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BF Super Reverb in for a Tune Up.....Botched Wiring & Bad Tubes.....but a Happy Ending
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- เผยแพร่เมื่อ 16 มี.ค. 2023
- In this video we will document the repair of a 1966-67 Fender Blackface Super Reverb circuit. As delivered, it had some serious wiring issues and worn-out tubes, including a 5U4 rectifier, rather than the proper GZ34. These problems allow for a discussion of repair theory as well as demonstration of the relative performance of the 5U4 vs GZ34, both with and without a Current Limiter in series. A demonstration of tremolo speed reduction is also provided. As usual, an audio demo is performed, including each of the effects......tremolo and reverb.....at various levels. We hope you enjoy it.
If you do enjoy our videos and would like to support our channel, please consider becoming a patron of our channel via Patreon: / uncledougsvintageamps or making a PayPal contribution to dldcam@aol.com. Thanks !!!
Having a fresh Uncle Doug video queued up on a Friday makes my weekend plans even better. Thank you for the content and expertise!
You're welcome, Scott :)
@@UncleDoug Hey Uncle Doug!
Hey got a tidbit of info, on my question about solid state amps and final ohms for lower output. I have just been told from a company that yes running an ohm speaker that produces max watts does in fact stress the internals more than running it at lower watts! Seems even some Marshall would have reliability issues when running a speaker with an Ohm rating producing max watts from the solid state amplifier! I have since altered my speakers/cabs so my solid state amps run at lower watts since I really don't need the extra volume as much as I do the reliability and longevity of my amps! Take care Uncle Doug!
@@kennyh5083 Thanks for the info, Kenny.
I agree. It was a nice surprise!
You should make a compilation video of your most outraged moments, because I'm sure I'm not alone in finding you at your most hilarious!
A Sidebar: I've been watching your videos for many years and dare I say that you seem to have been noticeably getting more accomplished at playing the guitar. Kudos.
My playing has been getting worse the past few years due to lack of interest and avoidance. LOL
Then you need to find a couple feral musicians, like Ollie & Jack, to cover for you ;)
Heck yeah! Uncle Doug is the man! He's the uncle we all wish we had. None of my real uncles do anything this cool.
Thanks, Mark :)
That was a botched power cord install you found, Unc. The blue is neutral, brown hot. So the hot side was fused and looks like the neutral originally went in and out of the two outlet lugs, so the amp wouldn't ever turn on unless something was plugged in to that outlet, and being in series with the neutral, whatever was plugged in wound up being a current limiter. After the fire, someone then moved the neutral to the same lug.
Thanks for your analysis, SR. It was indeed a mess.
Every time I hear the demos at the end of your videos, I get this vision of Jack standing on his back legs rockin out on the guitar. Makes me smile. Another great video. Thanks for sharing. Take care.
Glad you enjoy them, VGA :)
Ironic that they should destroy the safety sticker lol
We love ya Uncle! Even when I don't necessarily understand what's being done, your videos are always worth the watch!
Yep, they went right for the most ironic spot on the panel :)
It's always a good day when a new Uncle Doug video comes out! Thanks again, Uncle!
YW, Rick.
Uncle Doug, the best and most entertaining amp technician in You Tube Land. Thanks for another great video
Thanks, Steven :)
It's nice to know that even badly botched amps can be brought back to life. Thanks for sharing the repair and your knowledge.
You're welcome, Rohan. They're all "fixable" :)
I was too busy to wacth this at least that's what I told myself for the first 15 minutes and then forgot what i was supposed to be doing, you make it so entertaining as well as educational! Thank you
Glad to hear it, Doug.
"We love a challenge (not really)!" LOL Very funny Uncle Doug! What a mess. Amazing work!
Thanks, Bob :)
Oh, good uncle Doug is back on the line! I really like your detailed descriptions of the failures of ancient American amplifiers. I myself am repairing tube amplifiers in Europe, and your comments are very useful to me sometimes. Thank you very much for your selfless exchange of useful information!😁👍
You are quite welcome. Thanks for watching :)
Fantastic video. Gotta love Blackburn made tubes.
Glad you enjoyed it, Jules.
Always something to learn and do…. May God bless you Uncle Doug.
Thanks, Lynn.
