Parasound HCA-3500 with blown outputs

I really appreciate you BigSkyAudio for posting some backstory on the mod and chiming in. I’m sorry my thread has gotten highjacked like it has by lecturing to never touch or change anything in a stereo because of some bad experiences people have had in the past with mods. The group is called DIYAudio, the whole point is sharing repairs, mods and new builds to learn from each other. I am a huge proponent of improving on original designs as needed and warranted, but also like to keep things original where warranted. Upgrading 25+ yr old electrolytics and diodes, removing excess bypass caps and replacing faulty transistors is no big deal and not destroying the amp.

I dont think we should blindly trust the original manufacturing of the stereo when so many cooks were in the kitchen thru its whole development, and the actual head chef has called out all of the superfluous upgrades that degrade the sound of the original design.