The suspense is killing me 😂 Could it be a blown ot? A failure in one of the pt's secondary? An internally busted tube socket?? Guess I'll just have to wait 😁
I started learning about repair and operation of tube amps when this amp was brand new. You work very much like the people who taught me. I enjoy this channel very much. You are actually working first, educating second and entertainment last. Please keep it up.
the 47 ohm tailresistor is used by Fender on all single Speaker models with the. long tail PI ,because of the 8 ohm OT secondary, 6L6 (Vibroverb) or 6V6 (Deluxe) . 100 ohm for 2 or 4 ohm Secondaries ( 4 or 2 Speakers)
I had a 68-69 bandmaster In my shop the last few days. Not sure if an exact yr. It was one that had both a grid bias and cathode bias 6l6 so that should be a 68 or 69. It was worked on by someone else and the last tech told the owner "don't worry about the buzzing, it will go away on its own" hahaha it was a mess. Every nut was loose on all the pots, wrong filter caps, under rated bias cap, leaking preamp cathode bypass caps, coupling caps leaking and loads of other issues. It's very important to know the history of a amp sometimes hahahahah
I am wondering why you prefer stainless steel fasteners over brass? Also. what iron do you use for chassis soldering? Thank you for another informative video.
Quick question. On NOS carbon resistors, that are not spot on, is it better to replace a failing resistor with one that measures higher than lower? The hundred you replaced was 3% over its lower tolerance and the replacement was 3% over its higher tolerance rating. Perhaps better to be high than low, pun intended. Thanks for all your vids and help, really enjoy the show.
Thanks! It depends on the resistor's role in the circuit. You wouldn't hear any real difference with that variation in a plate or grid leak. But 84% vs 107% in the bottom part of a voltage divider (as is the case in this NFB circuit) is audible.
Seems like everything made these days have some type of issue .. I wonder if you you actually recomend any Amps ?.One for bedroom practice and/or one for jam/small gigs . I sold my gear years ago and just started playing casually again with some friends, but not sure what to buy( atm I use my friends katana mk2). . I also have a jazzmaster on the way now btw ..and we play alternative rock from the 90' .
So if the cable were to pull out of the chassis the hot or neutral would break before the ground, so if the hot wire hit the chassis it would trigger a circuit breaker instead of making the chassis live.
Part 2 coming at noon CST today.
suspense and amps man! cool.
The suspense is killing me 😂 Could it be a blown ot? A failure in one of the pt's secondary? An internally busted tube socket?? Guess I'll just have to wait 😁
I started learning about repair and operation of tube amps when this amp was brand new. You work very much like the people who taught me. I enjoy this channel very much. You are actually working first, educating second and entertainment last. Please keep it up.
the 47 ohm tailresistor is used by Fender on all single Speaker models with the. long tail PI ,because of the 8 ohm OT secondary,
6L6 (Vibroverb) or 6V6 (Deluxe) . 100 ohm for 2 or 4 ohm Secondaries ( 4 or 2 Speakers)
Yeah, I forgot about the Vibroverb. I don't see a lot of them.
By the looks of things, I’d say it’s an early spring of 65 amp. I hope that output transformer still works. They weren’t known for holding up.
We love ya here in Memphis Lyle. Please be careful crossing the street, this MATA buses are big.
I had a 68-69 bandmaster In my shop the last few days. Not sure if an exact yr. It was one that had both a grid bias and cathode bias 6l6 so that should be a 68 or 69. It was worked on by someone else and the last tech told the owner "don't worry about the buzzing, it will go away on its own" hahaha it was a mess. Every nut was loose on all the pots, wrong filter caps, under rated bias cap, leaking preamp cathode bypass caps, coupling caps leaking and loads of other issues. It's very important to know the history of a amp sometimes hahahahah
A 19 minute teaser...If this electronic wizardry gig falls thru you could be a reality TV producer
I am wondering why you prefer stainless steel fasteners over brass? Also. what iron do you use for chassis soldering? Thank you for another informative video.
no rust, no weakening. brass is soft.
the Feedback Resistor is in parallel to ground to the 100 ohm, so it´s about 90 ohm when measured in circuit
I'm aware. It measured low out of circuit too. Not drastically, but low.
I hate it when a video ends in a cliffhanger, like something out of The Perils of Pauline!
A cliffhanger!!
Quick question. On NOS carbon resistors, that are not spot on, is it better to replace a failing resistor with one that measures higher than lower? The hundred you replaced was 3% over its lower tolerance and the replacement was 3% over its higher tolerance rating. Perhaps better to be high than low, pun intended. Thanks for all your vids and help, really enjoy the show.
Thanks!
It depends on the resistor's role in the circuit. You wouldn't hear any real difference with that variation in a plate or grid leak. But 84% vs 107% in the bottom part of a voltage divider (as is the case in this NFB circuit) is audible.
What a cliff hanger … stay tuned for another exciting episode.
Hello, the big solder gun, what brand and what wattage is it? thank you.........................
If the faceplate is original, I think it would be from early 1965 since it still reads Fender Electric Instrument Co.
Seems like everything made these days have some type of issue .. I wonder if you you actually recomend any Amps ?.One for bedroom practice and/or one for jam/small gigs . I sold my gear years ago and just started playing casually again with some friends, but not sure what to buy( atm I use my friends katana mk2). . I also have a jazzmaster on the way now btw ..and we play alternative rock from the 90' .
My bedroom amp is a Gibson Southern Jumbo.
For your criteria, the Katana is a fine choice. Flexible, loud for the size, light, inexpensive.
Cliffhanger!!
Trust but verify.
I don't think I've ever seen anyone use a ratchet wrench on potentiometers before.
any situations where you'd prefer to use KEPS, or do you almost always prefer Nyloc?
I prefer Nylock in conjunction with a split washer on the other side, but Keps have their place.
Why keep the ground wire longer than the hot & neutral?
So if the cable were to pull out of the chassis the hot or neutral would break before the ground, so if the hot wire hit the chassis it would trigger a circuit breaker instead of making the chassis live.
@@PsionicAudio Thank you, and thanks for this channel! I'm loving your videos!
@@PsionicAudio very good! Thanks for that
Don't tell anybody but I was born in Nashville. 😂