Colecovision 5V RAM mod going wrong

I have a ColecoVision that I managed to clean and make it to almost work.

I noticed quite few gfx glitches that did affect gameplay and after reading about it I decided to perform the 5V RAM mod with MB8118-15 chips from Console5.

After the mod nothing works anymore, I'm pretty sure the sockets and the chips are good.

What does normally go wrong performing this mod?

I already checked for continuity and all pins of the RAM chips do not seem to have shorts and do have a clean path all the way to the TMS9928 as they should. The all receive the correct 5V on the right pins etc...

I thought I may have cut a trace or bridge some with solder but I can't really seem to find anything obviously wrong.
I already checked the /RESET line and it is high at both the TMS9928 and the Z80 so that seems alright.

Anything else obvious to be looking for?

 

It seems that in the process I damaged L9 and it made me go for quite a spin.

I also noticed that with the new 5V RAM I need more juice on my 5V rail (I had to replace the broken power supply with a homemade one based on "el cheapo" Chinese chargers, it was less than 8 US$ to get one 12V 1A, and two 5V 1A, but they are not too good).
I ordered a 2A 5V "el cheapo" Chinese charger that should be able to stabilize my 5V rail and see what I get then.

I do have an LM318 based AV mod, for now I can see the Coleco start-up screen coming up in B&W on a LCD via AV composite, and with wrong colors on CRT (both RF & AV composite) ... If I put a game in nothing works and the 5V rails goes down to 4V or less so yeah ... need more juice there (the old 4116 RAM used little power on the 5V rails, but the replacements [in my case MB8118] require a beefier 5V supply).

That L9 really threw me off, I wonder if I can simply completely bypass it (it's a 43uH inductor on the Y line out of the TMS9928).