Fender Blues Deluxe Reissue - Tube Change and Bias

I replaced a well-used 6-year-old set of tubes that were scratchy and noisy on this Fender Blues Deluxe Amplifier.

0:00 Intro
0:17 Ordering The Right Tubes
0:46 Making Sure It's Not Something Else
1:00 Removing The Back Cover
1:22 Removing The Preamp Tubes
2:11 Removing The Power Tubes
2:33 Installing The New Power Tubes
3:22 Installing The New Preamp Tubes
4:21 Biasing The Amp
5:55 Replacing The Back Cover

[jooles]

Great stuff, clear-concise- and easy to understand because you explain the proceedure calmly and without nonsense. Thankyou.

[robertwiehl]

That was excellent!! Thanks for posting!!

[chadb]

Great job. Very helpful, easy to follow, you nailed it

[thomassteur]

After watching this video I struggled for 5 minutes to get a reading on my multimeter. Turns out I forgot to flip the standby switch. Suffice to say your instructions were extremely helpful (more so if I'd followed them on time!)

[southernsantapiper]

You made it look easy..ill have to try myself next time i need to replace tubes.

[stevehart]

Why not clean the tube sockets while the tubes are all out? Why not test the amp brfore putting the back cover on?

[Jah_Rastafari_ORIG]

Next time, slightly loosen the screws on the sides of the cabinet; they compress the wood of the back cover. That way you don't risk breaking the back cover at the thin bits next to the cutouts...

[issamkhatib]

Hello, I have tested and I am getting a 5mv to 15mv max when changing the variable bias resistor. Any advise there?
The plate voltages are around 390V on both tube 6L6's.
My main issue with this Blues Deluxe Reissue is hum and break up noise on certain notes. 1st work I will do is change the Filter Caps.
Any help would be appreciated!
Thanks for the clear video. Thumbs up!

[Claytone-Records]

Wow that was surely noisy. I have a Blues Deluxe from ‘93 and it gets regular use and it’s never been that noisy. It just doesn’t sound so good tone wise after awhile so I need to replace the tubes every 2 years or so. Matched tube pairs for certain and look around for decent stock. Some of this stuff looks a bit different in the back of the reissue but mostly the same. Do you have any experience with the 90’s models? This was an informative video, thanks.

[avispasentuass]

Bias at 72mv sound best and keep the output transformer runing colder, with better heat disipation for my experience

[jpemberton]

This is a great video.

Crystal clear instructions and direction.

Quick question,
I still didn't feel comfortable using the test point so I decided to use a socket probe on one of the power tubes and adjusted to a reading of 30mA.

Not sure if this is the same idea but the amp seems and sounds OK.

[georgescannelli]

Great demo. What is the name of that tool you used?

[Unerouedevantlautre]

Merci pour cette vidéo ! Cela ne semble pas si compliqué finalement. Un grand merci.
J’ai cependant une question : comment savez-vous que chaque tube a besoin de 30mV ? Où avez vous eu cette information ??? Tous les tubes 6L6 ont besoin de 30mV ou il faut mesurer ça quelque part ?? Pouvez-vous l’expliquer s’il vous plaît. Merci. 🙏

[davidmartinez]

i'm curious did what did the amp sound like after the tube change? Did it fix the noise issue?

[humangreg]

Thanks very instructive ! How often do you change the tubes ?

[geordieboy]

Thanks for this - from what you saw when changing the tubes, in terms of access do you think it is possible to change the speaker by only removing the back cover? Advice would be much appreciated.

[thediminish]

Great video ! Thank you. Can I ask you some questions? I have matsushita 17ew8 tubes. Can I use 17ew8 to guitar amps or guitar effector?

[michaelsterling]

Just curious, dielectric grease, not recommended?

[JorgeCastro-jusy]

El bias está muy alto, y no uso las operaciones matemáticas para que el tubo quede exacto, ahí quedó frío.

[msblues]

Tapping the tubes is ok but when the amplifier has a great signal from the guitar it is hrrr. no matter with or without preamp