Fender Silver Face Twin Restoration - Part 3
Рет қаралды 2,846
2 ай бұрынPrevious episodes:
Part 1: • Fender Silver Face Twi...
Part 2: • Fender Silver Face Twi...
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/ @bradsguitargarage
Webpage: www.bradsguitargarage.com.au
Facebook: bradsguitargarage
Instagram: / bradsguitargarage
Equipment:
Soldering:
Pace MBT station w/SX100 & PS-90 handpieces
Hakko 474 w/815 handpiece
Hakko 936 w/907 handpiece
Hakko FX-888D w/FX-8801 handpiece
Quick 861DW hot air station
BOFA fume extraction unit
Loctite Multicore solder (C511 / 362)
Test Equipment:
Fluke 11, 175, 177 & 179 handheld DMM's
Tektronix 2236 analog oscilloscope
Rigol DS-1054z digital oscilloscope
BK Precision 4017A sweep / function generator
BWD 160a function generator
HP 6236B triple output DC power supply
Kyoritsu 3132A insulation / continuity tester
Video equipment:
Overhead cam: Panasonic HC-V785 w/Audio Technica AT9946CM mic
Handheld cam: Panasonic DC-G85 w/Olympus M.Zuiko Pro 12-40mm f/2.8
On location cam: Panasonic DC-GH5s w/Panasonic-Leica 9mm f/1.7 & 12-60mm f/2.8
Capture card(s): Magewell HDMI USB, ATEN UC3020-AT, ATEN UC3021
Headset Mic: Audio Technica BP892xcW-TH
Lapel Mic: Rode Go
Editing: Adobe Premiere Elements
Hand Tools:
Wiha, Felo, Stanley screwdrivers
CK & Engineer cutters / pliers
RS Pro wire strippers
Sidchrome & Gear Wrench spanners, sockets & shifters
Veritas planes & chisels
Materials / Consumables:
JJ's / TAD electron valves
Elixir / Ernie Ball / D'Addario / Rotosound strings
Electrolube & DeoxIT cleaners, lubricants & chemicals.
@PsionicAudio 2 ай бұрын
Respect for showing your screen ground goof.
@BradsGuitarGarage 2 ай бұрын
As always, thanks for watching, mate! I know you're a busy man and it means a lot.
@tjminasi1442 2 ай бұрын
For sure
@Mark70609 2 ай бұрын
Agreed, keeping it honest. We all make mistakes.
@plantpotpeople Ай бұрын
Great work and playing as always.
@geezberry8889 Ай бұрын
my man you are creative. you could be cast in game of thrones
@edwardhannigan6324 Ай бұрын
Hey Brad..Just a work of art & a beautiful sound..You the man..! Ed..uk..😄
@MrStevehunter33 2 ай бұрын
Love The Fifth Element reference. It sounds great; classic Fender. The owner's going to have a large bill to pay, but worth it. This amp will probably outlive them now.
@BradsGuitarGarage 2 ай бұрын
One of the best movies I've ever seen. I watch it every 6 months or so.
@MrStevehunter33 2 ай бұрын
@@BradsGuitarGarage That explains your resemblance to Zorg
@BradsGuitarGarage 2 ай бұрын
@@MrStevehunter33 Jean-Baptiste Emanuel Zorg, thank you very much. I could be dead broke and if I had 1/10th of Gary Oldman's ability, I'd be happy.
@colinaiken 2 ай бұрын
I like that you found the problem. Great work!
@Stratman6257 2 ай бұрын
Excellent job sir. The new wiring looks awesome. Keep up the great work and keep protecting your name. Most customers will always appreciate the attention to detail. Cheers from the states 😊
@chriskilgore930 2 ай бұрын
I worked for a power company in the USA and we had the green slime problem with a lot of substation PVC insulated control wiring that was installed in the late 1960's and early 1970's. We had it lab tested and much of it did come back as PCB contaminated.