Great video as usual Uncle Doug! Every time I see you have a new video out I’m happy and relieved that you’re still in good health and working on those great amps! Best Rgds
Thanks, Alvaro :)
I just love me sum good ole Uncle Doug,,,best channel,,still !!! I thought perhaps the feline quartet was in Mexico on spring break,,,happy to see they followed the new warnings and opted to stay home this year !!!
Thanks so much, Tom :)
A great demonstration of corrective surgery, Uncle. The previous reprobates ("techs") were reckless, amateurish, and incompetent. It was a complete joy to experience the process in diagnosing the mistakes that were made, and explaining your detailed flow chart of the modality you employ in the step-by-step approach to repair the circuit by compartmentalized order. Thank you for posting! I await this next episode with great eagerness. Enjoy you weekend, uncle. Stay safe and in abundant health.
Thanks so much, Alex. Glad you enjoyed it. Likewise on the good wishes :)
I bet you cant even solder without burning yourself.
The mains cable is from a European source. The brown is Live/Hot and the Blue is neutral return. Green/yellow is the earth. Europe, UK and surrounding area usually run from 220v AC 50Hz.
Thank you for your really valuable videos. I have spent many hours watching with a great deal of fascination. I do the same kind of work here on a much smaller scale, in the UK and likewise, have found a great many short cuts other 'technicians' have cobbled together to try and make things work. Consequences can be really significant.
Thanks for your input, Robert.
Uncle Doug does Led Zep & does it well. Cool results - repair of repairs.
That's Ollie's specialty, Ray.......she's a big fan of Jimmy and the gang :)
It's good to see an amp tech that knows what they are doing! Another great video Uncle Doug!!!
Thanks so much, Michael :)
Pizza, beer, and a new Uncle Doug video. This is turning out to be a good Friday night!
Bon Appétit, NN :)
Always a great day when an Uncle Doug video shows up in your feed. A million thanks for sharing your expertise with all of us UD heads!
Glad to hear it, Scott. Thanks !!
What a great day! Happy St. Patrick's Day, Uncle O'Douglas.
Thanks. Likewise, VTA :)
Uncle Doug you are the best thing on TH-cam.
You are too kind, Cade......but thanks ;)
Allways love your comtents and Saftey notes we all need a smile have a great day
I'm glad to hear it, Lane. Thanks.
Hey, thanks so much for everything you do Uncle Doug. I've really learned a lot.
Good to hear, Matt :)
Another classic American amp brought back to life from Uncle Doug.
I finally figured out what one of those hooks was that you play sometimes in your videos, Brian Adams Run to you.
I had thought to myself and checked on TH-cam and sure enough, lol.
Thank you for the video. ☺️
Thanks, KB. Yes on the BA tune :)
That 3 wire power cord was installed backwards. Brown was hot and blue neutral. Glad you changed it!
It was a mess that had to be redone properly, Duane.
Nice job on that beauty. No drama just cool confident experience. Looking forward to your upcoming video.😊
Thanks, Phillip :)
Great to see you back Uncle Doug!
Thanks, JF :)
The biggest gem in uncle Doug's workshop is uncle Doug!! 👍
Aw shucks, Derek ;)
Great sounding amp. I love P-90s. They are my favorite pickups. Well done Sir, this will last a long time and give great joy to many.
Thanks, Sarge. I sure hope so :)
I miss you uncle Doug! I hope you and your loved ones are well. I have this exact amplifier and your video helped me a lot. Recaped, new power cord, and modded the tremolo with that 0.2 cap =)
I'm loving those MOD caps. I have used them in 1 princeton (also help from your video), two Twin Reverb SF, and now this Super reverb but mine surely has the center tap for the 6.3v
Thanks for the kind words, Daniel. We will have a new video posted in the next couple weeks :)
I retire at the end of March (2023) and now Tom has the answer to my lost tool/cluttered bench problem! The best ideas are the simple ones; great thinking Tom.
Glad you liked the invention, Paul.
I was super excited when I got the notification about another video from Uncle! You are a great teacher Uncle Doug! No doubt you know your stuff!! Thanks for sharing your gift!
Thanks for watching and commenting, Mitch.
What a cool audio demonstration! Once I sit down and solve all song snippets you play ;-)
Glad you enjoy it, Tibor :) Some are Jack & Ollie Originals.
So happy to see a new video, made my morning. Such a shame about the hammer mechanic who worked on the wiring, & of course the carnage on the back. Still it would be a nice amp to gig with, so all is not lost.
