dfrattaroli
New member
Before I start I want to point out that I've never worked on amps before. I'm a pretty "handy" guy and have built a solid body electric from scratch that I've been playing every day for 11 years now. I also do carpentry as a hobby and household electrical work as well. But amps always scared me. I spent a good deal of time researching things like discharging caps as well as working on this amp in particular. Before today, my DSL chassis had been laying on my bench for 2 weeks fully discharged with my bleeder wire attached at all times. I would walk in and read my meter just for the hell of it. I even switched the amp on and watched the meter just to see the bleeder wire work, speeding up the bleeder circuit already in the amp. My point is, I take nothing for granted.
Now, before I touched the filter caps, I got my feet wet by doing some simple and commond mods for the DSL: pulling C12, replacing C46 with a 1kV cap and doing the speaker jack mod from under the board.
Last night I decided to pull the 330uF 315v caps and replace them. Below are pics of the place where the old caps used to live. I also learned first hand, when desoldering, add more solder.
Below the board...
On top...
Now here are the new Nichicon caps. These are larger in diameter than the stock Samwha caps that came with the amp 16 years ago. I put one in as low as I could and then got the next one in as low as I could without putting too much pressure on the leads. The original caps were snap-in style. I used a zip-tie just to hold the orientation before soldering in the 2nd cap.
And from below...
Going to continue with the rest of the caps today. My choke gets here on Thursday.
Thanks!
Dave
Now, before I touched the filter caps, I got my feet wet by doing some simple and commond mods for the DSL: pulling C12, replacing C46 with a 1kV cap and doing the speaker jack mod from under the board.
Last night I decided to pull the 330uF 315v caps and replace them. Below are pics of the place where the old caps used to live. I also learned first hand, when desoldering, add more solder.
Below the board...
On top...
Now here are the new Nichicon caps. These are larger in diameter than the stock Samwha caps that came with the amp 16 years ago. I put one in as low as I could and then got the next one in as low as I could without putting too much pressure on the leads. The original caps were snap-in style. I used a zip-tie just to hold the orientation before soldering in the 2nd cap.
And from below...
Going to continue with the rest of the caps today. My choke gets here on Thursday.
Thanks!
Dave