@BradsGuitarGarage 2 ай бұрын
Right, good to know, mate. Thanks for letting us know. That's where my carbon filter on the BOFA extractor is crucial in the closed environment of my workshop. Would you happen to have any links to evidence for my reading and a possible warning video in the future?
@Da_Porkchop_Xpress 2 ай бұрын
well done, Brad!
@victorbeebe8372 2 ай бұрын
Good job Brad!
@murrayguitarpickups9545 2 ай бұрын
Love your work Brad
@TheStephensjoshua 2 ай бұрын
Nice, clean work.
@Kmiommi 2 ай бұрын
Well done. Great show
@watkinscopicat 2 ай бұрын
incredible job! 👏 looks amazing
@kenr86 2 ай бұрын
Bloody good job. Massive props to you
@Skman22 2 ай бұрын
Beautiful work fella.
@Nobody92421 2 ай бұрын
Thanks for posting
@tedmich 2 ай бұрын
Great and thorough vid as usual Brad! The special FX are an added bonus!
@alvagoldbook2 2 ай бұрын
Holy moly, that’s a full rebuild! Looking and sounding fantastic now!
@rustymohican8280 Ай бұрын
Perfection!!!
@lukefarrugia973 2 ай бұрын
fantastic work Brad - thanks for sharing this, owner should be very happy with the outcome
@peeemm2032 2 ай бұрын
As always a great video.. I might have been the somebody who said that the wiring goo might contain PCBs.... I got this from watching a vid on Fran Blanche's channel where she was servicing, (from memory) a silver face Bandmaster and replaced the power cable, which was oozing goo and turning the copper green.... She's usually well informed about these things, so I took notice... A quick search came up with a paper from the University of Idaho which said it was used in "cable insulation" (whatever that may mean) among other things, and a reference from the Oz Dept of Climate Change, Energy etc. (DCCEW), that said it was used in a range of electrical equipment, paint, and also as a "plasticiser", so who knows? Given that it was used in just about everything until about 1979, and is very persistent, it's probably still all around us - and worrying about everything will kill you too! Heck, asbestos is still used in garden mulch in good old Oz.... Your mileage may vary, ss they say in the goid old US of A, but I'd personally use gloves, or at least wash my hands before I ate my lunchtime wrap if I was touching oozing wiring in anything pre 1979.... Cheers, love your work 😊
@BradsGuitarGarage 2 ай бұрын
Generally I'd defer to whatever Fran says as she knows more (a LOT more!) than I on most subjects!
@peeemm2032 2 ай бұрын
@@BradsGuitarGarage indeed.....ditto!
@RaxFx 2 ай бұрын
Beautiful work - both you and owner should be proud.
@abijag100 2 ай бұрын
Bass thru the Normal ch sounds great !!
@garryparker337 2 ай бұрын
Bloody marvelous is all I can say. Great sound check as well 🧐
@ericluttinger6546 2 ай бұрын
That, to me, was a ton of work. Looks freakin' great. Great videos man, I really enjoyed them.
@ScottyBrockway 2 ай бұрын
Nice one Brad.
@frankiechan9651 2 ай бұрын
Always a good day when something comes back better than when it left the factory. It looks and sounds amazing.
@khillsy4489 2 ай бұрын
Complete and thorough work. It's maddening when obvious problems are ignored because it's not on the order sheet. Just do your job. 👍👍👍👍
@jeffhamk 2 ай бұрын
Love your work. Will definitely go to you if I ever need a repair. Thanks for your honesty.
@roryloftin6493 2 ай бұрын
Lots of nice guit box groove thanks from Oklahoma USA
@jjiacobucci 2 ай бұрын
Very quiet. Congrats
@colinaiken 2 ай бұрын
Thanks!
@BradsGuitarGarage 2 ай бұрын
WHOA! Thanks buddy! That will go toward my ramen tonight when I walk around Sydney filming the Vivid 2024 event!