Thanks for watching, BiG.
You can buy replacement front panels for a blackface Fender, but I don't know if reproductions of the rear panels are available....
@@goodun2974 Nor do I, GU. My advice would be lots of internet searches.
I am laughing my arse off over that Previous Tech? ! Butcher is the correct term for him/her/it, LOL!
I agree, but pity the person who paid to have the work done.
Thank you for all these videos over the years even an old tech like me can learn something new from you
You're welcome, Doc :)
What a great way to start my morning! Thanks for posting this video on an led b.f. Super Reverb....I have one and love it🎸
Glad you enjoyed it, MP.
Best YT channel ever, thx once again, Uncle Doug.
Thanks so much, HV :)
So nice to see you working your much needed magic once again!
Thanks for watching and commenting, David.
Uncle Doug you are a class act so through with your videos God Bless always from a fellow electronic tech
Thanks so much, Ed :)
Uncle Doug, I think had you checked, you would have found that those are UL certified reference pillows. Pure gold. That amp was tucked in lbetter than a TJ Tuck and Roll special. Note: The three wire power cord wiring was coincidently also done in TJ, but in the red light district. Hot Chihuahua!
As always, thank you very much for all the expert discussion on how to do it right.
Thanks for opening my eyes to just how special the packing material was, Trebor. I'm tempted to sell it on Ebay ;)
It''s always a treat to tag along on your repair adventures UD!
We enjoy your company, SG :)
One of my favorite parts of a new Uncle Doug video is to hear what he will say about the packaging job.
As a result of my public unboxing scenes, the overall quality of amp packing has improved dramatically :)
@@UncleDoug most definitely. 4 out of 5 five packing peanuts comment. Course of them shifted to wrong spot :)
I also grant you 3 paws up Uncle dude!
Well done and thank you! ✌🏼
High praise indeed, A :)
At 4:35, using the transformer mounting bolts as ground points for the artificial heater-winding centertap, the main AC winding centertap, the negative-bias supply 😮😮, and the power-cord earth ground, is a very very bad idea. It is best to solder those connections directly to the chassis. The vibration from shipping and transporting the amp, and actually playing it through a 4 speaker cabinet, plus the mass of the transformer, is a recipe for shaking those nuts loose on the bolts even though they have integral star washers. Galvanic corrosion from the different metals involved is another possibility.
Thanks for your input, GU.
The star washer isn't there to secure the nut. It is there to cut into the chassis to ensure a good electrical connection.
@@EJP286CRSKW , A star washer underneath the nut, sitting on top of the solder terminal, does nothing to bite into the chassis. The solder terminal(s) sometimes have a tooth washer built in but the terminals are often too soft to really bite into the chassis through the plating and surface corrosion, and anyway don't do much to prevent the nut from loosening. If you use a separate star washer on top of the terminal with integral teeth, or a Keps nut with integral star washer, you can't tighten it reliably excuse the terminal will spin along with the nut and toothed/star washer on top of it.
This stuff all loosens over time; I've been working on audio electronics since the 1960's. Anyway, current electrical codes mandate a separate earth ground attachment. Don't use the tranny bolts for any of this!
@@EJP286CRSKW Even better. Thanks, EJP.
I love your videos. But I really wanted to thank you for just saving me a whole lot of money... I have just been able to diagnose my own amp and the only reason was your superb and patient explanation of amp wiring schematics. I had no previous knowledge of electronics but what I have absorbed through watching just about all of your videos, let me track down where I thought I had a problem and realise that there was a simple fix with no changes needed. Yesterday I was busy pricing up new amps and today I'm back murdering 'Free falling'! You've made a real difference, Uncle Doug. Thank you.
That's really great to hear, Mark. We're so glad our videos are helpful and informative.
I am probably one of your rare viewers that knew what you meant by "drunk chimpanzees" This is a terrible rebuild, no wonder it was all messed up. Thank you again for sharing all your knowledge with us out here in youtube land. BTW saw on Facebook the kitties :) Glad to know you and be your loyal follower for many years.
Thanks, Matthew. On one hand, it's flattering to receive repair jobs that others can't handle.....on the other hand, every such job is a major challenge, beginning with undoing all the previous harm.
