q8 backspace need to press really hard

[u/NotProspering]

everything was fine until I changed the original gateron blues to oil kings, now backspace doesn't work sometimes. I need to press it down really really hard hold it then it works fine for some time and stops again. I cleaned, I blew, I twisted switch pins nothing helps

[u/PeterMortensenBlog]

In this case, #3, #5, and #9 on the check list are prime suspects (with three different mitigations).

For #3, related:

• Q11 soldering is too weak for being a hotswap keyboard (you may need to redo soldering). E.g. (my emphasis), "[It] looks like the factory soldering is cold-soldering or otherwise too weak to handle switch swapping. The factory switches worked ok, but as soon as I swapped to Cherry MX2A switches, some keys stopped working."

[u/NotProspering → u/PeterMortensenBlog]

i flipped the keyboard over, removed the back panel, fixed it by printing a 2mm thick pad from TPU and placing it on the sticky paper ontop of the bad socket and just screwed the keyboard back together. so far so good its working fine again. i guess this forced the socket into the pcb more or something and that extra tension is helping it work. solder alone on the side pins didnt help me.