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Sonic Impact 5066 Amplifier Upgrade - Page 5 of 10

I liked amt's example of an upgrade to this amp but I wanted to personalize my own.

Follow along with my play-by-play tear-down and reconstruction of my Sonic Impact 5066.

Here's the bottom view of the 5066. The battery cover can be removed by prying gently on the two plastic (fatigue life = ???????) clips and pulling it off.

The four rubber feet can be gently pried off (just retained by a dab of sticky stuff) giving access to the case's 4 retaining screws.

   
Here's what the inside of the battery compartment looks like. Each side holds 4 AA 1.5 VDC batteries. The red ribbons go under the batteries. When you want to remove the batteries, pulling on the red ribbons can help (especially if you don't have long/strong fingernails).

The four rubber feet have also been removed exposing the mounting screws/

Yep, Serial Number 040505350564, you're fixing to go "under the knife"!

   
This is what it looks like when the cover is separated. I know it's impossible to believe, but that little 1.25 in. x 2.75 in. PCB is the amplifier!

Notice the cheesy construction methods:

  •  Hot glue mounting of PCB to battery compartments and back plate
  •  Melted plastic pins to hold PCB to bottom cover stand-offs
  •  Over-use of solder
  •  No shielding
  •  Tiny weak wires

 

In order to further disassemble the unit, you must first gently pry off the 3 globs of glue holding the PCB to the battery compartments and the back plate. I used an Exacto knife to assist with this operation.

Next you must re-melt the two black plastic pins and then pull up on the board. I used an old worn out tip on my soldering iron and a lovely assistant (optional) to help me do this step.

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