Hi Uncle Doug! I have been subscribed to your channel for a few years now and have picked up a bucket load of information on the workings of guitar amps. l want to thank you for being a wonderful teacher and preventing me from zapping any of my remaining hair off! l love listening to your verbal cantor but if you think your having a chilly day feel free to visit us up here in Canada! Lol! Thanks again and l look forward to many more videos. By the way l also like your hot rod stuff!
Thanks so much, Chris. By coincidence was really cold and windy.....at least by West Texas standards.......so no trips to Canada are necessary ;)
What a result, we are both above ground.
I am working on getting my head to work properly again, and you are a very positive influence.
Thanks.
Best of luck, LR. We hope we can help.
I'm a retired electronic technician and I love your amp videos, and your wit. Breaks my heart and I always say a eulogy for every vintage electrolytic capacitor that has to be sent to the graveyard. lol My '69 Fender Bandmaster & '73 Super-Reverb still have all of their electrolytic caps except for two power supply filter caps in my '69 Super-Reverb.
Thanks, Tony. In my own amps I tend to preserve original components, but I just can't do that with customer amps......unless specifically requested to do so.
@@UncleDoug I like to to keep vintage stuff when I can. But, yes, your modernizing of old amps will for sure benefit your customers to enjoy an amp that will be very reliable for many many years. Leo Fender in my opinion made the beast amps ever made with the Blackface amps. Dumble was the next evolution of tube amps. I own a Dumble clone amp and I love it.
Hadn’t chimed in since late 2022…After you installed power cord, that white wire scared me lying against the 6L6 socket and also the screw threads…Love the video!! You are the Beat!! Still working on my 68 Fender Bassman
I'm sure I corrected the wire routing eventually Jammy. It's good to hear from you :)
Oh, just one more thing (I'm in Columbo mode😊): I suggest you put a jumper wire between the input terminal of the bias pot (where the negative voltage enters from the bias supply) and the wiper terminal. This will ensure that you do not lose negative bias completely to the output stage if the wiper connection becomes intermittent inside the pot; The negative bias would rise fairly significantly and the output tubes would be running a little bit cold, but they wouldn't go into thermal runaway and turn cherry red and self destruct, as they would if the wiper of the bias pot as factory-wired were to lift and the bias voltage to the output stage was completely lost.
Thanks for the helpful tip, GU :)
@@UncleDoug , When you're working on a nearly 60 year old amplifier, it's always smart to ask "what would happen if this critical part failed?" If a volume or tone control potentiometer becomes intermittent or fails, it's no big deal, but if that bias pot fails, you get blown tubes and maybe blown transformers. With that jumper wire added, however, the entire bias pot element, wiper, resistor or ground connection could fail and yet the only thing that would happen is the full negative bias supply would go right to the output tube grids and put the amp into the cut-off region where almost no plate current would flow. (and PS, Make sure the bias potentiometer is bolted down securely to a clean, non-oxidized chassis or you could indeed lose that voltage-divider reference ground; which is why I prefer to solder the resistor to the chassis instead of to the back of the pot).
wow that saying something. "one of the most special amps we've had". can't wait for that considering the amps you've already had. thanks again for being commercial free. you have no idea what that means to me. ive got alittle Neil Young in me too.
You're welcome, David. The moment you accept advertising, you open the door to external control of your video content. I really don't need any "partners" in my little video enterprise :)
@UncleDoug i killed all my channels when they started advertising on them. not only do you get a partner but you are endorsing whatever crap they choose. love ya uncle.
What a wonderful surprise to see this show up in my feed. Thanks Doug. You made my day.
Thanks for watching, Simon :)
Gotta love the mullards! Working on hammonds as i do i always check the junked organs and found a trove of Mullards and vintage RCA tubes, amperex bugle boys, those Hammonds always were stocked well, amd most of them were very mild voltages, so they'll still rock your guitar amp after 50+ years in a Hammond!
Hammond definitely didn't scrimp on tube quality, Sean, much to our harvesting pleasure.
Thanks again for spending time and work to let us take part. I am following your content for a couple of years now and never have been disappointed.
Our pleasure, Doc. Thanks for watching.
Uncle D: You’ve made clear all the mysteries of guitar-amp circuits. At least 80% of my understanding came from you.
Also, your dry humor cracks me up. Finally, I love those furry friends.
