Hello, This is my first time posting here.
I was hoping to get some help choosing capacitors for this amplifier.
I will try to include some pictures of the old capacitors that I have already removed from the circuit board.
I have removed all of the aluminum can type radial electolytic capacitors.
There are 20 capacitors in total, and here’s what I know about each group of capacitors:
4-large snap-in caps- Nichicon LQ (M) CE 85’c 2700uf 100wv 35mmX30mm
6-medium caps- Surge 0114T (M) 105’c 330uf 63v 13mmX24mm-5mm spc.
10-small caps- Nichicon B0145 VR (M) 85’c 100uf 25v 5mmX11mm-2mm spc.
Through searching the Internet I have been able to determine that these caps are obsolete.
I think that my old 2700uf caps are referred to as the now obsolete LQ series. But...as best I can tell there is a cap on a vendors site with part# - LLS2A272MELC that I think fits the specs of my old caps very good. LS series.
I will get those and that takes care of my 4 large capacitors.
Next are these Surge 330uf caps. I have so far discovered that it is impossible for me to find any further specifications on these beyond what is printed on the outside of the capacitor jacket itself. I have even phoned and talked to someone at Surge components to try to find out more about these. This number 0114T that I gave her is apparently not their part#? She even tried to deny that this was a Surge capacitor, which I thought was strange. I sent her an email and pictures of this cap and the amplifier sticker/info. and she was supposed to get back to me but she has not as of a week later.
These 330uf caps are what I need help replacing.
I would like to stay as close or better than the old caps for replacements. I tried to find the Nichicon audio specific caps but the place I’m getting them from only have those in 85’c temps., as well as trying to match up the rest of the unknown specs is futile since I have no idea what the old Surge capacitors specifications are?
I seen some Panasonic FR series that looked close to the same size and 105’c but again I am stumped on the replacement specs.
I also saw FC Panasonic caps but these Panasonic caps are NOT audio grade caps? Do I need to worry about that? It looks as if people like these caps?
This is a mono amplifier and will obviously be used to power subwoofers if that makes a difference?
I have not found much about these smallest caps.
There is 10 of them and they are spread out around the circuit board by themselves. These are 100uf 25v.
I was hoping to get some help choosing capacitors for this amplifier.
I will try to include some pictures of the old capacitors that I have already removed from the circuit board.
I have removed all of the aluminum can type radial electolytic capacitors.
There are 20 capacitors in total, and here’s what I know about each group of capacitors:
4-large snap-in caps- Nichicon LQ (M) CE 85’c 2700uf 100wv 35mmX30mm
6-medium caps- Surge 0114T (M) 105’c 330uf 63v 13mmX24mm-5mm spc.
10-small caps- Nichicon B0145 VR (M) 85’c 100uf 25v 5mmX11mm-2mm spc.
Through searching the Internet I have been able to determine that these caps are obsolete.
I think that my old 2700uf caps are referred to as the now obsolete LQ series. But...as best I can tell there is a cap on a vendors site with part# - LLS2A272MELC that I think fits the specs of my old caps very good. LS series.
I will get those and that takes care of my 4 large capacitors.
Next are these Surge 330uf caps. I have so far discovered that it is impossible for me to find any further specifications on these beyond what is printed on the outside of the capacitor jacket itself. I have even phoned and talked to someone at Surge components to try to find out more about these. This number 0114T that I gave her is apparently not their part#? She even tried to deny that this was a Surge capacitor, which I thought was strange. I sent her an email and pictures of this cap and the amplifier sticker/info. and she was supposed to get back to me but she has not as of a week later.
These 330uf caps are what I need help replacing.
I would like to stay as close or better than the old caps for replacements. I tried to find the Nichicon audio specific caps but the place I’m getting them from only have those in 85’c temps., as well as trying to match up the rest of the unknown specs is futile since I have no idea what the old Surge capacitors specifications are?
I seen some Panasonic FR series that looked close to the same size and 105’c but again I am stumped on the replacement specs.
I also saw FC Panasonic caps but these Panasonic caps are NOT audio grade caps? Do I need to worry about that? It looks as if people like these caps?
This is a mono amplifier and will obviously be used to power subwoofers if that makes a difference?
I have not found much about these smallest caps.
There is 10 of them and they are spread out around the circuit board by themselves. These are 100uf 25v.
Pictures1
Pictures of the amplifier and the Large 2700uf 100v capacitors.
Pictures of the amplifier and the Large 2700uf 100v capacitors.
Attachments
Pictures2
Here is the mystery capacitor. This is the cap I need the most help replacing and trying to find out what the specifications are? (Black and Gold)(pic#1 and #2)
-6 pcs of Surge 0114T (M) 105’c 330uf 63 v
- (is this “0114T”a Rockford Fosgate company reference number that they put on the capacitor at time of manufacture?)
-13mm diameter. 24 or 25mm length and 5mm lead spacing. 2 leads
-There are 6 of these medium sized caps in a group (2x3) on the circuit board.
