Search found 2991 matches
- Wed May 15, 2024 1:17 am
- Forum: Technical Discussion
- Topic: Illinois brand capacitors still bad?
- Replies: 19
- Views: 846
Re: Illinois brand capacitors still bad?
Thanks for this test out and post, and yes that’s over a 10% different which is a lot! My math says over 1000% in ESR. A current data sheet from Mouser indicates IC is part of CDE, and the max ESR for 10uF 160V axial at 120 Hz is 33.157 ohms. IMG_0204.jpeg IMG_0205.jpeg IMG_0206.jpeg IMG_0207.jpeg ...
- Wed May 15, 2024 12:47 am
- Forum: Technical Discussion
- Topic: Illinois brand capacitors still bad?
- Replies: 19
- Views: 846
- Tue May 14, 2024 4:09 am
- Forum: Technical Discussion
- Topic: Yet Another Two Stroke build
- Replies: 14
- Views: 729
Re: Yet Another Two Stroke build
Kit arrived today from Weber. Now the fun begins..... First step is shellacking the cabinet. IMG_3954.jpeg A word from someone who has screwed up this procedure. There are two ways to go. One is spraying the cab with nitrous lacquer and letting it go dark of its own accord. The second one is to use...
- Tue May 14, 2024 4:06 am
- Forum: Technical Discussion
- Topic: Illinois brand capacitors still bad?
- Replies: 19
- Views: 846
Re: Illinois brand capacitors still bad?
I got some Vishay 10uF 160v caps and the ESR figure is vastly different.
Now for the good news.
Of course you can draw your own conclusions from these pictures, but I think I have made my mind up on the matter.
Now for the good news.
Of course you can draw your own conclusions from these pictures, but I think I have made my mind up on the matter.
- Sun May 05, 2024 1:38 pm
- Forum: Fender Discussion
- Topic: Conductive boards again.
- Replies: 14
- Views: 610
Re: Conductive boards again.
You have a nice collection of carbon comp resistors there and though it looks like the boards are the real problem here was an interesting commentary on reconditioning the carbon resistors from Hi Fi Collective: Being made of organic material, they do have the tendency to absorb water from the atmo...
- Sun May 05, 2024 1:32 pm
- Forum: Fender Discussion
- Topic: Conductive boards again.
- Replies: 14
- Views: 610
Re: Conductive boards again.
Perhaps you have seen what Psionic (Lyle) goes through with this issue. An alcohol lavage and meticulous removal of the residue that builds up on the wax boards can be quite effective. Then there is the under board that gets polluted. I have pulled that board out on my silver face champ and done th...
- Sun May 05, 2024 1:26 pm
- Forum: Fender Discussion
- Topic: Conductive boards again.
- Replies: 14
- Views: 610
Re: Conductive boards again.
Mark, with 20-30VDC on the board, I can tell you that there is no saving this board. Its something i have tried several times....take board out, take all parts off, remove paraffin with heat gun/paper towels, acetone/brake cleaner clean off the residual mess, rebuild.... Then the same thing happene...
- Fri May 03, 2024 4:26 pm
- Forum: Fender Discussion
- Topic: Conductive boards again.
- Replies: 14
- Views: 610
Re: Conductive boards again.
I admit I am curious... Are you even going to try to resurrect this beast? How do you even begin to evaluate whether an amp like this is worth saving? And to what lengths you might go to preserve the legacy value of the original? Yes, I want to save the amp, I don’t know what it will take to get it...
- Fri May 03, 2024 4:22 pm
- Forum: Fender Discussion
- Topic: Conductive boards again.
- Replies: 14
- Views: 610
Re: Conductive boards again.
I never seen a Fender with these lugs before either but it is what it is. The lugs are original as the resistor attached to the lugs is the very same type as is used on the other side of the P.I. grid. There are no signs of the resistor being removed and resoldered. The solder joints are untouched a...
- Fri May 03, 2024 3:19 am
- Forum: Fender Discussion
- Topic: Conductive boards again.
- Replies: 14
- Views: 610
Re: Conductive boards again.
Purely for interest sake here is a picture of tagstrip being used to eliminate problems with a conductive board at the Fender factory.
They knew about the problem in the silver face amp days.
They knew about the problem in the silver face amp days.
- Fri May 03, 2024 2:35 am
- Forum: Fender Discussion
- Topic: Conductive boards again.
- Replies: 14
- Views: 610
Conductive boards again.
I have a silver face Twin on the bench and I have never seen a board like it. The board is stuffed.
When I got the amp the power transformer was stuffed, I noticed that the tone control caps are soldered on one side
When I got the amp the power transformer was stuffed, I noticed that the tone control caps are soldered on one side
- Sun Apr 28, 2024 6:13 am
- Forum: Technical Discussion
- Topic: Illinois brand capacitors still bad?
- Replies: 19
- Views: 846
Re: Illinois brand capacitors still bad?
Oddly enough I had a friend get a Fender Blues Junior come in. It was built in 2019 and is a Mark 2 amp which uses cathode bias. The filter caps were the blues IC and they looked fine, no signs of spilling their guts.
- Thu Apr 25, 2024 2:31 pm
- Forum: Trainwreck Discussion
- Topic: Why did it take me 15 years to try a 12ay7 in my Liverpool?
- Replies: 8
- Views: 1489
Re: Why did it take me 15 years to try a 12ay7 in my Liverpool?
In the diagram the switch is set to fast ( higher gain) mode.
https://ampgarage.com/forum/files/Expre ... iation.jpg
https://ampgarage.com/forum/files/Expre ... iation.jpg
- Sun Apr 21, 2024 3:26 am
- Forum: Technical Discussion
- Topic: Illinois brand capacitors still bad?
- Replies: 19
- Views: 846
Re: Illinois brand capacitors still bad?
What makes you think the problem is exclusive to the Hot Rod series Fender amps? Something I recall reading about some time ago. May be just internet lore, but maybe Fender did end up with the bulk of the bad product from that era. Yeah, it’s hard know if they are still bad. I would rather have mor...
- Sat Apr 20, 2024 1:39 pm
- Forum: Trainwreck Discussion
- Topic: Help me Rocket Men
- Replies: 7
- Views: 696
Re: Help me Rocket Men
The output transformer is quite an old version. It has a 5.5K primary from memory and it is quite loud. I remember RJ’s was quite full on. I thought it was in the vein of Richie Hall’s amp. https://youtu.be/HHiJrufUbF0?feature=shared https://ampgarage.com/forum/viewtopic.php?t=30033 https://cdn.shop...