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Re: Pilot light on amp

Posted: Sun Feb 28, 2010 5:45 pm
by Bellyheart
Take it to the DIY forum. I don't know, but I do know I like your Sovtek, I play a Mig-50 and love it. Now if I could get a matching cab...

Re: Pilot light on amp

Posted: Mon Mar 01, 2010 12:22 am
by smallsnd/bigsnd
next time you take your amp to your tech, just have them dim the bulb. it should be a super simple arrangement... probably just a resistor in series from the power supply - they can just snip it out and pop a larger value in there? i can't see them charging you more than $5-10 if they're already working on the amp. not sure without seeing the amp schematic, though...

Re: Pilot light on amp

Posted: Mon Mar 01, 2010 11:20 am
by smallsnd/bigsnd
looks to me like it's powered directly from the transformer via the 6.3v AC tap. prob easiest to just ask your tech...

Re: Pilot light on amp

Posted: Tue Mar 02, 2010 5:23 pm
by Mark
smallsnd/bigsnd wrote:looks to me like it's powered directly from the transformer via the 6.3v AC tap. prob easiest to just ask your tech...


If you notice it just says "6.3 VAC to V2,V3,V4,V5, LAMP"
This leads me to believe they didn't bother to include the lamp with it's resistor on the schematic (which isn't that bad). There is bound to be a resistor in series with the lamp, or else it would eat too much current (the lamp would overheat and burn out). Open that shit up and look at the lamp. See what it's connected to if there isn't a resistor actually on the thing. See where the wires lead! There ain't no way to learn other then getting your hands dirty (just be careful, tube amps can kill you if your an idiot and blah blah blah youve heard it a billion times)

Re: Pilot light on amp

Posted: Thu Mar 04, 2010 9:05 am
by smallsnd/bigsnd
^^^^ just stay away from capacitors... they can kill you.
and make sure it's unplugged.

but yeah, if there's a resistor in series with the pilot light, simply measure it with a multimeter or look up the color code: http://www.musicfromouterspace.com/Elec ... Chart.html ...or just post a pic of the resistor/write what the colors are and we can help you out. all you need to do is raise the value of that resistor - i would say try doubling the value since it is super bright - so if you have a 4.7k on there, clip it out and put it a 10k or so. one last thing, make sure that your resistor's wattage is high enough or else you can burn it out.

Re: Pilot light on amp

Posted: Fri Mar 05, 2010 9:07 pm
by Mark
smallsnd/bigsnd wrote:^^^^ just stay away from capacitors... they can kill you.
and make sure it's unplugged.

but yeah, if there's a resistor in series with the pilot light, simply measure it with a multimeter or look up the color code: http://www.musicfromouterspace.com/Elec ... Chart.html ...or just post a pic of the resistor/write what the colors are and we can help you out. all you need to do is raise the value of that resistor - i would say try doubling the value since it is super bright - so if you have a 4.7k on there, clip it out and put it a 10k or so. one last thing, make sure that your resistor's wattage is high enough or else you can burn it out.


Chances are it's much higher than 4.7k (because it's a pilot lamp and not an LED) but yeah, pretty much this guy's got it right. Just for the hell of it, go for, like 2W resistors. It's overkill but it won't cost you much more and you'll be on the safe side.

Re: Pilot light on amp

Posted: Sun Mar 07, 2010 12:54 pm
by bdunlap
Unrelated, but how do you like that Sovtek amp? And how much did you pay for it?