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Power-up question

Discussion in 'Shock Brother's DIY Amps' started by HBamps, Oct 7, 2020.

  1. HBamps

    HBamps Tele-Meister

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    This may sound kinda silly but I often wonder about it. At home, I have my pedals and amp plugged into a power strip and for convenience, I keep the pedal board plugged in and the amp in the "on" position while using the power strip rocker to turn everything on and off at once.

    Anyone see how this could be damaging to turn the amp on and off this way? Electrically I don't really see the difference. The amp has a switch on the hot lead, I am not sure what's switched in the power strip.

    I just had a PT blow for unknown causes so it has me questioning my methods.....
     
  2. ThermionicScott

    ThermionicScott Poster Extraordinaire

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    I can't think of a problem. And you'd be saving wear and tear on the power switch. :)
     
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  3. sds1

    sds1 Tele-Afflicted

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    This was my thought, at worst it would be harder on the switch in the power strip.
     
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  4. corliss1

    corliss1 Friend of Leo's Platinum Supporter

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    Nope - nothing wrong with that at all. The amp doesn't "know" what is breaking the power - a switch on the amp, a switch on the power trip, a switched outlet, the circuit breaker. It either has it or doesn't. The way you turn it on and off won't help or kill a PT.
     
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  5. joealso

    joealso Tele-Holic

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    I've been doing exactly that on my home setup for years.
     
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  6. 100LL

    100LL Tele-Meister Silver Supporter

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  7. sds1

    sds1 Tele-Afflicted

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    EmWeAh, dan40, corliss1 and 1 other person like this.
  8. 100LL

    100LL Tele-Meister Silver Supporter

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    well it's not my article so I'm not going to defend it. and I'm all for learning.

    this thread will die a short death because there's not a lot of meat on the bone. I say hijack away.
     
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  9. King Fan

    King Fan Poster Extraordinaire Ad Free Member

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    tweedy_woodpecker, EmWeAh and sds1 like this.
  10. corliss1

    corliss1 Friend of Leo's Platinum Supporter

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    ooooh another standby switch thread!

    tl;dr - you don't *need* standby switches, ever.
     
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  11. 100LL

    100LL Tele-Meister Silver Supporter

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    That valvewizard article conveys much of the information as the sweetwater one. (it's more about startup capacitor protection than anything else). Although valvewizard lists "muting" as a pro while the sweetwater article says that is not a proper role for the switch.
     
  12. 100LL

    100LL Tele-Meister Silver Supporter

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    Dr Z says it's smart for solid state rectifier startup, and for the tech's convenience.

     
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  13. King Fan

    King Fan Poster Extraordinaire Ad Free Member

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    At heart, all amp threads are standby threads... :)
     
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  14. King Fan

    King Fan Poster Extraordinaire Ad Free Member

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    The Sweetwater guy and you say to use the standby on warmup. Merlin says not to use it at all.

    Sweetwater points out it was there to protect Leo's *low-voltage* filter caps during warmup. Merlin points out you shouldn't use low-voltage filter caps in your amp.

    Maybe we can agree: If your old vintage amp still has the original low-voltage filter caps, you should use the standby switch on warmup. But in that case, don't use the power switch afterwards... :D
     
  15. 100LL

    100LL Tele-Meister Silver Supporter

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    yea makes sense. I think a quick study has convinced me there's little to no point today in the switch at all (for the guitarist).

    although I guess if you take some opinions, it provides a tad bit of convenience when servicing the amp.
     
  16. RollingBender

    RollingBender Tele-Afflicted

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    ...and if the filter caps are that old, maybe not use the power switch at all????
     
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  17. corliss1

    corliss1 Friend of Leo's Platinum Supporter

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    ^this
     
  18. Wally

    Wally Telefied Ad Free Member

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    If you have a Bogner Ecstasy, not using the standby when powering down will allow you to count the number of relays as they shut down....POP, POP,....13 times. I use standby switches to shut down certain modern amps for this reason.
    Used properly, there is nothing wrong with a standby. It is not necessary to warm up the tubes since cathode stripping does not occur at the low voltages our amps use. It take 10,000 volts to strip the precious metals from the cathode. It might protect the circuit from voltage spikes. It is handy when changing speaker cabs.
    It can do non-catastrophic but gradual deterioration the tubes’ cathodes IF the amp is left in standby for long periods of time due to the occurrence of cathode poisoning.
     
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  19. HBamps

    HBamps Tele-Meister

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    Wow, thanks for all the responses! this forum is awesome!
     
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