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#1 2010-09-18 23:30:57

dai766
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Fliptops Cap replacment question

My knowledge with electronics in this manner is limited so i apologize, but my question is i just recently bought a Cap replacemet from fliptops intended for the V4-V22 style amp head and i have run into a problem figuring out just how to integrate the new caps into where the old ones go. i have a picture here detailing what i'm trying to say.

http://i450.photobucket.com/albums/qq222/dai766/wat.jpg

The arrows are pointing at the points i'm confused about, how should i go about soldering this to the new cap pictured to the right? are the highlighted areas just a common grounding or connecting point?

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#2 2010-09-23 20:19:16

Liquids
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From: CT
Registered: 2010-08-01
Posts: 491

Re: Fliptops Cap replacment question

Sorry to Hijack this thread though maybe it will also give dai766's question some attention too...


Was just thinking about ordering filter caps. 

I'm looking at the fliptop kits, which seem ok, but I think I may just pay a few more bucks from buying exactly what I want a la carte.

Any reason not to use a 100/100 cap in series for the screen supply and stiffen it up? I've seen guys that say 20uF for a screen supply is too low for them, 40uF is their minimum.  Any faulty logic here, or reason why this is not advantageous?

One of the  fliptop V4 cap kits includes a 1PC 100/450V in addition to 3 cap cans (1- 3x40uF, 1-2x100uF 1-2x50uF).  What is the point of that cap?  I want to make sure I'm not missing anything.


Matthew

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#3 2010-09-24 01:39:02

ROBO
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Re: Fliptops Cap replacment question

I'm pretty sure that with the fliptops kits you use the 40/40/40 cap in place of the existing one.

Next you would tie the 50/50 can leads together to get 100uf.

You would then use that 50/50 can and one leg of the 100/100 can in series for the Main supply (make sure that the 100/100 can is the one which is grounded).

After that you would be left with the one remaining leg of the 100/100 can and a single 100uf cap.

Once these two are wired in series it come out to a 50uf screen supply.
So it looks like the Fliptops kit does beef up the screen supply a bit.

Last edited by ROBO (2010-09-24 01:42:29)


Less talk, More rock

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#4 2010-09-24 02:03:09

Liquids
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Re: Fliptops Cap replacment question

Hmm.  I guess I was thinking the 100/100 would be for the mains, and then the 50/50 could be put in series for 25uF (rather than 40/40=20uF) as the screen supply.  Interesting.


Matthew

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#5 2010-09-24 02:12:53

ROBO
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Re: Fliptops Cap replacment question

ya when you have those multi-cap cans each cap section shares a common ground so theres no way to put two sections of the same can in series, only parallel.

Last edited by ROBO (2010-09-24 02:14:07)


Less talk, More rock

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#6 2010-09-24 16:03:09

hangman
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Re: Fliptops Cap replacment question

beefing up the screen supply wouldn't be a huge deal.   I don't think it is under filtered by any means.   ideally the screens do not draw any current,  in the real world they do,  but it isn't a lot.

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#7 2010-09-24 16:08:22

hangman
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Re: Fliptops Cap replacment question

dai766 wrote:

My knowledge with electronics in this manner is limited so i apologize, but my question is i just recently bought a Cap replacemet from fliptops intended for the V4-V22 style amp head and i have run into a problem figuring out just how to integrate the new caps into where the old ones go. i have a picture here detailing what i'm trying to say.

http://i450.photobucket.com/albums/qq222/dai766/wat.jpg

The arrows are pointing at the points i'm confused about, how should i go about soldering this to the new cap pictured to the right? are the highlighted areas just a common grounding or connecting point?

the arrows are pointing to the negative terminals on those capacitors.  there are four on each cap,  and they are all the same.

so anything connected to those outer terminals (the negative terminal) connects to the single negative terminal on the new cap.

These caps are being run in series,  so the negative terminal of one cap connects to the positive terminal of the other.  be careful with your wiring and follow the fliptops directions,  if in doubt,  take a picture and post again.

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#8 2010-09-25 21:08:08

dai766
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Re: Fliptops Cap replacment question

well it turns out there is a guy at work who is old school everything in electronics and he echo's your words Hangman so i thank you, it appears there was a BIG burn out on the board some time before and some shotty wiring was put in place to mend it, that's what was throwing me off while i was peeking at the schematics.

Last edited by dai766 (2010-09-26 14:58:52)

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#9 2010-09-26 20:44:45

dai766
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Re: Fliptops Cap replacment question

ok now don't laugh, well actually go ahead if you want but this is what i ended up with when wiring the 50X50's like i said i got my guy at work to look it over for me before i fire it up but i figured i'd post it here so that either way it would be a picture example of how or more likely how NOT to wire the new caps in hmm

http://i450.photobucket.com/albums/qq222/dai766/102_3871.jpg

the red and orange wires are from the transformer
all the wires connecting onto the negative terminal of the left most can are from the board, the one black wire is the lead from the other 20uf 800v can from the fliptops kit. again i am not quite sure about the resistors shown and where they should hook up if at all, i was kind of trying to keep what i had taken off the other cans but i now know that that might not be right.

