BK Precision 1465 Help with Repair

[Ernest1]

So I just got this oscilloscope a few days ago and initially it didn't have a horizontal line on the screen but it was displaying off to the left like in pic 1 and I fixed that by messing with the break out board thingy at the back of the crt in pic 2. I tested it out a bit after wards and decided to clean it since it was working well.

I took apart and cleaned the front panel and all the knobs separately with alcohol electronics cleaner and Windex for the screen.
This is where I think I broke it, I sprayed the bottom of the bottom board pic 3 and pic 4 with electronics cleaner and used a tooth brush to clean the dust off but while I was doing that I heard something hit the floor and I found this little solder nugget pic 5, pic 6 with dimensions  L 3.5mm W 1.2mm and I thought nothing off it. When I turned on the oscilloscope the screen lit up but there was no line and I turned the knobs and the DC BAL pot I can see the screen the screen brightens move up and down or left to right as if there was a line but the size of the screen and very dim. I tried to find where it fell from and found a likely spot but it didn't change anything after jumping the traces, I also tested the resistance and voltage before hand to make sure doing that doesn't blow it up. I have no idea how these oscilloscopes work internally so im reading a guide on fixing oscilloscopes from this forum but in the mean time if anyone has any suggestions or knows what the issue is please let me know im really sad right now