The Extra Hour | '75 Fender Champ Pt 2
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- Опубліковано 2 жов 2024
- The difference between good and great is usually just a matter of effort and care.
And alcohol.
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These are things I get asked about a lot :
Amp Tech Gear Used :
Hakko FX-951 soldering station
Weller SPG 80L soldering iron (chassis work)
Rigol DS1054Z digital oscilloscope
Thsinde 18B+ digital multimeters
Kester 60/40 solder
Techspray #4 No-Clean Desoldering Braid
Below are things that make this channel possible that people don’t usually think about. If any of these companies want to send me new and wonderful toys, I’m open to that. I can’t take free stuff when it comes to the amps I review, etc, but for the stuff below, bribe away!
Microphones/Audio Equipment :
Guitar Amps : Royer R-10 Hot Rod and/or Shure SM57 (noted in videos)
Voiceover Bench : sE Audio sE8 (small diaphragm condenser)
Voiceover Streaming : Shure SM57 with shockmount and windscreen
Voiceover Mic Arms : Elgato Wave Mic arms
Guitar Mic Stand : Gator Frameworks short weighted base stand with boom
Mic Cables and Guitar Cables : Mogami/Neutrik
Mic pre : MOTU M2
DAW : Logic Pro II on MacBook Pro 16 running Sonoma 14.5
Plugins : No effects other than level matching/normalization unless a recording
specifically has reverb etc added in post (rare, various Waves plugins)
Monitors : Yamaha HS7s
Monitor Stands : Gator Frameworks Desktop Clamp-On Stands
Monitor Isolation Mounts : IsoAcoustics Iso-Puck Minis
Headphones : Beyerdynamic DT 770 Pro (main)
Headphones : Sony MDR-7506 (alternate)
Video Equipment :
Camera : Sony ZVE-10 with SmallRig Cage (main)
Lens : Sigma f2.8 18-50mm (main)
Lens : Sony ZVE10 kit lens (rarely used)
B Camera : Apple iPhone 13 Pro (rarely used)
Tripod : SmallRig 71” with SmallRig Fluid Video Head
Streaming Mount : Elgato Master Mount S with SmallRig Ballhead
Bench Light : SmallRig RC 120D
Bench Light Diffusor : SmallRig Lantern Softbox
Bench C-Stands (light and overhead camera) : Neewer Pro SS Heavy Duty
Streaming Light : SmallRig RC 120B
Streaming Diffusor : SmallRig Parabolic Softbox
Streaming Light Mount : SmallRig 148CM Wall Mount Boom with Triangle Base
Various Other Lights : Neewer LED Panels with Neewer Softboxes
Video Software :
Davinci Resolve 19
Phantom LUTs
Paul Leeming LUTs
Adobe Illustrator 28
Adobe Photoshop 25
Ecamm Live (streaming software)
Sorry for the work drifting slightly out of frame at times. Hard to remember the camera when working.
Re: “aren’t you bored?” Not one bit. You’re at work, I’m at work. For ADHD’ers we call that “parallel play” and it’s very helpful for focus. You’re literally making me better at my job while you teach me things.
YES!!! ... "Parallel Play" ... my lifesaver! Nice to know I am not the only one in the world with this condition! Thanks!
I applaud the owners decision to go ALL IN with this Champ...!!!👍👍😎
😎✌👍❤🖖
This sort of video is really useful for people like me - a hobbyist who's just getting started learning about tube amp maintenance.
I appreciate the long videos because I wake up while watching them . Thanks . I worked in construction for many years . Your videos are not boring.
“All nice and wet. Sounds like a very different video.” Love the dry sense of humour to fill the spaces. Dedication to quality and reliable work is not boring.
I am impressed with your memory with Fender circuits. Lyle's long-form is where it's at. Thanks again for the step by step workflow with this Champ, and hopefully all others to follow. Stay safe.
In case you still wonder if the 'long/boring' videos are OK... They are VERY useful, we learn a lot and a lot of us enjoy every minute of it, really :) I started a complete overhaul of my 1959SLP and a new practice amp project from scratch... 80% of it all is based on those 'boring' videos. Thanks for what you do 👍
Really enjoyed this video. It's nice to see that the soldering station is treating you well. Maybe disconnect the little piezo horn to stop the beep when it's up to temperature. It's nice that it stays clean.
just looked back at pictures of the boards on my Fender amps...I'm gonna need lots of alcohol...literally and figuratively.
A great video to watch while enjoying a morning coffee. Thank you!
