Destupidification | Marshall Super Bass Pt 2
ฝัง
- เผยแพร่เมื่อ 28 ส.ค. 2024
- Getting out the bad work, cleaning things up, and determining the condition of the amp, particularly the bottom of the PCB - any hidden damage lurking beneath?
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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) - เพลง
Towards the beginning I said leaky film caps don’t matter in an amp - in context you can tell I meant leaky caps don’t matter in the tone circuit of a GUITAR.
And late in the video I said Wima when I meant Vishay regarding MKT1813 caps.
Those responsible have been sacked.
Where can we go to get our mispoken back? 🤔😉
Yeah I think we all understood what you meant 😅
😅😂 Those responsible have been stacked 😅😂
Thank you Lyle for clarifying that little error. Those of us who are watching you work know you are trying to chew gum and walk at the same time. It's challenging to multi-task for me, so I get it. Filming and working isn't as much fun as it looks, and keep a narrative going. Thanks for all you do.
"Cleaning, cleaning, cleaning" automatically reminded me of Ted's "polishing, polishing, polishing"
It’s a similar mindset.
@@PsionicAudio Indeed, both of you have a distinctive way of working, explaining and reasoning. Nowadays... we are losing that mindset and that's a shame.
Thanks for your videos and great work!
@@PsionicAudio, "polishing the gloss to be the boss!" 😁
Polish the most, put it on your toast! Sorry got all PE#1.
I've said it before...I'll say it again. I appreciate EVER nugget of information you share, It's all GOLD!!!
Honoring high voltage musical devices is respect not arrogant behavior period. Enduring classic amps are a fine and rare good thing . A noble pursuit indeed .
"There are old tube guitar amp techs, and there are bold tube guitar amp techs, but there are no old, bold tube guitar amp techs."
These videos of you actually doing the work are much appreciated and that's what makes this one Gold!
I do the odd soldering stuff, and I have to point in admiration at your dexterity and brevity with the braid/desoldering. It may be dull to most but I shake my head and smile watching it. Mainly because I can perma-solder braid to wire with admirable regularity. ;))
Do it a few more thousand hours. You’ll get the hang of it. ;)
Shit I've never been able to get braid to even work ;)
@@whatilearnttoday5295 it really is dependent on the braid (brand & type) you use and using the correct braid for the job. I have used braid that just does not work unless used with much flux and others that work well. Lyle uses the Techspray 1823 #4 try that.
Morning coffee , and the perfect entertainment , Thank you Lyle . I and have been building amps since 85 , self taught and learned from books , manuals , and original amps , blew up a lot of shit lol and learned , have a hell of a collection of Champs , deluxes , Supros , Gibby's ,and off the wall shit, no Marshal though ....Wish you were around back then .... Am a Tele player over 50 years , but have been playing Mississippi sax player since 12 , once I found DC power for my harp , there was no turning back .... , love clean , but discovering crunch in my later years , keeps me young . There are so few of us left , one must keep this craft alive , Thank YOU for ALL that you do . I give a lot of my amps to aspiring young players , also am a bit of a luthier and can there fore help with their instrument's , Have always been involved in promoting music in schools and anywhere I can ......cheers bro .
Thou quoteth Life of Brian- my favorite bit.
At this time, a friend shall lose his friend's hammer and the young shall not know where lieth the things possessed by their fathers that their fathers put there only just the night before, about eight o'clock.
I know everthing you do is a labour of love.
Thank you Lyle
Lyle...You ARE one of the very best in your profession 😎👍
Thanks man but I can’t think like that. I just try to be the best tech at my bench.
You’ll see me make a boneheaded goof in tomorrow’s video.
I mean, you’ll see me catch it and correct it, but still.
@@PsionicAudio
And there it is folks...
WHY Lyle is one of the best in his profession...!!!😎👍👍
@@PsionicAudio, it has been said that an expert is someone who has made every mistake there is to make in his or her field; by that metric I am clearly not an expert, and sometimes I make the same mistake twice because I've forgotten about the first time!
I find the evolution (or de-evolution) of amp pc boards interesting.
They went from beefy, robust almost indestructible slabs, to delicate thin wafers that get damaged by just breathing on them.
I’m a bit confused by this comment, as this board from ‘73 is definitely in the delicate wafer category.
@PsionicAudio I worked on a JCM 900 Dual Reverb 4100, that was my reference point....compared to the SL.
Ah. The boards are actually pretty much the same. The old ones just had fewer hot things on them. And no pots suspending everything.
