Fender '65 Twin RI | 'Weird Bad Sounds'

[MarkEagleton]

I appreciate you taking the time to set up the tube probing shot. Not technically necessary, but way more interesting to watch than sticking with the wide shot. I would personally like more of this detail.

[sgt.grinch]

Another day of learning. I love it. Sounds great.

[edwardhannigan]

Great video Lyle, always something new to learn...Love the easy initial detection methods you show us all...Thanks for sharing ..Ed..uk..😀

[jameshenz]

Wow! The exact thing happened to me the other night. I was tube rolling. Put Sovtec in. Tapped on it. Bam! Loud crackling sound. Couldn't get to switch fast enough. Took out screen and fuse. Love your videos. Blessings.

[SirLoinMagroin]

Short bottle tubes for combo's. Great tip. Now back to my longneck Coors bottles.

[ferdberfle]

The amp sounds great Lyle! Another great job.

[Walks-With-Pride]

I had a similar problem with my '65 Twin Reverb Reissue. It started making loud noises, so I had a new matched quad set of power tubes put in. One of the preamp tubes was microphonic so I replaced all the preamp tubes as well. Since then everything has been fine.

[williambock]

That does sound good! I’m always pleasantly surprised by how good a properly working Blackpanel fender sounds. They really do have a silkiness to them that gets me.

[richardweza]

For a fender player it seems the 65 RI would be a good choice once the caps are updated.

[oldguy]

Good job, ya know it would make a compelling video to see a tube have a catastrophic failure. That’s something you don’t see often. Anyway enjoy your evening.

[russellhltn]

Customer: It makes noise when I do this.
Tech: Then don't do that!
;)

[paulp]

Hi Lyle, sorry for the beginners question but just wanted to ask why you had to disconnect the output transformer before you checked the resistors ?
Thanks

[roycox]

Question for you sir! First, thanks for the great videos! I have a fender 65 twin reverb reissue and it always sounded perfect. Lately it seems like I have lost half of the headroom and volume it used to have. It’s now breaking up way too early. Also when I use a bias probe I only get a reading on one of the 4 output tubes. They all 4 light up when the amps on but I’m not getting a reading on three of them. I’ve tried different tubes and that didn’t work so something must have happened internally. I have the chassis pulled and I’m experienced working around amps safety wise but what should I check first when it comes to trouble shooting in your opinion? One more thing. I know you said that the screen resistors on the output tubes should come in around 470ohm. I just measured all 4 screen resistors and on the tube that gets a bias reading it reads 470 ohms, the other three tubes screen resistors read
Tube 1 - no reading
Tube 2 - no reading
Tube 3 - 470 ohms
Tube 4 - 7.57

[davidfuller]

I had one of these come in a while ago where the power amp had just catastrophically failed. The crappy molded cable broke and the amp no-loaded. Those cables are a freakin' death trap.

[krauz]

Would be very useful if you could show us how 53% bias shounds against the eurotubes recommended 70%. And why you choose that value?

[robimiara]

Love the channel!!
These days that tubes are very expensive, can't you just change a pair, not a quad?
I guess it might was an opertunity to put fresh quad, and maybe the owner had no problem to pay for quad, but I think that matching is abit overated. If it sounds good and the bias is close, why not?

[weschilton]

Looks like you can't judge a cap by whether its leaking or not.