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#1 2013-01-15 21:43:53

deadsled
New member
Registered: 2013-01-14
Posts: 4

V4-b need help replacing caps with a fliptops kit

I am not stranger to using a soldering iron but my engineering skills are lacking! A friend wants me to upgrade his v4 with this cap kit from fliptops. The amp currently has some axial caps where the new cans from fliptops would go, I'm just not sure which can goes where or which wire gets soldered to which lug! It came with no instructions or help sheet. Please help!



http://tremorsrockabilly.com/slim/v4/photo%202.JPG

http://tremorsrockabilly.com/slim/v4/photo%205.JPG

http://tremorsrockabilly.com/slim/v4/photo%204.JPG

http://tremorsrockabilly.com/slim/v4/photo%203.JPG

Last edited by deadsled (2013-01-15 23:09:33)

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#2 2013-01-15 23:12:45

deadsled
New member
Registered: 2013-01-14
Posts: 4

Re: V4-b need help replacing caps with a fliptops kit

The can on the back right corner, 3rd picture, is pretty straight forward, just a straight one to one replacement. the others, however, have me a little perplexed! I doubt those diodes next to the bias adjust are original not to mention the two 450v 100uf axial caps in the middle of the chassis. Will I have to drill out those rivets and replace that with the other two cans that came in the kit?

Last edited by deadsled (2013-01-15 23:14:22)

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#3 2013-01-15 23:39:00

hangman
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From: Seattle Washington
Registered: 2006-09-04
Posts: 1848

Re: V4-b need help replacing caps with a fliptops kit

The diodes are original,  those are the flyback diodes,  you can leave them in (a lot of people do). Or take them out.   Search for flyback diodes for arguments on either side.

The two caps above the board (by the flyback diodes are your screen supply filters.   The red and white wire that connects to the silver caps positive terminal should go to the big 7 watt 470ohm resistor on op of the circuit board.  The side towards the inside of the board.   If it isn't (and I can't tell from here). Then we need to figure out what is.

The black cap right next to the silver one has its egative end going to the power amp ground plane.   It is a brown wire and is likely the same one ampeg originally used... Although it has been shortened.

Whoever worked on that did some sloppy work.  It isn't hard to keep it looking nice and clean in there. 

-Steve

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#4 2013-01-17 01:43:26

deadsled
New member
Registered: 2013-01-14
Posts: 4

Re: V4-b need help replacing caps with a fliptops kit

Ok, just that those diodes joints looked fresh and new. someone might have touched them up when they did the cap work previously. So, I got a little help from fliptops and was provided a diagram but like I said my engineering skills aren't the best and reading the diagram is a little challenging. Anyone have some pictures of a recap of a v4b with a fliptops kit that I can reference? you can send them to deadsled at bellsouth dot net. Thanks for the help guys.

Last edited by deadsled (2013-01-27 21:23:05)

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#5 2013-05-29 03:50:25

deadsled
New member
Registered: 2013-01-14
Posts: 4

Re: V4-b need help replacing caps with a fliptops kit

I am still needing some help with this if anyone is willing. Since I am replacing these with multi caps like the originals I cannot just replace wire for wire and have to do a little rearrangement of the wiring. Since I have never done this I need a little assistance just to make sure it's hooked up correctly. Please guys, maybe just some reference pictures of how it's supposed to be wired...anything!

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