—-There was some type of white silicone glue down the middle of the group of 6. —-(What is this stuff and what would I replace it with?)
As well are pics (#’s3,4,5,6.) of the smallest capacitors. (Black and White)
-There are 10 of these in various/single locations all around the circuit board.
-I am not sure if that first character in the part number is a capital “B”or an “8”? B0145? or 80145? (I’m wondering if this is put on by Rockford Fosgate as a their own company reference number?)
-(These are small and so the letters/numbers are very hard to read?)
—10 pcs of Nichicon B0145 VR (M) 85’c 100uf 25v
-these little babies are 5mm in diameter and either 10 or 11 mm in length? They have two leads spaced about 2 or 3 mm apart.
—The vendor I will be ordering from has Elna Silmic 11 in this size (100uf 25v) however, I need to try to find out the specs on these old ones as well to make certain the replacements are a match to the old specifications. I would like to use the Elna as they seem to be well received from what I have been reading on various places on the Internet.
Picture#7 is of all three sizes/groups of capacitors in question for relative size reference to each other.
Here is the mystery capacitor. This is the cap I need the most help replacing and trying to find out what the specifications are? (Black and Gold)(pic#1 and #2)
-6 pcs of Surge 0114T (M) 105’c 330uf 63 v
- (is this “0114T”a Rockford Fosgate company reference number that they put on the capacitor at time of manufacture?)
-13mm diameter. 24 or 25mm length and 5mm lead spacing. 2 leads
-There are 6 of these medium sized caps in a group (2x3) on the circuit board.
—-There was some type of white silicone glue down the middle of the group of 6. —-(What is this stuff and what would I replace it with?)
As well are pics (#’s3,4,5,6.) of the smallest capacitors. (Black and White)
-There are 10 of these in various/single locations all around the circuit board.
-I am not sure if that first character in the part number is a capital “B”or an “8”? B0145? or 80145? (I’m wondering if this is put on by Rockford Fosgate as a their own company reference number?)
-(These are small and so the letters/numbers are very hard to read?)
—10 pcs of Nichicon B0145 VR (M) 85’c 100uf 25v
-these little babies are 5mm in diameter and either 10 or 11 mm in length? They have two leads spaced about 2 or 3 mm apart.
—The vendor I will be ordering from has Elna Silmic 11 in this size (100uf 25v) however, I need to try to find out the specs on these old ones as well to make certain the replacements are a match to the old specifications. I would like to use the Elna as they seem to be well received from what I have been reading on various places on the Internet.
Picture#7 is of all three sizes/groups of capacitors in question for relative size reference to each other.
Attachments
Sorry, I guess I should have led off with that information.
I picked this up for very cheap from the previous owner. He had listed it for parts as it was not working.
- His description was that it was squealing. And, it doesn’t work. That’s all I got from him.
I brought it home and envisioned that because it was old it probably needed new capacitors.
I took the cover off and was surprised to see that the circuit board was in beautiful shape on the topside....aside from a very small amount of corrosion at the junction of where the black wire (10 guage red and black) soldered on to the board.( HV+ J103) I also noticed that the thermal paste was thin and hard.
I decided to take the circuit board completely out to scrape off the old thermal paste, put new stuff on and reflow the solder joint where there was corrosion at the black wire.
When I flipped the board over , everything looked nice except for one small solder joint. I believe it is labelled F83. I reflowed that joint as well. I put it all back together and took it out to my car and hooked it up....
I got a faint squealing noise but no sound. The lights lit up. I messed around with the settings on my headunit and decided to plug the bass knob from my
Mb quart amp that was in the car to see if that would help? I’m not sure that was a good idea, because a few seconds after messing with the bass knob I heard a loud “pop”.
I turned the car off and went to the back to check it out and saw a very small whiff of smoke coming out of the 1 corner.
I brought the amp back in and took it apart and I couldn’t see any evidence of components being burnt or melting so I just thought that the caps must have caused the smoke?
I am very new to attempting anything like this and to be honest; you are not the first person to tell me they have never had to change the caps on one of these.... so I am really beginning to regret doing so.
Unfortunately I have already taken them out, so it’s kinda too late to turn back.
I will also add that both my 330uf and smallest 100uf came out without the leads on a couple and there was no liquid that leaked out, so I assumed they are dried out.
I honestly don’t know if the caps are the problem with this amp but I do need to get new ones now.
I did read that the mosfet are a common problem with these before taking the caps out but the local electronics repair shop said that they usually blow up or melt and he said they looked fine, because I brought the bare circuit board to him.
He said I was on my own because he doesn’t work on Rockford Fosgate and also that he can’t get new mosfet boards for this amp because they are too old?
I don’t understand that because I’ve seen videos of people changing them but didn’t worry because he led me to believe that my mosfet were fine because they were not melted?
The local electronics supply store will only sell me capacitors in batches of 500 pieces at $3 each which is retarded.... so I am going to order them online.
