#1
I have a Jet City JCA 20 head. It's the older toggle switch version with the blue light on the front next to the power/standby toggles. On occasion the light will randomly dim/flicker. I'm sure I'm on a good 120V circuit and the sound/power from/to the head does not seem to be affected. I'm assuming it's an LED. Is this normal behavior? Thanks.
#2
Have you tried contacting Jet City? Doug provides great customer service.
www.facebook.com/yourbadinfluence
#3
Quote by 8Len8
Have you tried contacting Jet City? Doug provides great customer service.

Agreed. JCA's customer service is top shelf. I have not contacted them yet but I will. I posted it up here just to see if by chance I wasn't the only one. There's no smoke coming out of anything the head works as it should and I'm 100% happy with the sound/tone...but having the light flickering/dimming is annoying. My extensive trouble shooting regimen has consisted of unscrewing the lens from the front of the cabinet to determine that it is in fact a LED type light. That's as far as I've dug into it. One way or another I'll figure it out and post up the solution. Stay tuned (figuratively AND literally)
#4
Quote by bsadowsky3031
I have a Jet City JCA 20 head. It's the older toggle switch version with the blue light on the front next to the power/standby toggles. On occasion the light will randomly dim/flicker. I'm sure I'm on a good 120V circuit and the sound/power from/to the head does not seem to be affected. I'm assuming it's an LED. Is this normal behavior? Thanks.

I have a Jet City 20 and it's doing the same thing. A far as I know it's nothing serious. You just need to replace the bulb
#5
This is actually a fairly common issue with the Jet City line, especially the 20's IIRC.

I use a 20 as my main amp and the light has flickered/worked sporadically for a few years now. It's something I don't care about, and if the company decided to cut costs by using a cheap light, it's fine with me because I care about tone much more than aesthetics.

I do remember folks on another forum posting about having success getting a replacement part by messaging Jet City's customer service. That's your best bet, and I'm guessing you'll probably have good results.
Quote by Zeppelin71
Umm. . .uh. . .your mom touched sjones' dick. YOUR MOM TOUCHED OUR GUITARISTS GENITALS IN A CAMPER AT A BIKER FESTIVAL! truth.
#6
Thanks for the replies. The JCA 20 is a great head, a perfect fit for me size/tone wise and I have no regrets with the purchase. The flickering/dimming of the LED had me concerned about a possible short/power interruption in the head. Now that I know that's not the case I'll more than likely live with it as-is.
#7
Quote by bsadowsky3031
Thanks for the replies. The JCA 20 is a great head, a perfect fit for me size/tone wise and I have no regrets with the purchase. The flickering/dimming of the LED had me concerned about a possible short/power interruption in the head. Now that I know that's not the case I'll more than likely live with it as-is.

I don't think I've had more than a handful of people notice the light issue on mine, and it's been that way for a good three years probably.

I think I may have mentioned this in a previous JC related thread, but it's worth repeating: the Jet City's are even better when you drop some new tubes in them. It's not an immediate necessity, the amps do sound good stock, however a quality set of tubes takes these amps to the next level.

If/When you start to notice your tone lacking a little bit in the bottom end, especially after a year or two of use, that's a sign your power tubes are starting to go.
Quote by Zeppelin71
Umm. . .uh. . .your mom touched sjones' dick. YOUR MOM TOUCHED OUR GUITARISTS GENITALS IN A CAMPER AT A BIKER FESTIVAL! truth.
#9
Quote by bsadowsky3031
Fortunately for me the guy I bought the head from had already swapped out the stock tubes for JJ's.


Definitely an upgrade from the stock .

If you have the chance though, and some extra cash to spend on some tubes, it's amazing how much difference mixing and matching (especially preamp tubes) makes in an amp. I forget my exact preamp, but I know I have a JJ in V1 with a balanced V3 which I believe is a Tung Sol, and I forget what's in V2.

As for power tubes, I LOVE the Mullard EL84 re-issues. I tried JJ's there, and I did like them, but the Mullard reissues absolutely nailed what I was after. Most importantly, they removed any "ice-pick" high end and sweeted up that end of the spectrum while also giving me a little more body overall.
Quote by Zeppelin71
Umm. . .uh. . .your mom touched sjones' dick. YOUR MOM TOUCHED OUR GUITARISTS GENITALS IN A CAMPER AT A BIKER FESTIVAL! truth.
#10
Quote by bsadowsky3031
Thanks for the replies. The JCA 20 is a great head, a perfect fit for me size/tone wise and I have no regrets with the purchase. The flickering/dimming of the LED had me concerned about a possible short/power interruption in the head. Now that I know that's not the case I'll more than likely live with it as-is.


ya know that jet city sounds like my $25 practice amp. i don't know why you would waste that much money on one.

Okay maybe i am trolling
WTLT 2014 GG&A

Quote by andersondb7
alright "king of the guitar forum"


Quote by trashedlostfdup
nope i am "GOD of the guitar forum" i think that fits me better.


Quote by andersondb7
youre just being a jerk man.



****** NEW NEW NEW!
2017-07-07 2017-07-07 Update and a Chat On Noise Constraints *** NEW FRIDAY 7/7
2017-04-13 RUN AWAY from COMPUTERS!!! TCE? RANT ALERT!!!
2017-03-02 - Guitar Philosophy 1001- Be Prepared For the Situation (Thursday 2017-03-02)
2017-02-21 How to Hot-Rod the Hell of your Stratocaster for $50! (Tuesday 2017-2-21)
Resentments and Rambling from a Guitar Junkie
---> http://trashedengineering.blogspot.com/
#11
The light on my JC20 went completely out months ago. Amp still works perfectly. Just watch out, I left mine on overnight once thinking it was off. On standby but still.
#12
Quote by trashedlostfdup
ya know that jet city sounds like my $25 practice amp. i don't know why you would waste that much money on one.

Okay maybe i am trolling


Over a good weekend I can physically process $100 worth of alcohol through my system. I went on the wagon for two weeks = Used JCA 20.

I'd really like to have a Soldano but that would mean I would have to join AA.
#13
There is another way to get a Soldano sound without having to go on AA. Grab a used Randall RM100 and throw a couple of these into it.

http://www.jadedfaithmods.com/sl-od100.html

SLO's cost like $5K here so that's how I do it.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
#14
Quote by bsadowsky3031
Over a good weekend I can physically process $100 worth of alcohol through my system. I went on the wagon for two weeks = Used JCA 20.

I'd really like to have a Soldano but that would mean I would have to join AA.


there was a reference to this (LP thread).
WTLT 2014 GG&A

Quote by andersondb7
alright "king of the guitar forum"


Quote by trashedlostfdup
nope i am "GOD of the guitar forum" i think that fits me better.


Quote by andersondb7
youre just being a jerk man.



****** NEW NEW NEW!
2017-07-07 2017-07-07 Update and a Chat On Noise Constraints *** NEW FRIDAY 7/7
2017-04-13 RUN AWAY from COMPUTERS!!! TCE? RANT ALERT!!!
2017-03-02 - Guitar Philosophy 1001- Be Prepared For the Situation (Thursday 2017-03-02)
2017-02-21 How to Hot-Rod the Hell of your Stratocaster for $50! (Tuesday 2017-2-21)
Resentments and Rambling from a Guitar Junkie
---> http://trashedengineering.blogspot.com/