What is the PF of this Domino cap

[dumbassbob]

There are(where) 2 domino caps in my amp the top 3 left to right read Brown, black,Brown, and the bottom 3 left to right Black, Green,White I really need to know before I send the amp back on Monday Do these caps go bad or just more shoot gun amp repair..All the high end is Gone and it sounds like it hits a steel wall on the G,B,E strings

[Enzo]

Always helpful to tell us what the amp model is, and also post a schematic if you have one. Or perhaps where in the circuit these parts are?

Can you see for sure the direction arrow on the part to make sure it is not upside down?

My initial raction is 100pf, but there were several code systems back then.

[dumbassbob]

Always helpful to tell us what the amp model is, and also post a schematic if you have one. Or perhaps where in the circuit these parts are?

Can you see for sure the direction arrow on the part to make sure it is not upside down?

My initial raction is 100pf, but there were several code systems back then.

MyAA 64 Bandmaster I think they went in front of the .047 caps and they where stock..Kendricks amp said my amp was a trasition amp and they added a few "things"

[dumbassbob]

Always helpful to tell us what the amp model is, and also post a schematic if you have one. Or perhaps where in the circuit these parts are?

Can you see for sure the direction arrow on the part to make sure it is not upside down?

My initial raction is 100pf, but there were several code systems back then.

MyAA 64 Bandmaster I think they went in front of the .047 caps and they where stock..Kendricks amp said my amp was a transition amp and they added a few "things"

[dumbassbob]

Always helpful to tell us what the amp model is, and also post a schematic if you have one. Or perhaps where in the circuit these parts are?

Can you see for sure the direction arrow on the part to make sure it is not upside down?

My initial raction is 100pf, but there were several code systems back then.

The Arrow on the bottom points to the Left

[Tom Phillips]

Bob,
It would be helpful to keep all the discussion about this Bandmaster in one thread.

Anyway...even with the GW statement that you have a transition amp I have never run across any 1964 Fender amp that still used domino style caps. There is so much weird stuff going on with this amp that it would really be helpful if you posted detail photos.

By "send back" do you mean that you are going to let the same guy have another go at it?

[dumbassbob]

Bob,
It would be helpful to keep all the discussion about this Bandmaster in one thread.

Anyway...even with the GW statement that you have a transition amp I have never run across any 1964 Fender amp that still used domino style caps. There is so much weird stuff going on with this amp that it would really be helpful if you posted detail photos.

By "send back" do you mean that you are going to let the same guy have another go at it?

He's got over $1,000.00 of my $$$$$ And you know he an't gonna give it back,I got to wait for monday I am not paying another $60 to ship it, I think he has a Fedx account.I am sitting here looking at all these caps in a plastic bag. I only posted over here about the dommino caps, why he pulled them You should hear the high GBE strings hard slamming thounk sound

[J M Fahey]

DUMBASSBOB: you have already been cheated out of over U$1200 on that amp and you *still* want to send it to be butchered even more?
You have been told a bunch of lies , *this* is what has been told about the "transition of '64":

Horseshit. In '64, the only transition was from the AA763 to AB763 circuit, and the only change o
n the Bandmaster was in that crappy stacked capacitor deal in the first position of the PS filter. It went from stacked 60uF to stacked 70uF plus the 220k resistors. The next "transition" came in 1968, and only involved changing one resistor value in the PI stage. This is as basic a blackface circuit as you'll find.

Worst thing is that the amp sounds worse and worse every day.
What are you trying to do?

*BEST* bet is to restore it to original spec and leave it at it.

Obviously, by any serious Tech except the one you are using now.

[Steve Conner]

I bet those capacitors were there to stop parasitic oscillations, and removing them has made the amp burst into oscillation intermittently on loud notes. "Hard thunking distortion" sounds kind of like what I'd expect in that case.

I think you should cut your losses and hurl the amp off the top of a tall building, with your amp tech attached to it.

[Tom Phillips]

Bob,
I'd still like to see detailed photos of the amp if you can work it out.
Tom

[dumbassbob]

I bet those capacitors were there to stop parasitic oscillations, and removing them has made the amp burst into oscillation intermittently on loud notes. "Hard thunking distortion" sounds kind of like what I'd expect in that case.

I think you should cut your losses and hurl the amp off the top of a tall building, with your amp tech attached to it.

I don't think so I have a picture of Jimi Hendrix using it on stage at the Hollywood Bowl.I did have the rental sheet and all the managements that rented it as back line,I bought the amp from Hollywood Parks and Recreation in 1971 when they remodeled the H.bowl... The amp has alot of history.It was stolen from me for 12 yrs from a former bandmember and a pawn shop back East saw my name and moms phone # inside, called me I got it back. Until this last time ,it always sounded fantastic for a week then it would sound bad..I could hear it after 5-10 min.I will give him one more shot I want the blue CD caps put back in..I will ask for $300. back if he can't do me right.But all this shotgun stuff needs to stop

[dumbassbob]

DUMBASSBOB: you have already been cheated out of over U$1200 on that amp and you *still* want to send it to be butchered even more?
You have been told a bunch of lies , *this* is what has been told about the "transition of '64":

Worst thing is that the amp sounds worse and worse every day.
What are you trying to do?

*BEST* bet is to restore it to original spec and leave it at it.

Obviously, by any serious Tech except the one you are using now.

I thought Gerald Weber was one of the best He always gets high marks on his amps and reverbs in Guitar Player has the amp class's ect

[DrGonz78]

My #1 question why not ask someone on this forum to fix this amp? From the start any number of techs on this site would have tamed this beast just right. I am so happy to send something off to any number of people I read posts on this forum and trust them since they are so candid... Hey they probably would not rip you off either... Well that is my #1 question after following this thread through many portals of hell.

[J M Fahey]

Dear dumbassbob.
I am not dissing GW by a long way, to each his own and he must have some very good credentials, but it looks like specifically on your amp, things are not going smoothly.
I've been checking around (in fact, I *do* have a silverface Bandmaster, not very different from yours, and I love it) and your own is as classic blackface as they come.
You need nothing strange or weird done to it, just check it from input to output jack and everything in between, and leave it original, including wiring and layout.
You do not need the original "brand" parts at all.
Quite the contrary.
Just where it specifies, say, a .047uFx600V cap , use a good modern .047uFx600V one, bought at Mouser or some other serious provider and that's it.
Same with all and every other parts.
There's no magic involved.
There's an important point, often overlooked: *Leo Fender would have used 2012 good commercial parts if he were alive today* ... just as he used good commercial parts in 1969 or whenever yours was built.
He didn't specify "mojo" in his supply orders, just parts identified by their value.
You will end having a good, properly working Bandmaster, *just as if Leo had built it one week ago*.

[Enzo]

Arrow points to the right on the 6-dot caps.