Ok, based upon what you guys have said I should not have gone in here haphazardly pulling out what very likely are perfectly good 2700uf caps. Admittedly I don’t have a clue what I am doing. These large caps actually appear to look like they are sealed up and in good condition for all I know? The smaller two sizes I’m not so sure about? Is there any way I can test the 2700uf caps with a multi tester to determine if they are good? Thank you for the advice.
Panasonic EEU-FC1J331B
I have narrowed it down to a couple of choices provided I am reading and interpreting specs correctly.
Here is one of my choices for 330uf caps:
Panasonic
EEU-FC1J331B.
I have narrowed it down to a couple of choices provided I am reading and interpreting specs correctly.
Here is one of my choices for 330uf caps:
Panasonic
EEU-FC1J331B.
Attachments
Panasonic EEU-FR1J331B
Here is my second option: Panasonic EEU-FR1J331B
Here are the specifications on these; I believe they would be referred to as FR series? These look to have a lower ESR if I am reading the specifications correct?
I am leaning towards this second option, but I’m open to opinions from the experts?
The data sheet states these are Low ESR (same as FM series)
It also says made in Malaysia?
Here is my second option: Panasonic EEU-FR1J331B
Here are the specifications on these; I believe they would be referred to as FR series? These look to have a lower ESR if I am reading the specifications correct?
I am leaning towards this second option, but I’m open to opinions from the experts?
The data sheet states these are Low ESR (same as FM series)
It also says made in Malaysia?
Attachments
Last edited:
I am under the impression that the 330uf 63v Capacitors are my primary filter capacitors? There are 6 of them grouped together on the circuit board. The two Panasonic options I listed are nearly the same size as the ones I took out (surge)? Which of those caps would you use Perry? The FC’s or the FR’s?
The smallest capacitors that I need are the 100uf 25v. There are 10 of these little ones throughout the circuit board and not grouped together; they are singles but all are the same size. I listed those Elna RFS-25V101MH4#5 as the ones I was going to use.
I’m sorry if this is confusing. I’m not sure what the purpose or name of these little ones are? Are they primary filter caps as well?
The smallest capacitors that I need are the 100uf 25v. There are 10 of these little ones throughout the circuit board and not grouped together; they are singles but all are the same size. I listed those Elna RFS-25V101MH4#5 as the ones I was going to use.
I’m sorry if this is confusing. I’m not sure what the purpose or name of these little ones are? Are they primary filter caps as well?
Sorry these Elna RFS-25V101MH4#5 will not work!!!!!
Perry, I see what you are saying now! Thanks for the heads up!
I’m glad I didn’t go ahead and order yet!
These Elna RFS-25V101MH4#5 will NOT work !!! The lead spacing is 5mm and the diameter is double the size of the Nichicon’s I took out! I need 2mm lead spacing not 5mm! Also the diameter on the Elna is probably too big to fit in some of the spaces on the board. Weird that the values are the same but there is such a big difference in size. I’ll pay closer attention.
I guess I won’t be using Elna audio grade caps in this.
Back to the drawing board for replacements for my 10 pcs. 100uf 25v .
Perry, I see what you are saying now! Thanks for the heads up!
I’m glad I didn’t go ahead and order yet!
These Elna RFS-25V101MH4#5 will NOT work !!! The lead spacing is 5mm and the diameter is double the size of the Nichicon’s I took out! I need 2mm lead spacing not 5mm! Also the diameter on the Elna is probably too big to fit in some of the spaces on the board. Weird that the values are the same but there is such a big difference in size. I’ll pay closer attention.
I guess I won’t be using Elna audio grade caps in this.
Back to the drawing board for replacements for my 10 pcs. 100uf 25v .
I’m getting the impression that this amp did not use any audio grade capacitors when it was built. I have not been able to find the 4 large 2700uf caps in an audio grade.
I have not been able to find the 6 medium sized 330uf caps in an audio grade.
And as for these 10 little ones 100uf 25v... I will see what is offered more closer to the correct dimensions this time.
I have not been able to find the 6 medium sized 330uf caps in an audio grade.
And as for these 10 little ones 100uf 25v... I will see what is offered more closer to the correct dimensions this time.
Ok, the Fr’s Is what I will get, for the Primary filter caps. Thanks.
I’m just reading through the 100uf 25v capacitors specs now.
It looks like there are over 150 different types to read through. It doesn’t sound like it matters much which ones I use here? It looks like Nichicon still makes VR series in this 100uf 25v but the physical dimensions are 6.3mm diameter as opposed to the 5mm diameter that are being replaced?
I’m just reading through the 100uf 25v capacitors specs now.
It looks like there are over 150 different types to read through. It doesn’t sound like it matters much which ones I use here? It looks like Nichicon still makes VR series in this 100uf 25v but the physical dimensions are 6.3mm diameter as opposed to the 5mm diameter that are being replaced?
what i´ve measured these old fosgates is those 10uf 16v SMD caps, all were around 8ohms, new is 0,9ohm.
All larger can type caps has been in specs
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