I find these videos pretty educational, as they don't just show the result, but give insights on the whole work process and how many ugly little details are involved if you wanna have a really great result. And honestly: 1h for de-populating the whole board... cleaning... de waxing... cleaning... measuring all components... properly re-populating... cleaning again... that is a pretty quick job! And you were even explaining throughout the whole time. 👍
Actually, I could very well imagine 2 different formats on your channel:
1. The "Consumer Friendly" Stuff that presents the amp, its problems and shows how they were solved. 5-10min. Easy to consume.
2. The "Die Hard" Stuff that shows your whole Work Process with all the nitty bitty details. 30-60min. Perhaps just for members (= donators) of your channel?
The only concern is, that it would be good for everyone to see, what effort it really takes to get an old amp back in great condition. That is what I mean by "educational content". Just seeing the finished results can give the impression that doing all the work is an easy job.
I don't follow sports ball either. We are not alone in that regard.
For straightening the wire: better take two pliers or a small vice where you pinch one end, then take the other push the wire a bit together so it bows up and then pull with a short tug/jerk apart => immediate straight wire. Did Miles of wire straightening out this way during my apprenticeship and it worked always, making nixe straigt pieces...
i can literally feel the viscosity of your focus. hope your micro humor embellishments aren't lost on many. personally, they are as informative to me as they are indulgent. well done, as always
Have a pangalactic gargleblaster for me.
I thought I was the only southerner who didn't follow the ball.
Sports: rigged distraction
Would love to see an extra hour of your process to dial the clipping out of a bias modulated tremolo--easier said than done in my experience, even after cooling off the bias!
I love watching a craftsman, artist, and smart and highly skilled talent do their work.
The youtube channel "Mr Carlson's Lab", proves you can't count on the print on the cap to determine the foil end with the newer Orange Drops. With a dozen or so new Orange Drops, he demonstrates the printing direction is random, and uses an oscilloscope to find the foil end, then marks them with a sharpie
How do you handle ventilation and fumes while soldering? Any health risk? Is a fume extractor worth it?
Dont you just just wish Fender used turret boards like Marshall?
Considering paper towel prices, you must buy in bulk!
I had a piece of something like paper, (probably a piece of cigarette paper), get sucked into my heat gun, where the airflow and the hot resistance wires got it stoked up with air and heat into a nice hot glowing ember. The heat gun spit it out and I had a little alcohol fire going. I use those flat tube cigarette tube papers to blot & wick moisture out of meter faces and other very tight places. I had guy drop a Yeasu 857 into a bucket of water. I used the cigarette papers to clean between the plastic window and the LCD display. It actually worked better after it got wet. I do NOT think that is normal. Plain cigarette papers are also used to check for leaking valves on woodwind instruments. $10,000 for a Yamaha Apex repad kit. It's for a $50,000 flute.
Hi Lyle, just so happens I've got red-green deficient colour-blindness too, I get reds and browns confused, and greens and oranges confused, but I have no trouble differentiating different shades of blues, same like you, I use my trusty multimeter to check the resistor values.
Hi Lyle, just so happens I've got red-green deficient colour-blindness too, I get reds and browns confused, and greens and oranges confused, but I have no trouble differentiating different shades of blues, same like you, I use my trusty multimeter to check the resistor values.
Watched this as I was working on my own guitar. Was good. Really looking forward to hearing this amp.
I guess I’m just one of those folks who love long vids 🤷♂️⚡️🤙
Loving this longer video format. Keep up the great work Lyle :)
All your Motts are belong to Hoople
You read my mind; and now I'll have "All the Way From Memphis" playing on an endless loop inside my head for the rest of the day!
@@goodun2974 ... then my work here is done. Enjoy!
Throw those old distorted fiber boards in the garbage, they're cheap!
I was so "BORED" that I totally forgot that I had watched for 1:05:40! Thanks Lyle, one of the truly intriguing series on the Web!
give the pliers a little snap when straightening the wire (hold both ends with a little play and a quick tug)
Oh bus wire? Have some old electricians show you how to take all the curly Qs out of a fish tape. There are two techniques.
"It's all nice and wet... sounds like a different video".... made me choke on my coca cola... A classic!
Hoping to pick up good habits...
Some well deserved love for that old Champ. Great video!
This was a great video. I prefer watching the longer videos, which is showing you actually doing the work with this type of detail. As far as your commentary, you’re doing fine . I think the commentary is absolutely necessary for the viewers to understand better what you’re trying to accomplish. I Look forward to watching part 3.
