How to fix 1964 Fender Princeton Low gain weak tube guitar amp Step by step
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- Опубліковано 22 лют 2020
- Another great repair. From low gain to monster sound. I approached this repair systematically, hopefully to catch the flaw along the way. Turns out that the issue was due to past maintenance. Either way, when working on these old amps, always install fresh capacitors. These have been in service almost 60 years. Failure is right around the corner. These old amplifiers have beat the odds. Still operating and will continue as long as they get periodic check ups. This Princeton is not original, however still sounds great!
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AHHHH! Seeing the Snozzeramus Ungar is like seeing an old friend. You Know that when it shows up, there's going to be some serious $#!% going down! Please keep up the excellent work, Terry!
Tony Kuzmano is a valuable tester! If it passes his test, it Rocks!
Nice video, very informative, but painful at the same time, seeing all those original parts being replaced only to find out they were perfectly fine and the problem was elsewhere (volume pot and input jack)!
Amp sounds fabulastic. Love it when an amp tech looks around and finds stuff and makes it like new, when it ain't!
Your guitar amplifier repairs are my absolute favorite! Great info!
excellent job Terry
I liked both tube choices. The bite of the original would suit live and the mellowness of the replacement practice. Both tubes, but switchable and twice as much output power... Guitar players are never satisfied... As it happens the channel switching on my Super 60 already does exactly that. And LOUD! Nice little amp. Thanks.
Snozzeramus is looking a little raggedy! Many, many repairs using that beauty. Great troubleshooting as usual!
A-Yo Tony K! Good to hear ya! Nice job Terry getting that amp ship-shape. It sounds sweet.
Tony definitely has a good choice in guitars . . . a Fender Telecaster ;-))
Great video as usual.
Hey, if you ever need to replace that SNOZARAMUS iron, have a look at the JBC soldering stations. They have the power to solder large ground plains.
Cheers
Another Great repair Terry !!
I can watch your videos all day...... then again I’m a nerd like that
2:25 that's how i blew up my 5$ multimeter! Glad i did and glad that i was doing something that makes sense with a decent meter
wow, that beast of a soldering gun ..
Amazing. I'm your fan from Brazil.
i love thats videos!! im gonna see all them!! i send you a hug from argentina!!
awesome video
Nice video.
I personally don't like those multiple cap cans. If one cap (usually the first one, which has to take the biggest ripple current peaks) of that multiple cap can fails, you have a problem. I prefer the dog house and normal axial capacitors which can be changed individually.
I would be quite suspicious about those old coupling caps as well, especially output tube coupling caps. If they failed, output tubes would be in danger.
Yes,coupling caps' can be a big problem,in these older Fenders'!
Nice job Terry.
Insane headroom
. Wow.
Incidentally, if you lack a suitable Snozzeramus you can solder to a steel chassis very well by clamping the threaded end of a 4-5" 1/4-20 or 5/16 bolt in a pair of vice grips and heating up the head in a propane torch. File the head semi-clean if it's a rusty dog. Stop heating before red heat. Use it just like you would a big fat soldering iron. You don't really have to tin the bolt-head. Works perfect.
Nice one Terry.
Great video!
Great to see & hear Tony again! What do you think the output watts were with the different wreckdum-fire tubes! 3 or 4 watts? I could tell some different tone differences between the 2 tubes, but could not tell the volume changes. It really does not matter. You did a great job, as always, on getting this little jewel back up in form! Thanks for another guitar amp project Terry! And thank you Tony for tickling the strings on the beautiful Tele! Thanxz
Princeton with a Tele is a divine combination. Don’t ask me how I know!
I think it's time for a new Snozzeramus!
Hey Terry, The Old AU7700 sounds awesome! I should probably have had you recap it all, maybe in a few years. Hope you enjoyed the wine 🍷! Sorry I couldn’t find any TJ Swahn 😆🤮⚡️
Hello!
Wondering how one would get ahold of D-Lab for potential amp work?
How much extra power is it putting out?? Has it been modded to run like a deluxe with 22 watts?? It could be a weber transformer used as a replacement. Weber in their clones use power trans that run both princetons or deluxes. I could be mistaken,,,, I often am!! And I've heard that you can drop in deluxe power and output tranny's in a prince ton with out any drama.
OK Terry I gotta ask. When are we gonna see you HOT ROD one of these? Give it the old Lee Jackson/Howard Dumble/Mike Soldano/Randall Smith type treatment.
Hi Ter,, Wondering why Tony would say that he wouldn't need to install a Master volume control in this amp?
There is not enough preamp gain to justify a Master
I wonder how my Ukulele would sound on it.
Good Morning. Here in Brazil, in the 60s, the company Giannini launched some tube ampules inspired by Fender's projects. I have the Thunder Sound Bass model that was based on Bassman and I have Valiant, based on Pinceton. Could you give me an email address so I can send you some pictures? Regarding the Valiant model, it has 6v6 on the output and the card is 436VDC, -31VDC bias. I would like to be able to exchange information with Mr. Thank you.
...don't you mean "amplifier" instead of "ampule"(?)
Anyone else getting some distortion in the left channel on the guitar parts?
Could be my Boom mic, only used it while shooting the guitar demo
I called Mouser and Digikey asked for a Snozzeramus and they acted like I was crazy. Whats up with that?
A compressor would also light up that amp.
70s circuit mxr dynacomp clone will do the trick
Is that your drinking buddy LOL
Love it with an F... lol
Why am I hearing..hum?..
It's not in its shielded box.
If my solid-state Made in Mexico Fender Princeton 65 doesn't sell on Reverb, I'm going to send it to you sometime in the future, and get you to rip it apart, and rebuild on that chassis, and make me a RatRod Deluxe 1x12 with some 6L6 power tubes and 12AX7 preamp tubes, like a little mini Mesa Boogie Dual Rectifier...If that is something you can do? If so, is there any way you can shoot me a rough estimate of how much the parts and labor would be (email is on my About page here on YT)? You can video the build. That would be a cool series. 👍🏻
You're probably best emailing Terry with your enquiry. I'm sure he would do that for you no problem. His email also on his YT page.
Would you tell him to quit doing audio test playing dudle dudle. Dudle dudledudledudleddudle. Dudle
Tell your musician friend to quit playing the Diddle Diddle Diddle Diddle Diddle song he sounds like s***
I liked both tube choices. The bite of the original would suit live and the mellowness of the replacement practice. Both tubes, but switchable and twice as much output power... Guitar players are never satisfied... As it happens the channel switching on my Super 60 already does exactly that. And LOUD! Nice little amp. Thanks.
Hello!