I Set a Customer's Amp on FIRE! - Metropoulos Marshall Plexi Clone Catches FIRE on the Bench
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- เผยแพร่เมื่อ 29 ส.ค. 2024
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This was going so well. Troubleshooting a customer's Metropoulos Marshall 1987 Plexi Clone, changing tubes, rebiasing, adding a post phase inverter master volume (PPIMV), and then it happened...it caught fire.
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That socket is bad now, even if you clean all the carbon off it can still conduct. Please note: this is a DIY Metroamp kit build, not a Metropoulos replica. Great video and channel!
Thanks for clarifying. The arc didn't occur on the socket, it occurred in mid air like a Jacob's Ladder.
I agree. It looks like a Metropoulos kit put together by somebody else, looks sloppy regardless of the fx loop.
They should have bent the pins of the sockets outwards to keep them separate. Looks like they didn’t trim the excess wire on the terminals and that will conduct again, especially if the play the amp unloaded accidentally, the fly back voltages in the OT will arc to the heaters again. Don’t ask me why I know! LOL
Thanks for clarifying that George. I was going to post that this amp looks nothing like the one you built for me. Night and day difference.
lmao..... pause the video @10:25 and tell yourself that arc is in the air. you mite rethink it. 🔥💥💥💫
Please bring the kits back, George! I'll do better than this guy did, I promise!
BTW, wicked awesome quick reaction on blowing out that fire!
A fine display of arc welding, Brad, and without a helmet ;) The Underwriter's Laboratory would never approve.
Didn't Underwriters also try to debunk some stuff a few years back? No longer credible. :)
It goes to show, that drinking and drivers don't mix.
Can't argue that one!
Damn! Almost all of us who have worked on tube amps have had something like that happen. If it hasn't happened to you, it will. Glad that the only casualty was your shorts.
You enjoy one Beer on the job and KABOOM!
Try 3 or 4 and now we have a video!😜
5:41 - it takes a lot to mess up one of those.
Me: hold my beer...
People that don't know what they're doing, shouldn't get involved with things like that. They need to know their limitations. Bring it to a professional, instead of trying to cut corners and save money.
Oh dear, no sense of humour alert...
@ Gary Stevens correction... Me: hold my India Pale Ale hipster bullshit beer...
"So I just changed the tubes, adjusted the bias ...... changed my underwear..."
I had a similar thing happen when I was working on my brother's Roost amp. The insulation on the anode wire was rubbing against a filament pin and broke down while I was testing it. Sparks and smoke!
It is at 10 minutes, and 25 seconds people. See our good man Brad jump and get lively. Greetings from Niagara Falls, Canada.
Brad the top vents came on the 100 watt Marshalls not on the 50s.
LOL the editing is what got me "Hey you know we're in the spirit world?"
About ten and a half min in. FLEX!💪🏼
Great vid Fire Marshall Bill !!
Thanks Brad, you did a FINE job on my amp! I tried it out a bit last night and it sounded like a glorious plexi.
Wonder if Brads flesh would’ve changed the tone?
Brandon Goodale ...Great sounding amp. I’d say I’m not jealous, but that would be a lie! I hope it gives you many more years of joy! But, for the love of all that’s righteous, get that mini switch hole fixed! ...LOL... :)
Yeah it’s crazy what they did and the more I think on it I don’t even want the effects loop. I put all effects into the front end anyways. If it was good enough for Hendrix, Page, Clapton, Etc then it’s good enough for me. I just bought it like that. Haha
I had one of these. I installed externally accessible bias pot and test points. I used it as a church amp for a lot of years. It once red plated and smoked a reproduction 6CA7 tube in the middle of a song. I slapped an old set of el34’s in it behind the stage and rebased the entire thing between songs.
Hendrix, Townshend, Blackmore, you're in esteemed company,burning tubes, SMOKIN' TONE!!!
Pale ale was cool long before the hipster trend.