@Andy_Yates 2 ай бұрын
Doesn't sound like much work. BS that's a ton of work and it sounds epic now👍
@GetTheLedOut8585 2 ай бұрын
Periwinkle blue fish paperundahthelamp - it's fer me ma! That's a GREAT sounding Twin. Great job man!
@BradsGuitarGarage 2 ай бұрын
HAHA! I love that movie! Thanks for watching, mate!
@swaffy101 2 ай бұрын
I think it’s awesome you own your mistakes. Very funny and amazing work. Subscribed!
@Lu_Woods 2 ай бұрын
Us artistic, creative, curious types are lucky to have artistic, creative ,tech types like you to keep things rockin' ; )
@martinreid1740 2 ай бұрын
I really enjoyed this, great work as usual and to a very high standard, the owner is very lucky to have such a good technician. My last Fender was a Quad reverb back in the late seventies with the pull boost on the master volume which I never used. Thank God it had castors because it was really heavy. Anyway it never let me down gigging for years. Happy memories.
@petertimp5416 2 ай бұрын
Thanks. Haven’t seen black film Cap’s before?……oh, did you say they’re blue?
@malliz1 2 ай бұрын
Geeze mate not only are you human but your honest as well ❤
@sonicduderanch 2 ай бұрын
Yesterday I started loosing my mind about a new reverb tank not putting out any sound........Then I turned on the standby. :) As you said, Human!
@Mark70609 Ай бұрын
Yeah, the old story to err is human and divine to forgive. Not to mention the other adage, he who hasn’t made a mistake has learnt nothing.
@joemcgraw5529 2 ай бұрын
Beautiful work Brad ,anyone that has issues with it is just jealous !!!
@kyledriscollmusic 2 ай бұрын
such an iconic bass amp
@bllyfen8 2 ай бұрын
Man would love to hear this one in person, I bet it's intense! Admirable work bud.
@BradsGuitarGarage 2 ай бұрын
It's very punchy however the master volume is very effective at getting nice breakup at moderate or even bedroom levels. Post-PI MV's can be great, but don't disregard pre-PI MV's. Executed well, they can be fantastic.
@MichaelSmith-rn1qw 2 ай бұрын
I guess I've been lucky. I have Fender amps dating from 1968 to 1980 and none of them have developed that green corrosion problem on the wires. Like you said in the video, it must have been a bad batch of wire they received, and was used in various amps, without regard to amp model. Nice job on the complete rebuild!
@gamjammallota78 2 ай бұрын
The whole series on this amp was insightful. I believe an Angel gets their wings whenever a classic tube amp is resurrected. God works in mysterious ways, after all.
@jeanemmanuelkrieger6001 Ай бұрын
these amps have an insane amount of bass, perfect clean platform , mine has a nice reverb but not as deep and drippy as this one, I wonder why?
@Olivil 2 ай бұрын
Ah yes, a new video from my favorite enthusiast of the Fluke 170 series multimeters.
@BradsGuitarGarage 2 ай бұрын
They're great!
@YeatzeeGuitar 2 ай бұрын
I really like what you did with that 100R
@BradsGuitarGarage 2 ай бұрын
Yes, the same trick works on cathode biased amps even more effectively. It gives you the elevation you so crave!
@BenState 2 ай бұрын
Lol@ intro! But in all seriousness, really really pretty work mate. One of your comments reminded me of high school days when we used to connect up amps in chains like muppets!!!
@scottwilcox6313 2 ай бұрын
Nice work. I'm sure you already know. Is the camera the same because it looks crystal clear. Sounded crazy good.
@BradsGuitarGarage 2 ай бұрын
Same camera. It gives back what I put in, effort wise.
@zulufrog Ай бұрын
Brad, I don't remember where it was you mentioned PCBs are superior than other ways of wiring (PTP/turret). Would you mind expanding on that thought?