Thanks, S2. We're glad you enjoy our videos :)
agree with u he makes his video very enlighten humor and darn good theroy and his kitties are cool to
Hi, Uncle Doug - Great video, I just want to bring up one cautionary issue in that you are utilizing that Elenco 440 substitution box you received from a viewer on an earlier video. I wanted to point out that this cap box is made from cheap 50V & 100V caps of which after a few years they are finally admitting that in their advertisements, 100V max. Could be quite a bang for people seeing this video and figuring " you use that box all the time, I need to buy one." You may want to put a disclaimer somewhere. Don't want anybody dialing in a corner frequency on an interstage dc block. 😉 Again, always enjoy the videos!
Thanks for your helpful input, Bill.
Awesome. Yours is one of the few channels where I will sit and listen to a half hour or more video with delight!
That amp was sure horribly botched and bastardized. It's good that you were able to make it do what it needs to do. No more deflagrations around the input wiring!
Sounds great there at the end, at least as far as the audio from TH-cam can convey it.
Thanks, David. We appreciate your kind words.
Uncle Doug - Thanks so much, you are such a blessing. A dedicated follower of your channel and content from Austria. Just to say a big 'THANK YOU' - Your'e the world's best teacher, with your very simple style, even dummies like me cannot fail to understand the fundamentals of electronics, and so casually peppered with great humor. God Bless you!
Thanks so much, Ben. We appreciate your kind words :)
I may never have to repair amps, but the information in your videos is invaluable in helping the lay person understand how an amplifier works and avoid costly repairs down the line. Having said that, your instructions on how to replace two prong cords for the much safer 3 prong variety has helped me to repair and upgrade an old Big Muff Deluxe that had a nasty broken 2 prong cord. Thanks for that!
Glad to hear that the videos are helpful, VS :)
Great to see you Uncle Doug! I have been missing the vids coming from you. I hope that all is well with you and yours!
Thanks, SG. We're doing fine :)
Love it when a new Uncle Doug has a new video! Long time fan, I learn something each time! Best Amp Tech ive seen!
Thanks so much, MP :)
Awsome as always....never disappointed uncle doug
Glad you liked it, Josh :)
Love how you put green river riff in the demo! You must see John Fogerty for his celebration tour!
Thanks, Mohamed. I would love to......he's one of my major heroes.
Well! That amp was a diamond in the rough! Sounded beautiful after all your work Uncle Doug!
Thanks so much, Mech :)
what looked like some kinda black nightmare at the start ,,
sounded like a technicolour dreamscape uncle doug, the
slower tremolo and a touch of reverb was so relaxing and
easy on the soul, incredible job beautiful tone ! 😇👍🎼
Thanks so much, William :)
Another great video. Without doubt, you Doug are the King of You Tube as far as amp repairs go. I watch them all and no one comes close 👍
I am already looking forward to the next one!! Rich
That's great to hear, RGB :)
Hey Doug, long time no hear from..🙁 Great video, so much info as usual and a learning curve for me as always..Nice to know the UK was responsible for that fab rectifier tube..We're good for something after all..Hope you're keeping safe and well..Thanks for sharing and looking forward to the next excursion..Ed..uk..😀
Thanks so much, Ed. Always good to hear from you :)
Thanks Uncle Doug
You're welcome, Daniel.
Your wall voltage study is important for everyone with vintage amps to see. The original amps were based upon wall voltage in the 115 - 117vac average. Todays USA line voltage is usually over 120vac. At my place it runs 123-125vac. The difference is multiplied by the power transformer by a factor of about 4, so the internal voltages will be increased by roughly four times the difference between the designed for A/C and the actual. While it doesn’t seem much offhand, the working difference between a plate voltage of 440vdc and 485vdc is readily apparent in terms of tone and heat. Pays to employ some form of buck transformer upstream of the amp to reduce the line voltage back into the designed for range.
Thanks for your input, Jerry.
A new UD video! Always a treat!
We hope you enjoy it, Rich.
Another great video, Uncle Doug!
Two years ago I was struggling to build my first amp, an valve jr point to point clone! And your channel was crucial to help me to develop basic understanding of how tube amps works! Now two years later, I’m nearly finishing a Soldano SLO clone! Thanks for sharing your knowledge with us!
Wow, you have really upped your game, Marcelo. Congratulations and best wishes for continued success.