Bass has been around for ~ 250 years? The IPAs since British colonization of the Indian subcontinent. Truth is most hipsters can't afford more than one IPA nightly and switch over to PBR after happy hour😉
Enjoyed my first Sierra Nevada pale at the Bristol, KYCPA, Main Street Louisland, KY circa 1996.
The Commodore is a tasty brew.
Hail to the Pale!
Another great vid, Brad.
...that Count Chocula is fantastic.
Joel Spaulding that’s why I just buy lots of blue ribbon, to capitalize on the fact that I can’t afford nice beer.
🔥🔥🔥🌡⛽🚒🗽🌋🎂💣💥fire fire fire -Beavis
Love that '60 reissue. Marshall + Gibson = Rock & Roll !!
Hey Brad, It's like this, the Guitologist, Uncle Doug,
El Paso Tube Amps & All American Five Radio are my go-to channels for Tube Amp Information and an entertaining good time. All the best, keep one hand in your pocket, Cass. P.S. Working on 1965 Gregory Mark 1.
Thanks, Cass. Nice to be in good company.
I knew before I read your comment, regarding George not building that amp. The man takes pride in everything he does. He doesn't half ass Anything. He's the best and most knowledgable that there is, besides Dave Friedman. That would have Never Happened if George Built That Amp. I assure you.
Lord Jesus it's a fire. I love it. Laughed my ass off when I saw that caption
That thumbnail is freaking hysterical!
Brad the Guitologist stars in " Excitement She Wrote! " Ha! That's one way to wake up! Fast reaction man.
I’ve I’m being honest I’ve never seen any other amp but Marshall go on fire. I just had a comb back in the 90s mid rehearsal just start frying.
GREAT LAKES that's from my old home town of Cleveland. Great Stuff. Miss it. Get the Christmas Ale when it hits around October. They were the original and have the best.
For a moment, I thought you'd picked up a hot handful off the HT. I once bought a non-working Peavey head and picked up a good few jolts while testing it after repair. 600V can sting something fierce.
Never noticed the Count Chocula statue! Cool!
I miss Mojo Jo Jo.
Haha! The Powerpuff Girls! My kids used to watch that when they were young!
Y'all see how FAST he blew out that little flame?! Yep... this ain't his first barbeque....
I really like the way you play guitar wit your fingers, it gives a bit of a southern flare to your classic rock sound.
"Looks budget" =" like shit" ! ;-) Thanks for sharing this Brad ,always fun and entertaining !
Love the way Brad bleeps out "bullshit" at the start, but then leaves in countless "fucks" when the amp catches fire
You should have played SMOKE ON THE WATER
Ron C *..........Technically
🎶“Smoke On the Mar_shall” 🎶*
Wow this thing sounds great! I'm going to have to look into one.
- Says effects loop could be a problem and needs to be checked out.
- Never checks or demos effects loop!
Top notch 😂
Fire Fire Fire ! I Am the Great Cornholio ! Great vid dude !
Dang you blew that out quick! You must be a monster at birthday parties.
There is nothing like the anxiety adrenaline spike, from an impromptu arc-weld.
Good grief... sloshed coffee all over my lap when ‘that’ happened!! ... Great way to wake me up! LOL :) How have I made it to 50 yrs old and not known about these amps? I was hoping you’d fix that fucked up job on the mini switch, but that’s just the OCD demon in me... LOL
Someone def used their soldering iron to make that hole for the FX loop switch lol. I like the vents on the top of Marshall amps, i want my tubes getting as much air flow as possible, but hey thats just me.
Hide the children!!!'
Brad says "fuck" numerous times starting at 10:18.
I just love it when that kind of shit happens. :-)
great playing and tone
Good Amp Techs are made, not born. And this folks, is how they're made! Forged in fire. haha!!!
Awesome Channel. Thank you for all you do.