@markspurgin8225 2 ай бұрын
Lol 😆 🤣 😂 the production bravo 👏 👍
@paultaylor2968 2 ай бұрын
Legends both of you .😅😊
@michaelfiolka4943 2 ай бұрын
Hey Brad, that is some clean wiring! I am currently sourcing parts for my SF twin, and I am struggling to find a replacement for the shielded wire (the one thats causing the green goo spill). Could you tell me what kind you used? Would be my salvation!
@Cpt_Adama 2 ай бұрын
LMFAO 🤣🤣 Love your clone.
@Mark70609 2 ай бұрын
You used teflon coated wire for the heater wire? That makes life easier. I understand you wanted to keep the amp similar to a stock AB763 circuit, I was wondering what was your motivation for using two 100uF caps on the B+ instead of the old mod (Mesa Boogie and the Blackface Twin) of using 220uF caps. The idea behind it is that amp sounds tighter at volume. Though there would be less hum due to more filtering. You did mention which ceramic caps you liked using in the tone controls, though I can’t remember what you said, could I trouble you to tell me? I suppose that leads into another question regarding using silver mica caps in lieu of the ceramic caps. What’s your take on that?
@goodun2974 2 ай бұрын
It occurs to me that the "member" star is the same green color as an old-fashioned "magic eye" type tube,, but those tubes never producrd a star pattern, which is a shame. An eye-tube star that expands and contracts would be pretty cool!
@johnwilliamson467 2 ай бұрын
Spot on on the cause for the green death ! Very poor wire . Home wiring solid core romex in USA has little of that problem . Stranded wire looks like about all of the problem . Home wiring tend to darken a much less of a problem than green.
@Bolandcustoms 2 ай бұрын
He has finally lost his mind haha clones hahaha
@Splattle101 2 ай бұрын
"So in summary, it doesn't sound like that much," quoth he, after rebuilding the fucking thing. 🤣
@SPIKESBIKES50 2 ай бұрын
👍👍👍
@colbyjack7074 2 ай бұрын
@bradguitargarage I'm guessing you use that cleaning bucket to milk the cows in the morning... right mate?
@BradsGuitarGarage 2 ай бұрын
I use it to make amp-knob soup.
@cactus-mcjacktus Ай бұрын
Howdy! Haven’t caught up on this adventure yet but thought i’d drop my comment here. Obviously adding the master (amongst the other changes that happened to these amps in the 70’s) went against the whole “clean with massive headroom” thing that Leo Fender loved, but what do you think of the silver panel amps (in comparison to say, a black panel that everyone kinda knows), especially the master volume ones? I’m curious.
@BradsGuitarGarage Ай бұрын
I think they're great. Many people "black face" the PI etc. You can avoid that by just changing the input coupling cap to scale along with the PI tail component values on later SF twins. But then the problems laid out in this video series still remain. I suggest you watch them all if you haven't already to know what they entail.
@cactus-mcjacktus Ай бұрын
@@BradsGuitarGarage I definitely plan on it, and thank you for replying!
@markprentice7785 2 ай бұрын
Could the missing ground on the screen have had any effect on the trem ticking? Probably a stupid question
@BradsGuitarGarage 2 ай бұрын
Yes, that would have been a factor. But once corrected, there was still a tiny bit left only when the reverb was maxxed out, which the cap sorted out.
@larrychung3190 2 ай бұрын
Thanks for sharing this - I'd be curious to know approximately how much time you ended up dedicating to this restoration/rebuild?
@BradsGuitarGarage 2 ай бұрын
It was about 10 hours of work, maybe double / triple that thanks to doing the video.
@larrychung3190 2 ай бұрын
@@BradsGuitarGarage many thanks - btw - props for posting the "missing link" on the filter cap. it's always reassuring knowing that it's not just me doing the duffing! Cheers and g'day. (:
@davidlovellbass4761 2 ай бұрын
Did you switch to a bass in the last bit of the playing demo?
