My PS-3 upgrade board finally made it into my MTH RDC Budd car. This is the project where my goal was to add smoke to the otherwise smokeless unit. All was going well, the sound file was loaded, and the unit fired up with lights and sound! You all know the old cliche, "If it works, don't fix it". Well, I don't always practice what I preach! I removed the cab, so I could switch around some lighting. I did NOT care for MTH's color-coding for the LED applications, so I did a trial and error! Oh yeh, ERROR! I cooked a component, that you can obviously SEE without any Tech testing! Just powered it up, and NO sound, NO lights......... POOF! There are two different images attached. I couldn't decide which showed more?
So here's the REAL issue for me, I can replace the cooked PS-3 with another, or even use a PS-2, BUT and this is the MOST important part of this post, WHAT CAUSED THE SHORT ORIGINALLY??? I do NOT want to ruin another board for the sake of succeeding with my project! I looked this project over and over, the ONLY possibility could be metal filings that ended up on the SPEAKER base (magnet) and MAYBE created a bridge to one of the speaker terminals? I'm reaching with this theory, but I want you all to have all the facts.