That reminds me of the story Eddie Van Halen told of when he was monkeying around with a Marshall head in his room that he bought from the music store he was working at. in his words: “I opened the amp up and saw this thing. I found out later it was a bias control, which controls the power to the output tubes. I’m poking around, and all of a sudden I touch this huge blue thing. My God - it was like being punched in the chest by Mike Tyson. My whole body flexed stiff, and it must have thrown me five feet. I’d touched a capacitor. I didn’t know they held voltage.”
Ain't nobody got time for that!
Aint got no shoes or nothin
As soon as I saw the failure and and flame, I swear, shortly after I could smell that familiar electronics failure smell ~ Interesting psychological correlation
Holy Goodness G-man! THAT was exciting! Good job...I really dig your vids.
"I don't drink a whole lot of beer," but when I do I'm prone to amp fires.
Love you brother. @ 1:07 and 10:23
It's a dangerous job, glad your OK.
Imagine it's 200 years ago and all you have to communicate with are smoke signals. How lucky would that be!?!
I doubt 200 years ago I'd be accused of cultural appropriation for using smoke signals.
:-)
Don’t probe me, bro.
Troubleshoot and fix. Thumbs up. And a beer bonus.
Play... Come on Baby Light My Fire!!!!
I'm sure someone mentioned it but 50 watt Marshalls did not have the top grill only the 100's did.
LMAO...Love your vids Bad...when I saw the title, i was thinking major blow up and fire...I used to do MV line work...when a 12Kv line would go, now THERE'S a fireworks show! Keep up the great work and vids man. Peace out! :)
Finally a video i can relate to. :)
LOVE the Instant Replay ! Who ever thought that amplifier testing could be so freaking exciting... Bruh... Whew... SMH
Ive had that plate-heater arc happen as well. Gets the blood pumping!! I had.to.replace.my socket , it was full of carbon haha. It's cool that yours didn't burn up.
It's definitely a kit amp.. not a bad build but metropolis builds are some premo sheit.
Holy crap! Shows that b+ isn't just a number
Can you link the lung infused fire extinguisher in the description box please 😁😁😁😂😂😂. Fighter pilot reflexes Brad. It's lovely to see that LP paired with the Plexi.
LMAO "WTF! WTH!" I nearly spit my pepsi all over this laptop.
Reminds me of connecting a scope to an amp without using differential probes or an iso transformer- BANG POW!!
The effects loop is a Metro product as well, and it’s upside down. There’s settings on it that need to be adjusted after installation. That’s one hell of a soldering iron to go through plexiglass AND aluminum!
I had a 100W superbass in the 70s which blew the ht fuse several times. Why? - the EL34 sockets were dirty from dust and nikotin and got conductive. After scratching them clean the ht fuse didnt blew anymore.
Pyrotechnics,a Marshall amp, a Les Paul, sounds and looks like rock&roll to me !
Nice music you made up at the end, making yourself move.
Mr. Guitologist, discovered your channel just recently and after enjoying several of your videos I have decided I could drink a beer with you!. I too am an Ohio River rat originally, don't care what my hair out clothes look like. Wanna hang out undisturbed in my basement with my guitar toys! Also you have no hesitation to call out an asshole when necessary! Now in my 50's I really appreciate others who call out dumbfucks! So yea, good beer buddy I'm sure! Keep it up brother!
Welcome to the channel.
@@TheGuitologist also you replaced Sasquatch as my go to fall asleep videos. Not an insult I assure you.
facebook.com/marketplace/item/461258657956243/
Thought you might be interested
In the Eternal Words of the late, great Phil Hartman's Saturday Night Live Frankenstein:
"FIRE BAD!!!"
RIP.
As my late Grandad would say to me in situations like that, “What’re you tearing up now?” :)
My guess as to what actually happened is this, somehow one of the tube socket pins with high voltage on it got inadvertently shorted to ground, and the pin with high voltage on it happened to be connected to a circuit with inductance in it, maybe the output transformer primary, or the choke that formed part of the B+ HV filtering, anyway, the momentary short-circuit caused a huge Back-EMF spike which triggered the formation of an arc between the pins.