Disconnecting the centre tap for the heaters and installing a pair of 100ohm 1/2W *fusible* resistors has two advantages: lowest levels of heater induced hum and a level of protection for the power transformer (in this case an irreplaceable vintage Schumacher inside a highly valuable amp). Regarding the customer's complaint about the tremolo not only being too fast but also taking too much time to kick in: Fender replaced the 25uF bypass capacitor closest to the phase inverter by a 4,7/5 uF value in later revisions. This can be seen in the Twin AA769 and later revisions, which allowed for the tremolo to kick in much quicker when enabled. Some modifications during the Silverface era may have been questionable but in this case it was a definite improvement.
Agree, a couple resistors is cheaper to replace than a burnt transformer. It's an easy thing to do and prevents heater shorts from burning it up.
Could you be more specific about the location of the 25uf bypass cap that is to be replaced?
@@UncleDoug It's located in V5b (the triode in the tremolo circuit that uses a 100K resistor). An example of a 5uF bypass capacitor can be found on the schematic and layout diagram of the Twin Reverb AA769.
@@sarcophagist4097 Thanks. I was thrown off by the phrase "closest to the phase inverter". Have you ever done a side-by-side comparison to verify the efficacy of this CBPC change?
Nice restoration, you've had worse. Great sound! Thank you for taking time to give us a look and listen.
Our pleasure, Andrew. Thanks for watching.
Your new guitar sounds great and very in tune!
That's good to hear, Alvaro.
thanks again Uncle Doug ❤
You're welcome, Rusty :)
For a lot of people this is education. I can see that, I've picked up a few things.
But for me, I love watching the magic. Might be revealing all the tricks, but I love watching the process, even if it's mostly greek.
Glad you enjoy our work, Book. Thanks for watching :)
Good to see you back sire !🙂
Thanks, G :)
What a treat to start the day, Uncle Doug. I really enjoy watching you work through problems and sharing your thought process with us. I can usually swap parts and make amps work but I run into problems and get stumped. I can usually find one of your videos that will enlighten me and fix the problem. Thanks, UD!
You're quite welcome, Ed.
Rainy morning here a good coffee and a great video to watch. Thanks
We hope you enjoy it, BV.
Enjoyed the playing on the demo :-)
Thanks, Steve. I'll share your compliment with Ollie & Jack.
They’re probably Nashville cats :-)@@UncleDoug
No doubt :)@@steverhenius6734
Final sound check is particularly delicious on this one. Strat with P90s (whassat?) into an Uncle Dougified Super Reverb. Note to self :-)
Thanks, Steven. Ollie & Jack have an extensive collection of guitars and amps.....and turn up with some unusual stuff from time to time ;)
An informative video as usual Uncle Doug.
The guitar playing was good too.
Thanks, MR. I'll tell Ollie & Jack :)
Can't wait for the next video! I'm going to guess a 1959 Tweed Twin.
Smaller, rarer, but about as costly.
Thanks for a great video with so much interesting information.
You're welcome, Grover.
Its always nice to wake up with uncle Doug. Well, you know what i mean.
We can share the packing pillows, Don.
Cool old amp. Nice job on the repair, too. 👍
Thanks twice, BS. Your name reminds me of a previous Silvertone video.
It's a wonder this thing didn't suffer a total meltdown. At least you had something left to fix.
Back from the ashes.......like the Phoenix ;)
New Video !! wooohoo!! Go Doug ! I love working on old amps
Thanks, RV. Me too :)
Glad to hear from you, Doug.
Was a bit concerned having not seen a video from ya for a bit!
Thanks, Vinny. These long detailed videos take a lot of time and effort to produce.
24:03 - That's the FIRST time I've seen (and heard) a Gain vs. Bias demo!
We try to go where no one else has gone before, DH ;)
Great to see you Uncle Doug. I pray you and yours are well Sir. God Bless.
Thanks, Sarge :)
At last, my favorite uncle is back.! Nice to hear from you again sir!
Thanks, B.
Thanks for the video. I really enjoy them. The amps sounds great and the guitar sounds fantastic too.
Glad you enjoyed it, Michael.
Another great lesson. 😊
Love you Uncle Doug! 👍🏻 👊🏻
Thanks, Jamie :)
Sorry uncle Doug .
I came in late on the show today and thought it was a 1970s rockers head band screen saver.
I will come back later.
Please do, Darrin.