Apollo 87H-T-SC problem
Hello Geon & team,
I have been enjoying my 722, testing switches in the apollo before proceeding with soldered builds. I have done about 4 different builds on the apollo with no problems. When I came to my desk this morning, I discovered that 3 keys are not functioning correctly. When hitting "2", "12" is entered instead. When hitting "w" or "s", "qw" or "as" are entered instead. Aside from 2, w, and s, the rest of the pcb is working as intended.
In terms of troubleshooting, I tried resetting and flashing the newest .bin file https://discord.com/channels/743801649377574924/811452141570752523/1114928079207403580 from here, and I inspected the back of the pcb for damage. Visually I don't see anything, and the behavior remains after flashing. I think this means it is ESD damage, so I would like to know if there are options for repair.
Since I have 1 less pcb than planned, I will also be emailing the store later this afternoon to see if I can add another galatea to my v2 order, thank you 
18 Replies
@gondolindrim_ any tips when you have a spare minute 
Can you test with tweezers? Remove all switches
will dissasemble and take a look ty
issue persists with tweezers on bare socket, "2", "w", and "s" exhibit the double press behavior.
It must be grounded, but looks like the issue is inconsistent. Previous issue was 1 was also registering when 2 was trigerred, etc.
Sorry, by double press im referring to the behavior in my original comment, "12", "qw", and "as", so the behavior is the same for a mounted switch as well as tweezer on socket
This really looks like a socket issue
Are 2, W and S the only keys with this problem?
that's correct! they were fine til 1 day I went to my desk and they weren't
I thought since they were in the same column it meant a short, but then the whole column isn't affected so 
idk the electronics details behind it
idk the electronics details behind itWell they can be weirded on the row
But if the other switche son the same row are not having the same issue, this might be a socket thing
Have you tried cleaning the PCB and testing it outside of the case?
yes, when I tested the tweezers on the sockets with all the switches removed, the pcb was outside the case and the behavior persisted. I didn't clean anything though, I will look into that
my next step should be to desolder and replace the affected sockets?
That would be my first choice
do I have to get replacement sockets or can I just directly solder 3 new switches in?
actually if I removed the socket and the issue still occurred when testing with tweezers that would mean it's something else
so I'll start with that and see what happens, thank you
There is a chance that the socket pads are damaged somehow
In that case it would be difficult to fix it
There are no pads for the switches to solder into
so I couldn't test it until I put new sockets on?
I don't mind writing it off since I got a lot of use out of it, just don't want to let it go to waste if the repair is feasible you know
You can test
If you remove sockets and PCB works, problem was sockets
Solution
If you remove them and it does not work, problem was pads
We can still wire it and fix it
Just some work, but it's definitely fixable if you have the patience
I don't have the desoldering equipment on hand and this thread is getting long, if you don't mind I will mark solved and dm you once I return to this project if these first steps aren't enough
Sure