the diode lead broke off right where it comes out of the cylinder dont know of a way to repair it. I had the amp connected to a light bulb limiter before the diode wire broke off and it was still lighting up so i dont think that is the problem. I feel confident that i checked everyhing so i dont know if its worth it to buy more parts if i cant get it working. is it possible to install the nte 128 and nte129 transistors in the wrong way? the transistor leads are configured in the same direction as the circuit board holes (triangle shape)