When I originally installed the pcb, it worked for a few seconds, then the board died. I'm an electronic tech, so I put my troubleshooting skills to work and found that the power connector used to attach to the pc board shorted. The wiring harness wires weren't fully installed ( done at the factory, not by me!),causing the wires to touch. This short burned-up one of the diodes. I ordered several diodes and replaced the shorted one. The True Blast Sound Unit now works! If you happen to add this unit to unit trains, inspect the wiring carefully before installed. BTW, the unit sounds great!
Verified purchase: Yes | Condition: New
Really easy to install and produces good sound. Unfortunately, Williams does NOT seem to be producing these anymore even though they are advertised.
Verified purchase: Yes | Condition: New
I was pleased with the final results after the installation which was not simple. It is not a difficult process for someone with some experience with locomotive sound systems, but it is not plug and play.
Verified purchase: Yes | Condition: New
Very low volume
Verified purchase: Yes | Condition: New
Verified purchase: Yes | Condition: New
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