How to repair Fender Deluxe Reverb Tube Guitar amp dead channel and random pop when power applied 

Just found your channel. Definitely subscribed, you do thorough work which is rare this day and age. Kudos.

this is what I've been waiting for! thanks terry!

I always love watching what you do and your common sense fixes! Thanks for another cool vid, Terry!!

Extremely valuable schooling!! Thanks a bunch for this one DLab!!

Great work again Terry, as a guitarist always love to see variations mix of vintage ham radios and guitar amps.

I really appreciate you showing the actual work being done, I don’t even care that your hands get in the way!

Ha! Great to see you fight with the eyelet board like the rest of us, I thought maybe it was just me. Great video, as usual.

Fabulous, just what the doctor ordered to soothe my cabin fever. Loved seeing the blow by blow soldering. Very good for morale to see the pros get hitched on tricky bits too. Great work D-Lab!

Very tedious work awesome job as usual Plus you are the man

Another Great repair Video Terry!!

A1 repair. Very good to see that Fender put back into service proper. NEXT!!

Oh No ! Not the old popping cap cage!!!!! LOL Terry you are the best. great video/repair as always. I love Tube Amp theatre.

That was some great sleuthing on the tube socket !! Also - some very informative CAP info. Thanks a ton for a very informative video !! ;) ;)

Well done Terry . Same here . I always cast my eye around for other issues and check it over thoroughly . I would hate for an amp to come back . Best regards and stay in the workshop for a few weeks until CV is all over . I'm slowly drinking my way through some nice Malbec red wines . Cheers Tony .

Great video... The overhead shots work well...

Good job Terry!

Terry, the reason for the 2w- 100k plate load resistors is to lesson the thermal noise. You are better off to leave those resistors alone unless they have drifted.

Not an arcing rectifier. My guess was wrong. Very unusual fault, well done for finding the cause.

I like the OH camera. Thx

fabo vide Terry one of my most favorite amp to work on

Good work!

Great video

Terry vibrato is an Italian word pronounced vībrahtō. I love your channel. You teach me many things. I hope I don’t offend.

You're absolutely correct - those 100k's don't need to be 1W. Never thought of that before, but you're correct. The 1/2W 5% will do fine, with lower noise factor as well.

HI Terry, LOVE your channel, keep em coming and don't worry about all the trolls who've never even heated an iron complaining from their mother's basement. Anyway, the reason Fender used those big 1W plate resistors is because they ARE quiet compared with the 1/2 watt carbon comps. Same reason Matchless uses them in their amps. Those carbon comps have a very slight pleasing distortion (especially in spots where there is some current flowing) that is part of the vintage Fender sound. Great work as usual, love these videos!

thanks! i've been questioning whether i should replace the last 2 resistors in the neg bias line of my super champ--this (& another thread over on tdpri) is pushing me towards 'yes'

I also use The M150 caps but stopped making some of the values I used rebuilding my old radios and audio gear Terry

Good job

Very nice.

This was excellent Terry! I learned a bunch in this one and it was nice seeing some of the troubles you go through during the repairs! If I need advice for something I’m currently building, can I reach out to you? There are 2 areas I have some questions about. I can send a vid?

love your videos, can you recommend any books or videos to learn how to do this? thanks Terry.

excellent

BTW, not ALL ceramic caps are bad. There are different types, and especially the C0G (NP0) are VERY temperature stable and often perform even better than certain film capacitors. They are probably difficult to get for these high voltages, but for low voltages it works great (and they are a lot cheaper)

Does the replacement of the .047u with the .022u caps mello the tone of the amp at all?

I grab my Kodak and take close up photos for future reference when I work on my PC.

?? Terry, I've got a Hakko 936 clone solder station (TekPower TP936D 40W maybe?). What tips do you suggest I have on hand for this type of work? It appears I can use the 900 series tips with this thing.... Soldering on heavier objects (pot backs & such) has always been an issue with the pencil tip it came with. Thoughts?

"Do it right the third time", now that's a moto to steer clear of

Looks like the cover for the supply filter caps has been replaced.

Don't you want to replace those wires? Every time there's arcing the insulation breakdown voltage goes down By the way I'm curious about that wire curled like a spring around another. Is that an half-assed shielding?

Oh, nice Kenwood R-2000 Sitting over your shoulder.

Hi Terry, I am happy to talk with you. I have just a noob question , I hope not to be disturbing. ¿What kind/brand of video camera do you use for your videos?. Your camera just souns preety amazing to my ears, and your advice would be of great value to me because I work as a music teacher, and have the vide quality I need for making my video classes do to the quarrantine. Thank you for all your info, I am finishing my amp recently, and I always watch your videos searching for advice. God bless you.

So what was going on with the bias circuit?

I have a Fender Twin Reverb Reissue Blackface with a completely dead channel (normal). Back story, this thing blew its mains transformer, so it has new mains transformer, new filter caps and resistors, new set of tubes, but still dead normal channel. Ideas?

Good thing you wasn’t touching that cover at the time of the issue!

Terry, i have seen the Techtronix 391A meter on Amazon for about $180.00. For about $20.00 more there is one that is calibrated and comes with a certificate. Do I need the calibrated model for tube amp work?

"Chocolate Drops"...? I've always called them 'Brown Turds'...

Dlabs, what is so special about using those yellow Mallory M150 series caps? I don't get why you use the M150 series any reasons why?

Metal film resistors are much more quiet and hold value better, than the carbon composition resistors.

Snow Pig says I'm first. :)

Test the turds for value and leakage. I bet they are perfect.

If there is fair about of wax on the board shouldnt you suck the solder out of the hole before removing components?

Mr Carlson says that these yellow caps have polarity placement

the previous work looks catawampus

I'd have a panic attack if someone asked me fix something like that.

No Terry they don’t Call them chockolate drop caps, they call them Brown turds

After the easy fix you decided to change all those caps and drifty carbon resistors. I am really surprised you did that unless the owner wanted you to do that. Leaky caps and drifty resistors may have done so in a way that the player likes.

Dog TUUUURDS!

You added a current sense resistor, it's not a shunt resistor!

What happened to the unger in this video? Hmhuhuhuhyahhyahyhahyahyehyahyalyakyak

Why change the 3 caps in the oscillator circuit? there's no signal going through there. Besides maybe the little bit of microphonic in the disc caps in older amps is part of the mojo. I've noticed that old tweed solid core grid wires in the preamp are microphonic if you tap on them. Who says that's bad? I think it's part of the sound Change my mind.

"vibRAYtoe"? No it's "vibRAHToe"

Well. My apologies, but I'm about to quit RU-vid because of all the lying Biden ads.

Great video