Sorry I can't help on the amp. But I thought you were talking about this kind of Jet City weirdness.
OK, here's a puzzler. I plugged in my guitar and cranked up my Jet City. No sound. Oops. I check the obvious things (are my cords plugged in, volume up, not in standby, etc.). Nothing. I plug directly into the amp. Still nothing. Switch cords. Nothing. Power indicator is lit and the tubes are glowing. I crank the volume and gain. Then I can hear something, barely. It _sounds_ OK, just phenomenally quiet. Those settings should make me immediately deaf, but I can barely hear anything. I turned off the amph and called for my son (who thankfully brought my old '51 back from school) to bring his guitar down here. I turn the amph back on and plug his guitar in and am immediately greeted with loads of 60 cycle hum from the neck single coil. Everything is working fine. Hmm. Maybe my jack is going on my DK2M? So I plug that back in and everything works fine.
Any ideas what might cause this? I've never experienced anything like this with this amph. Is this a sign that the power tubes are on their way out? These are the stock Chinese tubes. I got the amph almost two years ago. If it is (heaven forbid) croaking, I did buy a two-year warranty on it at GC which ends February 15.
Axen: Jackson DK2M, Fender Deluxe Nashville Telecaster, Reverend Warhawk 390, Taylor 914ce, ESP LTD Surveyor-414
Amphen: Jet City JCA22H and JCA12S cab, Carvin X-60 combo, Acoustic B20
Effecten: "Thesis 96" Overdrive/Boost (aka DVM OD2), Hardwire DL-8 Digital Delay/Looper, DigiTech Polara Reverb, DigiTech EX-7 Expression Factory and CF-7 Chorus Factory, Danelectro CF-1 Cool Cat Fuzz
"I wish Imagine Dragons would be stuck in an Arcade Fire for an entire Vampire Weekend."--Brian Posehn
Sorry I can't help on the amp. But I thought you were talking about this kind of Jet City weirdness.
Steve Thompson
Sun Valley, Idaho
Guitars: Fender 60th Anniversary Std. Strat, Squier CVC Tele Hagstrom Viking Semi-hollow, Joshua beach guitar, Martin SPD-16TR Dreadnought
Amphs: Peavey Classic 30, '61 Fender Concert
Effects and such: Boss: DS-1, CE-5, NS-2 and RC20XL looper, Digitech Bad Monkey, Korg AX1G Multi-effects, Berhinger: TU100 tuner, PB100 Clean Boost, Line 6 Toneport UX2, Electro Harmonix Little Big Muff Pi, DuhVoodooMan's Rabid Rodent Rat Clone, Zonkin Yellow Screamer Mk. II, MXR Carbon Copy Delay
love is the answer, at least for most of the questions in my heart. . .
- j. johnson
Try turning the amph on and plugging in random cords. Touch the end of each cable with your fingers to see if you get a ground hum that way. This will eliminate the guitar being a factor.
Also, when they are cool, make sure all the tubes are firmly seated in their sockets. And finally, make sure the speaker leads are tight on the speaker.
Good luck and happy new year.
"No Tele For you." - The Tele Nazi
Ha! Tele-ish now inbound.
Thanks. For the first, that's why I had my son bring down his guitar. I guess it is still possible that I have a short in my guitar's wiring. I'll see if it happens again. I did try several different cords. There wasn't even any noise when I hit the cord against the jack or inserted/removed it, so that would seem to speak against the guitar being the culprit. I also checked the speaker leads (and the power cord). I'll check the tubes at some point here. I wouldn't _think_ any of them have become unseated since it has almost never left this exact position, but nothing's impossible.
Axen: Jackson DK2M, Fender Deluxe Nashville Telecaster, Reverend Warhawk 390, Taylor 914ce, ESP LTD Surveyor-414
Amphen: Jet City JCA22H and JCA12S cab, Carvin X-60 combo, Acoustic B20
Effecten: "Thesis 96" Overdrive/Boost (aka DVM OD2), Hardwire DL-8 Digital Delay/Looper, DigiTech Polara Reverb, DigiTech EX-7 Expression Factory and CF-7 Chorus Factory, Danelectro CF-1 Cool Cat Fuzz
"I wish Imagine Dragons would be stuck in an Arcade Fire for an entire Vampire Weekend."--Brian Posehn
Axen: Jackson DK2M, Fender Deluxe Nashville Telecaster, Reverend Warhawk 390, Taylor 914ce, ESP LTD Surveyor-414
Amphen: Jet City JCA22H and JCA12S cab, Carvin X-60 combo, Acoustic B20
Effecten: "Thesis 96" Overdrive/Boost (aka DVM OD2), Hardwire DL-8 Digital Delay/Looper, DigiTech Polara Reverb, DigiTech EX-7 Expression Factory and CF-7 Chorus Factory, Danelectro CF-1 Cool Cat Fuzz
"I wish Imagine Dragons would be stuck in an Arcade Fire for an entire Vampire Weekend."--Brian Posehn
Well, I've been away for several months now--haven't felt much like doing anything with guitar. Recently I decided to pick it up again. The problem is that my amph is doing the same thing again only this time it won't go back. I tried reseating all of the tubes. I swapped out the preamp tubes, then the power amp ones. I tried multiple guitar cords. I checked the connections in the cab. The only thing I haven't done yet is tried a different speaker cable, which I will this weekend. Any ideas, Tung? DVM? Bueller?
