CB that someone had "re-capped". It was 3 radial electrolytic caps taped together and sort of hovering over the hole through the chassis where the original cap was installed. No clue how that didn't short out.

    On my 1939 Philco, one of the filter caps had been replaced with an axial under the chassis. The ground end was connected to the antenna ground terminal on the back which only actually tied to chassis ground through a little swing-in jumper.
     
  4. knockbill

    knockbill Addicted Member

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    More of a hack storage job,,, RCA PA amp, with original schematic!!!
     

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  5. Ttech

    Ttech Grand Poobah Subscriber

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    Oh man, that one's a mess. The only things worth keeping on it are the chassis and the transformers.
     
  6. peterh

    peterh AK Subscriber Subscriber

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    It zero reason to bid on this as brand new MkIII may be purchased anyday.
    The only reason to buy an old amp ( in my opinion) is that new ones are unavailable or vastly more expensive)
    In addition this one looks like mr handyman has been there. Beware!
     
  7. maxhifi

    maxhifi Super Member

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    Looks like he gave it a bias meter, solid state rectifier, triode connected outputs and an octal driver circuit with expensive caps and resistors. Perhaps a lack of finesse but maybe it aounds good! Realistically a new filter cap and driver board could fix it up.
     
  8. Dave451

    Dave451 AK Subscriber Subscriber

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    I have been lucky enough not to purchase any hacked up audio gear (been pretty careful, too). The worst I've gotten is a ham rig; one of a pair I got "two for the price of one" to restore. The two high voltage filter can caps (900V!) had been replaced with a couple of axials taped together and hanging by their leads under the original hole in the chassis. A CB'er had converted the rig to "high power" operation by re-wiring the power supply and eventually burned up the output tubes, the aforementioned HV capacitors and some of the components in the power amp. He had also messed with the band switching to get it to work on the CB bands. It took a little detective work, but I got it all straightened out and working properly. Some of this stuff just breaks your heart, especially the 'bad storage decisions' like the post above. Very nice restore, by the way!
    Dave
     

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  9. Brice

    Brice AK Subscriber Subscriber

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    At least it has a brand new fuse holder... A keeper :)
     
  10. HyKlas

    HyKlas AK Subscriber Subscriber

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    Guess I'll have to put my Citation II in here... Bought this as rebuilt but I knew better after shining a light through the bottom plate. Instantly saw it was a hack job but the price was okay. Last photo is a before an after once I did a little of my own rebuild...

    Wish I would have saved the photos from the pair of Eico HF-22 amps that were offered for sale by the same "tech". They were even worse. If you've ever seen one, you know it's pretty sparse underneath. There was so much packed in there you could hardly tell what anything was.
     

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  11. arts

    arts Super Member

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    Oooh,I spy with my little eye: 6146's!! Nice amp John:)
     
  12. Palustris

    Palustris Well-Known Member

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    bat_bias1.jpg

    I don't remember which amp this was in, but it is one way to do battery bias!
     
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  13. Brice

    Brice AK Subscriber Subscriber

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    Hooo, beautiful :rflmao:
     
  14. gadget73

    gadget73 junk junkie Subscriber

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    Wow, thats special. Nice insulator too.
     
  15. x3workshop

    x3workshop AK Subscriber Subscriber

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  16. invaderzim

    invaderzim Active Member

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    The farm boy in me appreciates the design of that one.
     
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  17. arts

    arts Super Member

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    Oh, that's a winner!

    :rflmao:
     
  18. Lavane

    Lavane AK Subscriber Subscriber

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    Right? Thats a quick, almost finished with harvest get it done fix for sure right there. Then a whole winter to forget about fixing it right. :D
     
  19. x3workshop

    x3workshop AK Subscriber Subscriber

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    My dad used to do temp repairs like that all the time and just forget about going back in. Luckily they were all temp use items.

    After he passed we cleaned out his lab and started giving them "Death Trap" designation numbers. I think we got to 20 or so when we stopped. No farmer, but a very well respected EE with many patents. Go figure. :no:
     
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  20. 63pontiacgp

    63pontiacgp "Tubes Smell Good" Subscriber

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    Some of these might not appear professional but just might be safe, secure, and operational.

    Mike
     
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