I LOVE that you take the small amount of time and effort to ensure that the cap values can be read from the top.

I like your "thinking out loud" approach to these videos. You are getting close to 30K subscribers! I was with you at the 5K level or possibly before that. I'm glad my 70's Deluxe Reverb is hand wired. Even someone like me was able to recap it, replace bad resistors and even correct a couple of wiring errors a previous "tech" did on it.

I’m always amazed at your ability and diligence to not just make the amps work, but improve their performance. Thank you for sharing your knowledge Sir.

This was a good school session for the d r reissues.

Once again many thanks Lyle, those of us that have those promising but frustrating amps really appreciate your sleuth work!

Thanks for all your excellent info Lyle!

Thank you for sharing your knowledge and expertise as always Lyle.

Always enjoy your informative videos.

I learn something new with every one of your videos - you find interesting faults.

Keep doing what you're doing . Built 2 se kt88 5879 amps and love them.

Yep! imperical and practical knowledge solved these issues. Excellent video !

knowledge & experience Lyle can fix alot of things! You did exactly what I would have done! Bravo!

Nice work and great advice as usual delivered humbly of course as usual. Thanks!

1 i really appreciate all your videos, 2 i hear you say a lot "Leo would have fired x" I like to think Leo or whoever would have looked at poor work and then trained the person to do it well

I'm here from the Tone-Talk Q&A ! Enjoyed that interview and looking forward to this channel... I'm not a tech or even handy though I took some E&M physics 100 years ago... hoping this channel might fire some synapses of yore

Appreciate you work... very enjoyable to listen to.

Ah, the old K.I.S.S. principle! Looking forward to seeing you on Tone Talk tonight.

No... You wouldn't say it. But I will....You sir...ROCK 😎👍

Fantastic video, thank you

Well…I know to whom I will be sending my 68 custom pro reverb for repairs and reliability upgrades👏 love these videos

Thanks... great lesson in troubleshooting

One of your better vids! Of course they are all good…

I really don’t understand much of what you’re saying like micro farit this and flux capacitor that, which I’m sure I spelled wrong! Nevertheless, I cannot stop watching you work in all these vids and listen to you explain things…you truly are a master at your craft! If my DRRI ever craps out I think it’ll be worth every penny to send it across country for you to work your magic👍 GREAT CHANNEL

Thanks!

I can't believe that Fender hasn't improved it's amp building when folks like this keep flagging up faults.

Great video thanks Lyle! That 220uF turned into a half a none-o-farad capacitor! Dreadful luck its resistor went open circuit! Do'h! As so often happens, the 'protection' circuit goes faulty.

Believe me simplicity is the mother of all invetion.

Lyle, I love your videos and learn so much from watching them. You have a great eye for the small details and customer service. I've noticed that you don't do any 57 Deluxe Reissue Tweed amps. Wouldn't those amps also benefit from upgraded Caps and components?

LOL! I correctly diagnosed this right from the start. Face-palmed when you didn't do a simple tube swap to rule it out.

Great demo . Do see you point that the need for ESR cap test is not need when you know it a bad cap. ESR testing is good for the less well experienced tech. So the 18k resistor is to voice the bass tone circuit in a way not wanted by the player . Bell and Whistles for no good use . It not bragging when you deliver . So 45 years ago heard a very good surgeon say in front of me it what I know not what I have to do that your are paying for . You can have cheap , right , or fast but you only get 2 of 3 you choose.

I have one of these amps, I am generally happy with it but I do notice that the bass is kinda booming and I think what you are saying around 7:45 kind of explains that, thank you.

I consider myself a smart man, and as a smart man, I accept your a smarter man than me when it comes to guitar amps. I think I'll take precautionary measures and just replace the caps in my deluxe.

The more I think about it the more I realize that channel switching amps just do the same thing two or three or four times. And it's all a compromise. But it is nice to have two amps in one if they are both good.

Lyle, as far as tremolo thud, have you ever swapped in a sovtek 12AX7C for the tremolo tube and it reduce the tremolo thud? I've ran into that. BTW, I liked this one because it was a bit unexpected. Like to see that.

