bob if this amp had never been used, why did you replace the bleeders but not the filter caps? I would have done the exact opposite. I don't even know who made the PT-2500A. that model number is completely unfamiliar to me. 73 rob K5UJ On Sun, Dec 9, 2012 at 2:56 PM, bob <n612dw at gmail.com> wrote: > A tome on a PT-2500A (2x 3-500) -seeking advice