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Thread: Another Deluxe Reverb quandry, must all my repairs be strange?

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    Supporting Member Randall's Avatar
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    Another Deluxe Reverb quandry, must all my repairs be strange?

    1973 DR with a blackface "Fender Electric Instruments" front panel and a "Fender Musical Instruments" period correct back panel 1973 stamped inside the chassis, date codes agree.

    The tube chart identifies it as an AA763, but with a 12AT7 in the tremolo V5 slot. First, I have never seen a 12AT7 as a trem oscillator, and all the schems I have ever seen call for a 12AX7. Second, from what I can gather from fenderguru.com, the AA763 ceased in 1967.

    So assuming the front panel is not correct, do I also have a bogus tube chart? Perhaps with an error? Anyone ever heard of this?

    Click image for larger version. 

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    It's weird, because it WAS working fine.....

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    Old Timer Leo_Gnardo's Avatar
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    I'd have to conclude the front panel isn't original, it must either be a duplicate of the "electric" era panel. Or was swiped from a Deluxe Reverb of that period, maybe a "parts car". Also, I've never seen an AT used in the vibrato circuit. Which makes me think that tube chart is bogus. In the photo it looks a bit too new & clean for its age. The printing looks a little odd as well. Hope that's the end of the jiggery-pokery you find in there.

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    Supporting Member TomCarlos's Avatar
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    And my guess is that someone made that tube chart... Compare it to those you find on the net.
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    Lifetime Member Enzo's Avatar
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    I vote the chart went in when the front panel went in.

    I agree with the printing thing. It looks like a low rez scan or even a tracing. The lines have a crude hand drawn-ness about them. Or maybe even a tracing of a photo of a tube chart. Maybe so they could edit it. Look at how crude the tube pins are drawn. Now compare to a real one:
    https://www.ebay.com/itm/Vintage-Bla...-/153058389228

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    Tube chart looks very off.

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    Faceplate is a repro. Tube chart is a really bad forgery. I like how it has 6L6 scrstched over the 6V6. I'd just treat it like a 73 DR. People will go to insane lengths to try to pull one over on someone & take advantage of ignorance. Deus Ex Machina & a bunch of other Latin stuff here.

    Jusrin

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    Don't forget the joker g1's Avatar
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    That's funny. '6V6GC', and three 12AT7.

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    "Everything is better with a tube. I have a customer with an all-tube pacemaker. His heartbeat is steady, reassuring and dependable, not like a modern heartbeat. And if it goes wrong he can fix it himself. You can't do that with SMD." - Mick Bailey

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    Supporting Member Randall's Avatar
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    "I like how it has 6L6 scrstched over the 6V6"

    I didn't even notice that. Phony for sure.

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    It's weird, because it WAS working fine.....

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    That's pretty stupid, I'm sure you could probably find a clean version of the correct tube chart somewhere.

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    Old Timer Leo_Gnardo's Avatar
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    Let's have a look at the insides - see if it's one of those phony "Fender" amps marketed in the Far East during the VietNam era. FWIW a customer bought one such amp a few years back. It was about the size of a Deluxe Reverb, but the face plate said "Showman." Inside, it was a pretty nice ptp-constructed copy of a brown Vibrolux & worked perfectly well once some basic maintenance was done. Not bad for a $50 garage sale find.

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    Enjoy. Every. Sandwich.

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    I had one of those "Navy" amps, brought home by sailors, kind of Bassman like. Fascinating combination of decent work, and make-do scrappiness, like the hand folded chassis.

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    "Thermionic Apocalypse" -JT nickb's Avatar
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    Quote Originally Posted by Enzo View Post
    I vote the chart went in when the front panel went in.

    I agree with the printing thing. It looks like a low rez scan or even a tracing. The lines have a crude hand drawn-ness about them. Or maybe even a tracing of a photo of a tube chart. Maybe so they could edit it. Look at how crude the tube pins are drawn. Now compare to a real one:
    https://www.ebay.com/itm/Vintage-Bla...-/153058389228
    ..and the 6L6 changed to 6V6, badly.

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