Restore of the Week Valco/Supro

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by Trout, Feb 28, 2012.

  1. Trout

    Trout Member

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    So, local guy drops off a gaggle of amps he wants restore, all of them non-functional for various reasons.

    So starting from oldest to newest I decided this one is up for 1st shot.
    A mildly assaulted Valco.

    Nice handle huh?

    [​IMG]

    he said its a 1951 based on serial number.

    [​IMG]

    Chassis has a few scuffs but no rust. 6SL7, 6V6GT & 5Y3
    [​IMG]

    Nice old Rola speaker, looks clean & dry but leads were broken off.

    [​IMG]

    Someone " Tired " to add a 3 prong cord however they left the " death cap " installed & the technique has a bit to be desired on attaching the ground and stress relief. :jo


    Other than that, it is basically not been molested much.

    [​IMG]

    Transformers check out fine but most certainly this amp will be getting a recap and resistors spec'd out.

    Fun Fun Fun ;)
     
  2. TweeDLX

    TweeDLX Member

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    Thanks for sharing this Trout! What a sweet little nugget this is! I look forward to seeing the entire batch as you fix them. Going to do some before and after shots?
     
  3. Trout

    Trout Member

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    Yep, that's the plan, he has 13 amps for me to fix-up.
    He basically wants these all set up as players but as era correct as possible.
    I'll likely spend more time finding repro parts than soldering though haha
     
  4. Dr. Sleepy

    Dr. Sleepy Member

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    Very neat, I will subscribify.
     
  5. corn husk bag

    corn husk bag Silver Supporting Member

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    Yes, I am subscribing to this too!

    Steve
     
  6. hank57

    hank57 Silver Supporting Member

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    I have the Valco Oahu that is on consignment at the music store here. They're sweet little amps. Didn't want to fix it up but it still works fine right now.

    This might inspire me to bring it home and re-cap it.
     
  7. smolder

    smolder Gold Supporting Member

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    Very nice. I'd love to have a single ended Valco amp ; ) Very cool stuff.
     
  8. Trout

    Trout Member

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    The only nightmare part is the 10-10-10 can cap in the PS, I may end up re-stuffing it with regular caps.
    I just dropped him an email about it.
    I mean sure I could stick in a few axials and leave the old can on there, but you know in 10 years you'll read a thread about some hack putting axials in an old valco :sarcasm

    The can cap is one of the skinny 1" diameter ones which nobody makes.
    I could use a CE 20/10/10/10 µF/ 450 VDC and punch it to fit, but hey, thats the owners call at this point.
     
  9. vibrasonic

    vibrasonic Member

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    :huhLove the mother of kitchen drawer handle
     
  10. Trout

    Trout Member

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    Yep, how brutal, sure those split rivets are a PITA to remove but hey, the original brackets are still there and they are even spaced perfectly to fit common fender replacement leather.

    BTW, the kitchen handles Phillips screw heads are all stripped.
    Makes you wonder WTF people are thinking :nuts
    I guess it matches the solder job he did on the speaker & cord though.
     
  11. camatillo

    camatillo Member

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    Stripped screw heads just scream out 24 volt Dewalt power drill maxed on speed control trigger
     
  12. kevmin

    kevmin Supporting Member

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    On those stripped screws, try a small cut-off wheel on a Dremel to make the heads slotted. Then they should come out pretty easily.
     
  13. Trout

    Trout Member

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    Eh, the screws are no challenge really, been in cabinet making for 30+ years.
    I just look at stuff like this and say WTF.

    I got the green light to make a nice player out of it, only part I needed to order was the can cap(appearance request).

    I have one of those vintage Mohawk cabinet touch-up kits with the correct color burn in filler sticks so the handle hack screw holes will be barely visible.

    One think that I REALLY hate is the grill cloth, ugly, tightly woven, and not very transparent. But hey, its not mine so I just do what he wants.

    I figure maybe another 8 days it will be done since it has to wait for parts to arrive.
     
  14. michael stuart 57

    michael stuart 57 Member

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    What else did your client have laying around ?
     

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