@@PsionicAudio, the brown phenolic circuit boards of the 50's and early 60's were fairly difficult to delaminate and the traces were usually wide and thick, and sometimes tinned with solder ---- but you didn't start seeing printed circuit construction in guitar amps until the mid-late 60's (Ampeg was an early adopter, but who was first?); and by the mid 70's nearky every consumer device was using the thinnest, cheapest, most fragile, low copper content boards they could get away with......which is one thing for solid-state equipment run at modest voltages, but tube gear at 400+ volts needs quality pcb's with a high insulation factor.
@PsionicAudio Lyle do you have a good recommendation for trace repairs, as in a brand? My 1978 Marshall traces are much thinner than this one, and the previous tech/owner "cooked" all the pads on several small transistors. They did a bad job tack soldering it back together also.
Someone keeps moving my-y-y chair!
Thanks for the TMBG reference 😎
Thank You for the long form Video.
72’s are a D serial. I thought they didn’t use B. 69 and ‘70’s can be A and 71’s C. Maybe it’s a short run where some escaped with a B but they scrapped it soon after? But it’s a ST-1 board, correct? Which would put it anywhere after the middle of ‘73, when they went PCB.
Beautiful amp
A morning coffee and some very good entertainment . thank you .
My guess is that the “B” in the serial number was a poorly stamped “E” which would make it 73. Thought they switched from turret board to PCB in 74, but I wouldn’t be surprised if it was end of 73. I know the 73 (validated by inspection sticker, serial number, cap codes before I replaced etc) I owned for years was turret board. Regardless very cool amp!
I hate when I pick up a Crescent Wrench and it's the wrong size, Ha ha!
🤣🤣🤣
I had this problem the other day...
Look to be honest. All jokes aside. It's very important that people using one know how important it is to property tighten with every turn. How the sides must be in full contact. It's your tool, it will last you a lifetime.
Thanks for the video Sir.
Great video. Thanks.
Audio good,visual good too!
I will use the baby German made Knipex Channelock style pliers on pot nuts. End on the nut just like Lyle is using his adjustable wrench. It's just a little potentiometer nut, not a rusted on head bolt for a 1937 flathead Ford V8. If it was on that tight the bushing on the pot would have broken off years ago. It's brass or pot metal.
Jolly good show, ol' chap!
Don't worry about if it's fascinating or not. Don't worry about filling space with talking.
I did enjoy the Les Paul owner jibe though ;)
That’s a great album title
Such great content always. We need to get you some kind of overhead camera holder.
Thanks. I have one and I’ve used it in quite a few videos. It’s a bit tricky with the lens I have though, looks kind of flat and contrast is diminished.
@@PsionicAudio lighting is damn hard if it isn’t right with easy stuff.
Excellent They Might Be Giants reference!
Came to see the amp. Stayed for the They Might Be Giants. 13:26
Soldering wires to terminals and turrets requires good technique because you want the wire to be insulated right up to but just shy of touching theterminal or turret, because if the plastic insulation is touching the metal parts your soldering, something apparently cooks out of the wire and contaminates the solder joint. I suspect that sometimes the hot insulation outgasses something that affects the nearby solder joint as the insulation is being melting by the heat of the soldering process, even if solder and the wire jacketing do not meet.
TMBG and Romeo Void song references in the same video! :)
some "snipidy-doo-da" as Brad would say
You know it, mate!
“I have come here to chew bubble gum and solder parts, and I'm all out of bubble gum”
Never say never.
Your socks go out to the socks club and hook up with other socks.
Some go to the same socks club so you’re probably going to end up with mismatched socks of different sizes.
Hey, it’s all good.
Feet need socks
Cheers from NZ 🤘🎸😎
Crecent wrench = 9/16ths adjustable 😅
HA! :D Thats Monty Pythons! Life of Brian! :D
Audio is fine
Mahalo Lyle!
Best title ever!
I love to watch soldering / de-soldering. Especially by people that do it elegantly. Any chance of an overhead view?
The way those wires are threaded thru the board seems like it will be very difficult to free the board from the chassis. Anxious to see that.
Interesting that the traces are external ,Im also curious how you will bond the Grounds I know you dont like the stacon crimp type mechanical connectors especially because the wire is stranded ,shame you cant use some type of terminal there so only one wire is soldered to the post and would take away originality
I've dropped them and other larger parts and watched them bounce up toward me and...
vanish (turn invisible) right before my eyes. Never to be seen again!!!!
I knew an old engineer that called the crecsent wrench a "boiler maker's hammer".
Assuming they're not stainless, you could remove those little toothed washers the easy way, with a magnet. I don't think I've ever seen you use a telescoping magnet, but I use one frequently. Also, because my eyes are old, I invariably have a flashlight nearby when I'm working on anything with small parts, and most of my flashlights have strong magnets attached to the bottom end (many cheap flashlights these days have a flash mode designed to function like a road flare if your car breaks down at night, and the magnet allows you to sticknthe flashlight to the roof or hood of the car). Which brings up a philosophical point; If asked what was the most important invention or discovery made by early man, most people would probably say fire, or the wheel ---- but I think I'd say magnets and magnetism, and figuring out how to utilize them. 😉
These ones aren’t ferric. I tried a magnetized screwdriver first, edited out.