Perfect guitar choice for that amp demo.
"Come on baby light my fire"
😂
“Try to set the amp on...Fire!” 🔥
*Like watching you work on amps Brad. By the way Smokey The Bear tweeted he wants that exact 🔥 mod in his amp too 🚒🚓👍😁*
If you like ale, try some Shock Top. The best ale made. That grille in the back is just plain ole hardware cloth, at least that's what they call it.
Hey quickblow that's the fastest response time ever Scariest one I've seen though was a 12 inch mini lightning bolt that went up from an amp on my bench and grounded onto a CRO above and not on us Ozone and fear filled the room We were afraid to go near that amp for a while and realized Tesla was a brave man Coffee break was very long indeed
Great playing at the end mate, gentle feel and awesome touch dynamics
The amp sounds fantastic, very chewy and Marshally.
Amp's got nice voicing. Also, cute summer haircut Brad! Hahahahaa! Cheers dude!
10:32 That sounded exactly like Shaggy from the old Scooby Doo cartoons! "Holy shit! What the fuck was that, Scoob?"
That was the hardest laugh I've had all year!
I need a new fire extinguisher in my shop, extra baking soda or something...... lol I'm fortunate that hasn't happened to me....yet. God forbid! Knock on wood! Anyway enjoyed the vid Brad. Thanks !
it's called expanded metal. that's the gold mesh stuff used for the vent screen.
Dude, I'm just glad you're alright!
How could we miss it. Scared the crap out a me. Ya know, there's no reason to increase the danger factor just for ratings lol. Seriously, thanks for sharing that. Enjoyed your playing too, thanks
All's well that ends well. Sounds great with your Les Paul. I've always heard good things about Metropoulos.
10:23 Best reaction ever 😂
Nice sound and playing!
I think the tension knowing it was going to happen was worse than had it happened with no warning. at least you know what and why it happened. as for Fn'H ! expletive; i'd rather screw in paradise, Good stuff.
Great video Brad !.............I like to move my Presence in the back and install a MV in front where the Presence was!
It doesn't screw up the looks of the amp and we almost never touch a Presence know once it's dialed on it's sweet spot !
If I were to build an amp with a 3C22 disk seal triode (which I may do one of these days) it'll definitely be vented out the top. The 3C22 is a UHF tube first used in radar jamming equipment, but apparently it works quite well as an audio tube, and can be used in place of a 6550 with slight modification and around 500 volts on the plate.
10:24 It deserves an Ozzy Man’s Review
Are you now a player in the TH-cam thumbnail infinity war? LOL!
SRT Amplification yes, and Sweet Brown is my secret weapon.
He didnt have no shoes or nothin, Jesus.
If you like Great Lakes, try burning River Pale Ale. My fave.
Nice playing!All that trouble is for the sound you get,with a "Marshall" clone,or original.Had to replace a transformer in a "6550" tubed Marshall,years'ago.Bias problems' and incorrect fuse on the transformer.Lots' of fun! ; )
Metroupolos amps are bad ass.
Nice work. I think you are an amazing player as well. Nice country runs brother. Love the channel and i continue to learn a lot from it. Thanks again brother.
I hate accidental probe welding.. I am a mechanic and one of my coworkers was funny to watch with his power probe lol if you know what that is you can see where this is going... there should be no welding inside your fuse box or relay center under your hood lol!!!
Brad my name is Stephen and I live in savannah Georgia where there is only one guitar shop in town and as someone learning about guitars I'm having a tough time finding sources for good information on how to set up guitars any advice
For setups, I've done some vids, search "Guitologist setup", or check channel's like a Randy Shartinger or Will's Easy Guitar.
Ain't nobody got time fo that!!