How to Fix Noise Problem on Fender HotRod Deluxe MKIII
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- čas přidán 30. 01. 2021
- "Frying Egg" sound coming from your speaker? It's a common problem. The fix can be easy or very hard. In this case I got lucky and the fix was quick. Follow me as I show you how to diagnose where this annoying sound is coming from - and how to fix it. Applies to many valve amps, not just this one.
A good video detailing basic troubleshooting for a crackling amp. Nice to see a hands-on diagnosis!
Thank you so very much Mr. Smith for all of your great videos. You have real talent for explaining as you work. This one in particular guided me to perform a proper diagnosis on a Mesa Dual Rectifier "Blue Angel" 4-10 that suffered a house fire and has this same sort of noise problem. I have done the valve removing one at a time as you show. Low and behold, the noise issue went away. Only one of five of the 12ax7's was okay. I am replacing the whole quintet and hopefully, this amplifier will come back to life. Also, I have a Marshall mosfet 2-12 100w model 5213 that suffered the fire as well. Watching your awesome and understandable videos, I took it all apart, cleaned all of the carbon residual grime, replaced the smoothing caps, a few pots, all new jacks and put in a pair of new Celestion 12' midnight special speakers. Happy to say hooray! Works beautifully. I am an avid subscriber to your channel and will spread the word to all. Cheers to you from Southern Oregon U.S.A. Thank you again, and it's time for a cup of tea.....
Hi Duane I'm pleased the video was helpful. Well done for getting the amps working again!
Great video. I recently purchased a second hand blues deluxe which had the same noise. A search brought up your video and with a change of the v2 valve, the problem was fixed. Saved me a few quid from visiting my amp tech. Cheers Stuart :)
Excellent thanks James
I truly thank you, My hot rod deluxe crackling like that. Removed the V1 tube.. boom. That was the ticket. I also happen to have a 12ya7 in my valve stock.. I also learned how to bias today, Also un-soldered and treble pot and put a new one in.. (Yes I did discharge the the filter caps.)
Awesome well done Jim!
Fab tutorial video as ever! I also learnt I could swap out my pre-amp valve for a 12AY7 to tame my hot rod (I have been using a Dr Watson in teh Fx loop). So I've now learnt 2 things from 1 instructional video - win win 🙂!!!
Glad you liked it thanks Rob
Thank you … awesome video … very useful
Cheers Rick.
Such a simple, yet useful system for chasing down faults in a tube amp. Maybe if they had put transistor sockets on all the solid state stuff... :p Hope you got your second shot by now. Stay healthy Stuart.
Yes all double shotted now thanks!
Hi Thomas That could be caused by quite a few things really. Try a tube swap first as it's quick and simple. If you're anywhere near Berkshire I'd be happy to take a look for you.
I tank your experience ❤
I've replaced two ECC83 tubes with this frying bacon sound. They sounded great right up until that happened. I believed they might have been damaged during delivery by a UPS guy who dropped the package hard by my door. Both were at the V 1 socket.
nice video, this guy is good
You're too kind Jeffery!
Great video. Have been having hum in the effects loop when in use on this same amp. The pedals are on battery power so I know the noise isn’t coming from the wall. When the effects loop is not in use the noise disappears or when the cables in not plugged into the effects loop. Wonder if it might be a bad tube?
Hard to diagnos without seeing it but that sounds more like something to do with whatever you are plugging in. It won;t be the valve. Try plugging a short jack-jack from FX send to FX return. If no hum, it's not the amp.
hi Stuart, great video. i have a fender hot rod deluxe (2002) with a low volume output - high distortion problem, if you get one in with similar problem please make a video, i want to learn how to fix it!
just to add, i've tinkered inside and replaced the leaking big capacitors and was careful to discharge them first
Same problem. Normally a very loud amp won’t crank to keep step with band volume. Nasty sizzly distortion with no gain and low volume.
I recently bought a deville very cheap with that problem, and the solution was that the speaker cable was in the wrong jack. Internal speaker jack (the left one) must always be occupied first or it will shorten signal to ground.
Interesting. It's a relatively common problem but I have to confess to not knowing EXACTLY what it is inside the valve that causes this.
My HR has more of a loose rattle without finding anything loose. I did tap on valves and V1 preamp had a tonic feedback so I think it’s microphonic and will change but I doubt it will fix rattle which sounds systemic.
Yes that could be a number of things. It could be mechanical, or even dry joint on an HT cap!
@@stuartukguitarampguy5830 it seems that rattle whatever it is sounds like a tube metal thing and appears to be more common than not on FHRs.
Hi Stuart - subscribed and really enjoy your videos. I have a question: recently replaced a Groove Tube 12AX7 with a new Groove Tube 12AT7 in V1. It sounded great for a few hours then the 12AT7 tube went microphonic. Should I use a different brand tube or a different tube altogether in V1? The amp is a Hot Rod Deluxe IV. Thank you
Hi Chris I'm glad you are enjoying the channel. DOn;t use an ECC81 in that position. I assume you are lloking to tame some gain? If so, use a 12AY7. Stuart
@@stuartukguitarampguy5830 Hi Stuart, thanks so much for your response. Yes, I’m trying to tame the gain/volume. I’ll go with the tube you recommended. Kind regards from Texas!
@@chrisspeegle74 God's Own Country!
@@stuartukguitarampguy5830 One other question, would a 12AU7 also be okay for V1? Thanks!
