Thanks for all the suggestions.

Stan did reply indicating that the schematics are proprietary which was disappointing but understandable. I was under the assumption that this information was available with all the modding going on. I probably should have asked this question before I started modifying it. It is quite interesting how some companies hold everything close to the vest and others do not. For example about a month ago I requested a schematic from Rotel, and they sent me one after I provided them my serial number. With most of the electronics on the market, there really is nothing secretive inside of them.

I spent about 7 hours checking everything out. The new regulators are installed correctly as it worked for a period of time. The polarity of the caps are also correct.

Interesting point regarding the tape. I removed that in order to try to get the cover back on. The cover has been off since the beginning as it will still not fit with the Nichicon Muse caps installed on the op amp board. I believe the caps you are referring to "TC2 " just to the right of the DAC chip may have hit the leads of the DAC. Or, my ribbon cable breaking may have caused the short elsewhere.....

I am going to order a Caiman from Stan and he said he would sell me a new board as well for my TC-7520. What I will likely do is start all over with the TC-7520 mods and leave the Caiman as is. This way I will never be at a loss for sound