@@PsionicAudio , I've worked on a lot of Nakamichi hifi equipment in the past ---- in their amps they used a mix of machine screws that were anodized a nearly identical black but some were steel and magnetic, and others were some sort of copper alloy, non-magnetic, and soft, therefore easily stripped or subject to chewed heads. Not to mention that they were JIS, Japanese Industrial Standard Phillips and a little different from the Philips screws we are used to. They required a light touch with a handheld screwdriver to get them in and out without beating them up.
@@PsionicAudio , they're not ferric, they're feral, poised to escape into the wild!
“Many amazing uses for invisible metal”
Next time you get shit for using a Crescent Wrench, throw it back in their face and tell 'em it's actually 'a vintage adjustable spanner'...
As long as Lyle's not working around a missile silo, the crescent wrench is fine! "The warning lights are flashing down at quality control/somebody threw a spanner, threw it in a hole...." Dire Straits
Love all your videos. Just wondering though, why not put the camera on the other side pointing towards you sometimes? Must be a good reason why you don’t.
It’s about the amps, not me.
Unless you meant just why not have the camera on the other side of the chassis, in which case it would be in the way of my scopes and meters and tools.
@@PsionicAudio got it. Yeah I meant so we can see the work better, not you.
Here in Portugal is cherry season...
Those things with a sort of... raffia work base? With an attachment?
Lyle, if they don't like your ways, they should open a shop and take your customers... I don't see that happening. F'um.
That's a deep Might be Giants callback.
Run hot. Hit it and quit it. Rather run hot than pushing on a joint to get it to heat up …. While fucking up the via or trace.
Me too. Floor the temp. In and out.
👍 👍
That’s a real word in this world 😂
Old cap myths, bunch of mumble bumblebees. It's almost like claiming old 9v batteries give yer stomp box a vintage magical tone... Great video,by the way. Cheers!
Absolutely! You didn't know that? NOS 9V are shiznic
@@DetroitWrecker666 Ha! Shiznic in my Shnoozle!
@@fullwaverecked well, I tend to cuss a lot. It will be flagged by TH-cam. So I have to be creative.
@@DetroitWrecker666 And I as well, but one of my buddies can't say "Pass the salt" without dropping four ef bombs, so I think we're doing pretty good.
what braid you use? i use NTE but this stuff is costing me $10/roll and i go through alotta it
In the description
Chameleon screws and camouflage nuts? More color-match changes than an octopus is capable of, or Mystique from the X-men movies. If you were working on turntables and tape decks like I have, you'd be cautioning about "Jesus clips", those little E-Clips and C-clips that you pry off only to have them go flying into another dimension and disappear, making you wonder, "Jesus Christ, where did that damn clip go to?!"
I know about E clip escapement…
My dryer doesn’t play too many tricks but the gnomes like to hide random things.
All this talk about preserved mustard is making me hungry
They might be giants... maybe. Python-quoting giants at that..
I'd like to think that tearing out that pcb and rebuilding the circuit on a decent turret board wouldn't hurt the resale value. "Like to think'
Maybe thats wishful thinking , and as much as i love old marshalls , that pcb has to be a pain in the ass , and God knows it's cheaply made.
You might like this one:
Last Look Inside This Marshall | '76 Superlead Mk II Part 10
th-cam.com/video/jYPLIBWYZIg/w-d-xo.html
@PsionicAudio yeah, man. I remember that one well. Really nice job, and I know it gave you huge satisfaction. It will be around after all the stock st1 boards fail, I'm sure.
The Honda dealersip charges $1500 to replace a starter.....1.5hr job.
I'm wondering how much this cost the amp owner?
Right now we’re at two billable hours with the bad work removed, the board cleaned and ready to be repopulated, the pots pulled, and the preamp filter cap out.
Note that 1.5 hours of that is undoing the previous guy’s bad work.
I don’t charge dealership prices, so move that decimal to the left one digit so far.
B serial number?? Amps from 1970 should be PTP...
Exactly. Maybe an older chassis was used. Dunno. But definitely late ‘73 at the earliest.
Lyle says its a '73 amp; and Marshall used turret board construction before they went to printed circuit boards. I don't know if they ever used true point to point construction; perhaps in their earliest builds?
@@goodun2974 Never true point to point in Marshall.
Yeah, I figured he meant turret.
Id agree with Lyle 73/74. This color PCB I imagine is the earlier run before they changed to green PCB.
I just finished a 74 Super bass, what a treat. NOT
I hate to have to thumbs down this video but it’s all hand