@@chrisspeegle74 12AT7 and 12AU7 are NOT low gain versions of ECC83 (12AX7) they are completely different valves which happen to have a lower gain than the ECC83. So in many amps they'll 'work' as gain tamers but they are not ideal. If you want to reduce gain use a 12AY7 wiich is a low gain version of the 12AX7.
It had that am radio white noise sounding thing in the beginning
any advise on how to troubleshoot the crackling/popping noise on this amp when guitar is played louder?
Trcky to diagnose over the internet but if you're getting brteakup or bad distortion when playing very loud it could be the speaker.
Hello. I have a HR DeVille that have distorted sound on clean channel. Doesn't drop volume. I plugged on the power amp in of the fx LOOP and the distortion is the same. I only could sight a leaking capacitor C45.
Hi Okay well it sounds like it is the power amp section as jacking in to the FX return eliminates the preamp side of things. The problem is, this could be a LOT of things and I cannot diagnose it over the internet. It's looking like you'll have to find an amo tech in your area. Good luck.
@@stuartukguitarampguy5830 thank you so much for your answer. Plate resistors and screen grid resistors checked. Is a way to test a power tube?
@@alga1309 Not easily I'm afraid. The simplest way is just to put in a different tube if you have one.
Hello, I’ve got a fender hot deluxe. I’ve had it for 12 years and recently I’ve had volume problems. Usually it’s loud at about 2 but now I have to crank it all the way to get any sound out of it. I have taken it to an amp specialist but it’s all of sudden just decided to go back to the way it was. The master volume works with a the foot pedal it came with but it’s just the main volume channel that I’ve had problems with. Any advice? Thanks.
Hi. It could be many things of course. Next time it happens, connect the FX SEND and RETURN with a short jack-jack lead. If the sound comes back, those jacks need cleaning with some contact spray.
@@stuartukguitarampguy5830 Hi thanks for getting back to me. My amp knowledge isn’t that great so you might have to be more specific. I’ve used a short lead in to the master volume bit with the pedal, I’ve also tried the short lead in the main channel but I still have problems with the volume. The guy I took it to said he gave it a good clean because I told him that I’ve never bothered to take the back of it and clean it (never occurred to me!) Do I need to change the tubes?
@@sumbl3b0b Hi Rob I can;t remember if this amp has an FX SEND and RETURN jack on the rear. If not, ignore my suggestion. But if it has, just connect them together with a jack-jack lead and see if the problem goes away.
Thx, I did not know one could pull the valves out while the amp is on. Isn’t it dangerous putting your hands in there ? Should you not be wearing gloves or something ?
As long as you don't stick your fingers in places they shouldn't be, it's ok. Also, don't forget I'm an amp tech with decades of experience. It';s a bit ike saying to a motor mechanic "be careful, there are moving parts there you know, and you could get your hand trapped." He'd give you an old-fashioned look!
so mad...to work with hands directly into high voltage devices,,,with high voltage on! rock n' fuckin' roll, man! You can heal your covid better, this way ;)
Hi Mark We techs have a top secret weapon. It's called "we know what we're doing..." :)
I would have figured the valves would be too hot to pull out live with your bare hands?
Aren't those valves hot to the touch?
The preamp valves are usually ok, it's the power valves that are really too hot to handle.
@@stuartukguitarampguy5830 they even made a song about it ! czcams.com/video/D8VKQUm0OXQ/video.html
I don't mean to question your expertise, but shouldn't you, as a definitive step, taken the new tube out, and put the old tube back in? Just to make sure it wasn't simply some oxidation or corrosion on the tube pins?
That's unlkely to cause the symptoms the amp had tbh. Also, I don't show every single thing I do as the vid would be too long, so it's just possible I did that.
@@stuartukguitarampguy5830 Thanks Stuart. I'm an old man, but I'm still learning. I have an HR Deluxe III in my shop right now. Works perfect, accept that it sounds like a 1-watt amp instead of 40. It's NOS, never used. Straight from the showroom floor. If you have any advice, I'm all ears.
@@artiehall7708 Hi Artie, SO hard to diagnose over the internet as you can imagine. If it's very low volume try the FX SEND and RETURN jacks (just use a jack-jack lead to link them). Long shot but it's simple to try. Check the HT caps for leakage. Not sure how knowledgeable you are but check the HT with a jeter (across one of the large electrolytics.
@@stuartukguitarampguy5830 Thanks again Stuart. I'll try that first. Over a half century of being a tech, so no problem there. Hoping this is something simple.
@@artiehall7708 Good luck!
How's it going with that jab?
I would never buy another one of these amps. I own one, I basically have rebuilt the entire amp. It was like a domino effect, fix one problem and 3 more problems would arise. These amps are not built with quality parts, hence the price point. But if Fender would spend literally peanuts more and price the amps say $50 more they could sell you an amp with the right quality components and the amp would last years. Stay away from Hot Rods unless your planning on spending a lot of $ at your tech. In the end I could have bought a quality amp for what I put into my Hot Rod. I do like the amp... now. But the frusteration and money I spent was NOT worth it.
I couldn't agree more.
Curious as to what you’d recommend instead. My hot rod deluxe sounded great (until it didn’t). Having issues getting clarity out of Chanel 2 (sounds farty) can’t tell if it’s the instrument or the amp and I’m loosing it over here
That’s just not right is it, well done though mate for sorting out yourself 👍😊
Did you get you 15th dose?
Being vaccinated is not exciting
All there tubes are very problematic, 12ax7, 12au7, the best pream tube is the 6h30pi the súper tube.