Very low output power on bands ffrom 20m to 10m

Thinking about what I saw yesterday I will have to agree the quality of the PCB is excellent. However not the last owner, but one of the previous owners **** up the BNC and broke it off the board. He then did a **** poor job of gluing it back and trying to solder a ground strap across it. I cleaned that up last night. Figured if he did that maybe other damage was done. Since for a few minutes I had full power on ALL bands doing the TUNE and it went away when I put it all back in the box then something like a cracked board or cold solder joint might be the cause....I am heavily leaning toward a cold solder joint based on having to find and fix SMD boards in the past. Time to get a webcam out and do some serious looking. The person I got it from I do believe he was unaware of the problem. You can not tell from looking at the PowerSDR display since it does not show real power out, but where you set the drive. No real SWR I found out. So if he always saw 100% why doubt it. People make contacts with peanut power every day. Besides he used it mostly on 160 and 6 meters 160 is putting out almost 4 watts and 6 meters 5 watts. I do believe from the half a dozen emails we have shared that he was clueless to this problem He used the radio for a lot of SWL it appeared. He love the pan adpator so much he went out and got a Excaliber SDR RX. In any case I emaile Flexsytems tech support last night also. Waiting for response. Might set up a webcam and get a **** of coffee and so some looking at each and every solder joint. As I said I have had to do this before. Thank your for your time writing back. 73 Harry k7zov