Here is an intense MS Paint of the wiring without the resistors if it helps clear things up.

http://i450.photobucket.com/albums/qq222/dai766/CapRep.png

you can see where the burnout was and the resulting wiring to that post

gah i keep forgetting about the max image size in the forums, sry.

the white wire is replacing a brown wire that was near the D5 label on the bigger board, the green wire is from a addon contact point put there from the big burn out that happened before. i will post a picture below of where those wires come from.

http://i450.photobucket.com/albums/qq222/dai766/102_3873.jpg

Last edited by dai766 (2010-09-28 21:46:45)

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#10 2010-09-28 18:59:25

dai766
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Re: Fliptops Cap replacment question

ROBO wrote:

I'm pretty sure that with the fliptops kits you use the 40/40/40 cap in place of the existing one.

Next you would tie the 50/50 can leads together to get 100uf.

You would then use that 50/50 can and one leg of the 100/100 can in series for the Main supply (make sure that the 100/100 can is the one which is grounded).

After that you would be left with the one remaining leg of the 100/100 can and a single 100uf cap.

Once these two are wired in series it come out to a 50uf screen supply.
So it looks like the FlipTops kit does beef up the screen supply a bit.

would you tie both 50X50 cans together so that they both are 100X100's or just one? are you saying you want to leave one at 50X50 for the screen supply?

Last edited by dai766 (2010-09-28 21:34:45)

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#11 2010-09-28 21:34:03

hangman
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Re: Fliptops Cap replacment question

I'd like to see a larger picture as well with the other caps and such.

what are the green and white wires?
-steve

dai766 wrote:

ok now don't laugh, well actually go ahead if you want but this is what i ended up with when wiring the 50X50's like i said i got my guy at work to look it over for me before i fire it up but i figured i'd post it here so that either way it would be a picture example of how or more likely how NOT to wire the new caps in hmm

http://i450.photobucket.com/albums/qq22 … 2_3871.jpg

the red and orange wires are from the transformer
all the wires connecting onto the negative terminal of the left most can are from the board, the one black wire is the lead from the other 20uf 800v can from the fliptops kit. again i am not quite sure about the resistors shown and where they should hook up if at all, i was kind of trying to keep what i had taken off the other cans but i now know that that might not be right.

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#12 2010-09-28 21:36:01

hangman
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Re: Fliptops Cap replacment question

wait, so are the green and white wires the ground?

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#13 2010-09-28 21:37:57

hangman
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Re: Fliptops Cap replacment question

the negative on the 25uf 800V cap should go to ground. (the white and green wires)

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#14 2010-09-28 21:40:56

dai766
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Re: Fliptops Cap replacment question

Here are how the Original Caps were wired if that is what you wanted

http://i450.photobucket.com/albums/qq222/dai766/OldCaps.jpg

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#15 2010-09-28 21:45:09

dai766
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Re: Fliptops Cap replacment question

hangman wrote:

the negative on the 25uf 800V cap should go to ground. (the white and green wires)

well i put the negative from the 25uf 800V onto the + terminal cause the original 2X20 MFD 450V was wired that way, to the 40 MFD 450V off of the original cap.

Basically i don't know what the hell i'm doing so sorry for my ignorance, the guy said if i could fix it i could have it lol.

Last edited by dai766 (2010-09-28 21:50:08)

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#16 2010-09-29 05:49:07

hangman
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Re: Fliptops Cap replacment question

yeah,  in the original design there are two 40uf caps in series for the screen supply.  one by the circuit board,  and one inside the multi-can cap.  attached to the chassis.  That multi can is a 70x40x40 or something similar 
so the 70 and 40uf sections are paralleled to give you 110uf  and then the other 40 is used for the screen supply
fliptops gave you 1 20uf 800v to replace both 40uf caps.  so the negative terminal of that cap goes to ground.

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#17 2010-09-29 09:18:34

dai766
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Re: Fliptops Cap replacment question

hangman wrote:

yeah,  in the original design there are two 40uf caps in series for the screen supply.  one by the circuit board,  and one inside the multi-can cap.  attached to the chassis.  That multi can is a 70x40x40 or something similar 
so the 70 and 40uf sections are paralleled to give you 110uf  and then the other 40 is used for the screen supply
fliptops gave you 1 20uf 800v to replace both 40uf caps.  so the negative terminal of that cap goes to ground.

I see, thank you for the insight, otherwise i would not have known smile

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#18 2010-09-29 15:35:37

hangman
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Re: Fliptops Cap replacment question

you're welcome.  its an easy mistake to make. I'm surprised fliptops doesn't send detailed instructions with their kits...

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#19 2010-09-29 21:13:55

dai766
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Re: Fliptops Cap replacment question

hangman wrote:

you're welcome.  its an easy mistake to make. I'm surprised fliptops doesn't send detailed instructions with their kits...

do you have any insight as far as the wiring of the resistors, again i only have them on there because i was using the original setup as a template? i'm not so sure i even need them wired in there.

Last edited by dai766 (2010-09-29 23:25:13)

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#20 2011-03-09 09:54:13

josewails01
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Registered: 2011-03-09
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Re: Fliptops Cap replacment question

Hope this diagram helps. You should use the supplied resistors (these resistors distribute voltage evenly across caps, also known as "bleeder resistors").
http://i281.photobucket.com/albums/kk214/josewails01/v-4dualcanwiring.jpg

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