Is there a higher voltage 40 uf cap you could substitute for the 500V MOD & keep the option open for the solid state rectifier replacement?

Interesting. So my amp has been humming off an on when I turn the reverb up. I did replace caps not to long ago. I have no idea if they were power cap or filter caps. If there’s even a difference .

Do you find it necessary to also replace the cathode bypass caps, or just the power supply related caps when one comes in like this?

Do you take these amps straight from the box and do a complete setup so they work as they are supposed to. I like the 65 Deluxe Reverb and had an original. I want to have that unmolested Fender tone with a properly set up amp. I just need a well skilled tech to make it happen and a price.

Lyle, which of the two channels in a Deluxe Reverb has the most volume and tone? There seems to be a controversy over which channel would be the one to chose if building a single channel Deluxe. A tech friend and I are on opposite sides of the issue. ❤️ your channel! Thanxz

What would I need to do to slow down the tremolo speed in my 68 custom deluxe reissue amp? I never use the highest trem speed setting so it wouldn't matter to me if that was affected.

What are your thoughts on a12au7 on the phase inverter? Would this require a rebias?

Those are a good multimeter for the moola. Do the Al Green riff, will ya?

Where do I get the caps? Also, that circuit on the bass pot of the first channel, just remove it? Nothing more just cut it out?

Does the 64 Custom Handwired have the same noise floor? It also shares channels

That lead dress issue really surprised me - seems as though it's more than a QA issue, but a layout issue. Leads sensitive like that should have been 'designed for manufacturing' such that they'd be optimized for minimal noise and then -- immovable. Am I missing something obvious?

That's the whole circuit board from a 68 custom deluxe ri ?

I’ll take a 65-67 BF tube amp any day. They sound warmer! Great video though!

does running the reverb circuit without a tank fry the reverb transformer? I've heard it's pretty much like an output transformer, you don't want to send signal into it when it has nowhere to go. your thoughts?

Series caps that aren’t the same value or voltage rating… Just asking for trouble

Question, if you can help me..... I have a Bogen CHB 100 want to use for home audio.. why does the 750 Ohm 7 Watt ( doing choke duty?) anyway , it flames out time and again even up to a 25 Watt replacement? If you can help, would be greatly appreciated. Thank you!.

Why is there 400v on the reverb driver in these amps? That tube runs crazy hot in my 79 DR

How do the MOD capacitors compare to F&T and Sprague? Are they just as good or are they more comparable to the IC capacitors?

Isn't the essence of modern (post blonde era) Fender and Marshall amps "added complications"?

At 0:53, "OL" stands for "Overflow"!? Who knew? Electrons leaking out and forming a puddle on the floor? 🤔🤣

Can someone please tell me if there's a Lyle video reparing or working on a red knob Fender?

I don't care what Brad say's. I stopped watching hin last year when he posted the vid of him breaking LP's and dropping F bomb's and getting political. never watched him since. Angry politics do not belong in amp repair video's (or, frankly, anywhere else) I like yer stuff, Keep it up! :)

Amps just aren't built to last now, they're designed for the convenience of the manufacturer rather than for reliability or serviceability and aimed at bedroom players who will never let the amp roll out of a tour bus.

Those 68 customs are good sounding amp’s but they do tend to be noisy af. Sometimes obnoxiously so. That said my #1 amp is an original 68 Super Reverb, from before they were all changed to the silverface circuit, and it can sometimes make noise too. But at gig & rehearsal volumes it’s not an issue to me. The only real problem I’ve ever had with it (other than having to lug its heavy/awkward sized ass all over the PNW) is at one certain venue where I’d occasionally pick up the 10’ Clock news. I’d literally have Dan Rather coming through my speakers & everyone in the club would burst out laughing. It wasn’t funny to me though - it was freaking embarrassing- especially when it happened during a quiet bridge or intro part. When I’d plug into a different outlet it would usually go away. And since it was intermittent- you might get through half the set list before it’d happen- so sound check would never seem to catch it.

Hello,thx for posting! How to get rid of the white noise on these?? I was about to buy a 68 Deluxe and finally went another way because of this stupid white noise lol. Sad because it sounds good and is a beautiful amp.