Boredom is a state of mind. I love this stuff. Makes me want to shop for a champ kit.
If anything, for me, this was a master class in soldering.
What a champ you are.
All good no worries 👍 mate 😊
3:54 "Bless their heart indeed" Now I'm not from the USA southeast but I'm told this is a thing you say to sound nice but carries the deep implication of "you're dumb as rocks"
Shit, they’re on to us…
Forgive me if you've covered this previously, but why did they cover the boards with wax? Was it done purposely or was it a side effect of some manufacturing process?
Do you ever use ether to remove the wax? (Sold at auto parts stores as starting fluid in a spray can)
Good lord no.
My kind of ASMR
Keep them coming Lyle! Long ones are great.
Lyle, thanks ESPECIALLY for this one.
Watching a thorough "gutting" was incredibly interesting. I REALLY enjoyed it.
A quick question if you might consider it......
When you pull out a pair of 68K input resistors off of the board...... do you:
Try to get each one back in the holes it came from?
Or
A 68K is a 68K. Just solder them in?
Thanks so much.
(This may be one of those Eric Johnson questions!!! :) )
If the 68Ks really measure 68K (or close enough) and the eyelet spacing is the same, it doesn’t really matter.
95% of players plug into the higher gain input jack, so the two resistors are in parallel anyway, taking their placement out of the equation.
In a very rare valuable amp any part that is temporarily removed goes back exactly where it was.
But this is a ‘75 Champ.
@@PsionicAudio Thanks Lyle. From a "logical" standpoint I knew that! It's just that there are those who "hold" that the "mojo" of the original amp requires that each resistor MUST GO IN THE SAME LOCATION where it spent the last 60 to 70 years .... or you have destroyed the amp!!!
Again, many thanks for what you take the time to do here!!! Bob
Lyle, are these the film coupling caps from Mouser that you recommended a few videos back? 75-MKT1813322405G
Yup.
@@PsionicAudio Thank you,
Thank you. Very glad I found your channel... Been chasing some ghosts that ended up being a slightly conductive eyelet board. Do you ever measure the boards before and after? Not in ohm's but by measuring near a hv eyelet before and after? Just wondering if it's quantifiable somehow...
Yes. Going from 12V to 0V feels very good.
@@PsionicAudio OK thank you. So I'm expecting 0V if I've done a good job? Do you have a particular measurement process? Or just measure vdc between ground and various spots on the board? Thx again. What a wealth of videos you've put together. Very much appreciated.
I’ve always cleaned off the flux the way you do but never thought of melting off the excess wax with a heat gun. Thanks for that tip!
I keep a piece of 1/2” thick wood next to my soldering station and roll the wire on the desktop to straighten it out. It works better than anything else I’ve ever tried.
In regards to an 8ohm speaker and the 2k7 NFB resistor, on my Champ I ran the NFB from the 4ohm tap and the 8ohm speaker on the 8ohm tap. Works perfectly. Thanks for pointing that out!
Loving the new thumbnail style. Solid content.
Would it hurt a champ to run it on an 8 ohm speaker?
It very much can. Most Fenders can handle a slight mismatch but the Champ uses such a tiny output transformer a mismatch is very much not recommended.
Lyle i love seeing exactly how to properly clean and prep a board for repopulating. I have never had to do this, as most of my amps are solid state. But you explained in one video the kind of materials they used and what happens over time. I wouldn't have know what to do with an amp like that. Coming from a 44 year construction background, this is my "happy place". I love fixing my amps, and keeping them working or upgrading the crappy factory component's so that they sound great and stand the test of time. You are my hero. Yes a cup of coffee really makes my day too.
The long boring ones are the ones I really like. They show the actual work, which is what I am most interested in anyway. Please more real time. Don't overthink production. Simple is fine.
Those extra hours are the thing that keeps me poor but also happy at work.
Hey Lyle. Would ironing with a domestic iron between paper towels be useful ?0
I love your work Lyle! But why not just change all the carbon comps for metal oxides?
Because MOs don’t belong in old Fenders.