@BradsGuitarGarage 2 ай бұрын
I certainly did.
@bambule5268 2 ай бұрын
Your twin is more handsome than you. That twin reverb sounds so good! Great work!
@BradsGuitarGarage 2 ай бұрын
Ahh, but the one on the right said "I didn't ask to be cloned" which could be taken as him being the original, so technically the one on the right could be the real me!
@bambule5268 2 ай бұрын
@BradsGuitarGarage still believe his beard looks better!
@Mark70609 Ай бұрын
Am I correct to assume that you replaced the 68K grid leak/bias resistors with 220K resistors?
@BradsGuitarGarage Ай бұрын
You are correct.
@Mark70609 Ай бұрын
@@BradsGuitarGarage thanks again for your reply. I appreciate your help.
@IainThacker 2 ай бұрын
"They're artistic, curious, creative people" is a really polite was of saying "idiots"! I say this as a musician (well, a bass-player, musician-adjacent), most musicians are dumb as dirt when it come to tech stuff.
@BradsGuitarGarage 2 ай бұрын
I admire their approach and the curiosity. However one of the two main reasons I started this channel is so they can make informed decisions in their artistic quests!
@jevinedric5390 2 ай бұрын
What brand & type of chassis iron do you use?
@BradsGuitarGarage 2 ай бұрын
It's a Hakko 100W thing, but I'm not going to recommend it as there are better ones out there. Any 80-100W iron from Hakko or Weller would be perfect.
@jevinedric5390 2 ай бұрын
@@BradsGuitarGarage Thanks Brad! Love your work 😁
@thatampguy 2 ай бұрын
The nuclear option
@BradsGuitarGarage 2 ай бұрын
Maybe a tactical one.
@zulufrog 2 ай бұрын
How much would the old transformer wires affect an amp that has been almost completely re-wired?
@BradsGuitarGarage 2 ай бұрын
Not sure what you mean. What in particular are you referring to? Lead-dress or something?
@zulufrog 2 ай бұрын
@@BradsGuitarGarage Just the wires coming off the transformer, the cloth covering looked older and more “worn”(?), and I was wondering if that could affect the amp in some way.
@BradsGuitarGarage 2 ай бұрын
As long as the insulation is still in good condition it shouldn't have any impact at all.
@zulufrog 2 ай бұрын
@@BradsGuitarGarage It was just one of those "I'm not a tech" type of questions. I am a big fan of your work.
@TKsGuitarandAmpRepair 2 ай бұрын
you say flyback event, I say the previous hack shorted a plate to heater with their uninsulated meter probe tip. Know a guy who did that once. ONCE.
@BradsGuitarGarage 2 ай бұрын
I doubt that would leave arc damage across the hum balance pot and valve socket. Think hard about the failure mode and it's electrical conditions.
@TKsGuitarandAmpRepair 2 ай бұрын
@@BradsGuitarGarage I'll take your word for it - have yet to witness a flyback myself. The reason I suggested it was the one time I saw a shorted heater-plate, it arced freely between the pins after the probe was removed, until the heater balance resistors exploded about half a second after. Wanted to blame the tech and not the musician :)
@BradsGuitarGarage 2 ай бұрын
Ohhh, ouch! Right there is one of the reasons why we use heater balance resistors rather that a centre tap. Imagine the carnage!
@YeatzeeGuitar 2 ай бұрын
🤣
@colbyjack7074 2 ай бұрын
@brad Your twin bother is a bit better lookin' than you mate. How does he do with the ladies?
@BradsGuitarGarage 2 ай бұрын
That's not hard! He's rubbish with the ladies while I lock him in the storeroom. When he gets out, he's unstoppable.
@petertimp5416 2 ай бұрын
Thanks. Haven’t seen black film Cap’s before?……oh, did you say they’re blue?
@BradsGuitarGarage 2 ай бұрын
Yes, it could be the exposure of the shot, but they are a dark navy blue.
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