Axen: Jackson DK2M, Fender Deluxe Nashville Telecaster, Reverend Warhawk 390, Taylor 914ce, ESP LTD Surveyor-414
Amphen: Jet City JCA22H and JCA12S cab, Carvin X-60 combo, Acoustic B20
Effecten: "Thesis 96" Overdrive/Boost (aka DVM OD2), Hardwire DL-8 Digital Delay/Looper, DigiTech Polara Reverb, DigiTech EX-7 Expression Factory and CF-7 Chorus Factory, Danelectro CF-1 Cool Cat Fuzz
"I wish Imagine Dragons would be stuck in an Arcade Fire for an entire Vampire Weekend."--Brian Posehn
Have you tried with another guitar? Sounds like a strange thing.
My JC20H has not had one issue yet.
The Law of Gravity is nonsense. No such law exists. If I think I float, and you think I float, then it happens.
Master Guitar Academy - I also teach via SKYPE.
Yeah, it does the same thing with my son's Squier 51. Unfortunately the guy who did work on it before will be AWOL for a while. This happened the first time before he ever worked on it, so I know it's nothing he did.
Axen: Jackson DK2M, Fender Deluxe Nashville Telecaster, Reverend Warhawk 390, Taylor 914ce, ESP LTD Surveyor-414
Amphen: Jet City JCA22H and JCA12S cab, Carvin X-60 combo, Acoustic B20
Effecten: "Thesis 96" Overdrive/Boost (aka DVM OD2), Hardwire DL-8 Digital Delay/Looper, DigiTech Polara Reverb, DigiTech EX-7 Expression Factory and CF-7 Chorus Factory, Danelectro CF-1 Cool Cat Fuzz
"I wish Imagine Dragons would be stuck in an Arcade Fire for an entire Vampire Weekend."--Brian Posehn
Just tried the amph with a friend's 4x12 and his speaker cable. Same problem. Guess I'm amphless for a while.
Axen: Jackson DK2M, Fender Deluxe Nashville Telecaster, Reverend Warhawk 390, Taylor 914ce, ESP LTD Surveyor-414
Amphen: Jet City JCA22H and JCA12S cab, Carvin X-60 combo, Acoustic B20
Effecten: "Thesis 96" Overdrive/Boost (aka DVM OD2), Hardwire DL-8 Digital Delay/Looper, DigiTech Polara Reverb, DigiTech EX-7 Expression Factory and CF-7 Chorus Factory, Danelectro CF-1 Cool Cat Fuzz
"I wish Imagine Dragons would be stuck in an Arcade Fire for an entire Vampire Weekend."--Brian Posehn
I finally got it to a tech today. It turns out that a lug on the master volume was grounding ever so slightly on the chassis. Basically, it was like the master volume was almost completely off even when it was cranked. A simple fix but it took a bit to find. It cost me about $70, but it's working again!
Axen: Jackson DK2M, Fender Deluxe Nashville Telecaster, Reverend Warhawk 390, Taylor 914ce, ESP LTD Surveyor-414
Amphen: Jet City JCA22H and JCA12S cab, Carvin X-60 combo, Acoustic B20
Effecten: "Thesis 96" Overdrive/Boost (aka DVM OD2), Hardwire DL-8 Digital Delay/Looper, DigiTech Polara Reverb, DigiTech EX-7 Expression Factory and CF-7 Chorus Factory, Danelectro CF-1 Cool Cat Fuzz
"I wish Imagine Dragons would be stuck in an Arcade Fire for an entire Vampire Weekend."--Brian Posehn
Congrats!
Now rawk out!!!
The Law of Gravity is nonsense. No such law exists. If I think I float, and you think I float, then it happens.
Master Guitar Academy - I also teach via SKYPE.
Niice.
I love it when it's something simple and cheap.