@@PsionicAudio hey, born in ‘59, 70’s are still young 😆
That nasty ol’ flux, got nothin’ to do, but roll round the eyelets all day… [Sorry, should have thought this out a bit more…should have been “The YUCKY ol’ flux…” more in keeping with original lyrics…better next time…:-) ]
It's almost therapeutic watching you clean off all that old flux & excess wax and then repopulate the board. Especially on a simple circuit like the Champ. It's much easier for a novice to understand and follow along. Please do keep up the long format videos if you enjoy it. P.S. thanks for answering my queries on the Super Reverb treble pot/ 250k J taper. I've heard you say Fender uses a J taper pot enough times I was pretty sure that's what I wanted, but wanted to double check. So don't think I haven't been listening in class professor :)
If the replaced OT was over spec, one could present the owner with the option to run "any octal" output tube if you beef up the cathode bias resistor, ish? But, nfb toggle and a tone stack defeat mod and let a champ be a champ. But the hobbyist Hubris-ist in me keeps wondering the OT specs.
Does it not make sense to buy a new eyelet board for a Champ? (Originality not being an issue?)
Disassembly and reassembly time would be the same. So $30-40 (with shipping) for a board plus a week’s wait vs thirty minutes of minor effort?
@@PsionicAudio I figured repair time was more than the cost of the eyelet board.
Don’t worry about repeating yourself. For every so many of us regulars watching the video there’s likely one new viewer.
Thank you very much, this was very interesting... As always!
❤
Yea ,Ive noticed in the ones ive been into that about 69 or 70 quality of wiring goes out the window
Good morning Lyle, I do not work on amps, I just play them. I couldn't fix something electronic if my life depended on it. I love these long videos. I put them on while I'm at work and find them fascinating. No idea why. People are weird but I dig the long videos.
Lyle, every time I tune in, I learn something new. Today, I learned that we have a similar estimation of idiots in ties telling us what to do...as well as many aspects of meticulous craftsmanship as applied to old tube amps. Thank you.
We used to use 2 nails very close together in a block of wood secured to straighten out wire and Fish tape to get the kinks out ,the idea is to pull it at a sharp angle ,it may be a little to much for doing this but it does work well
I don't think "general malaise" is a material substance, let alone one that conducts electricity 😉
It’s alway cool watching you rebuild an amp.
I'm surprised how quickly you work.
Nice work - should last well beyond our time here.
The talking / narration is great, helps carry the video.
The long form gives you more opportunity for dry wit.
That comment at 17:17: Tantric amp renovation at its best 😂
Lyle, just to clarify, since I am about to swap my 4 ohm speaker with and 8 ohm. I can get away with keeping the negative feedback resistor spec'd for the 4 ohm speaker if I connect the 8 ohm secondary to the output jack and the 4 ohm secondary to the negative feedback resistor? Thanks!
Yes, exactly. Sorry I wasn’t as clear in that point in the video.
You removed all the tone wax! 😂
Awesome, Lyle. Thank you!
I love being a geek love all your videos
Love this kind of work and video Lyle.
Wasn’t General Malaise a Confederate Civil War commander ?
He was subordinate to General Cruelty.
Nice!! How useful would putting those depopulated boards in an ultrasonic cleaner be Lyle?
Tempting to try it, but you'd have to use a fair bit of alcohol to submerge the board,, and the fiber might deteriorate if put into an ultrasonic cleaner.
Are eyelet boards expensive? Why not just replace some of those warped crusty ones?
I don’t see any exact replacements for this model out there, the non-correct ones are $20-35 before shipping, transferring the hole locations takes time, and building a correct one from scratch takes much more time.
So this is the most cost-effective method.
The speaker baffle issue?
Love your work Lyle
Lyle, would it be easier to use a new Hoffman board rather than doing all that work? From a time saving perspective that is?
Nah, this is faster and keeps the original board/layout. I don’t like the Hoffman layouts personally. Good for beginners, but I have some disagreements with some choices and the aesthetics.
@@PsionicAudio I still have a JTM45 board from way back. lol I will probably never use it either.
Can you coat the eyelet boards with anything?
I could. But there is no benefit.
Seems like a NOS board (or equivalent) would take a whole lot less elbow grease.
See my replies to other similar comments.
@@PsionicAudio And now I know!
Yeah, but it’s that malaise that gets the laid back tone! Or did you say mayonnaise? 😂
Seriously though, on a total rebuild like this, would you ever consider a turret board replacement?
@@michaelfuller34 Or a fibreglass eyelet board with standoffs?
Mahalo Lyle!
My 2 cents: you don't have to talk throughout the video, we're all here to learn, no need to feel pressure to fill the silence
Can’t learn if Lyle doesn’t tell us EXACTLY what’s being done.
@SFGW Completely disagree. I watch this channel to hear what Lyle has to say here. His comments on things are the reason for being here.
You're not gonna remove all the flux around your new solder joints? What's the point then?
You can see me do that repeatedly in the video.