QWERTY Row on Logitech G710+ unresponsive after wine spill.

[GreenSnail]

About a week ago I spilled a glass of wine on my keyboard, immediately unplugged, and dried following this guide http://imgur.com/a/9sHx7. Now this may have been presumptuous on my part (it wasn't a large spill), but about 6 hours after I pulled the keys off, vacuumed, and towel dried my keyboard I decided it was okay for use. After a couple hours of use and a night of being left on, the QWERTY row became unresponsive. I unplugged and cleaned with isopropyl and then left it out to dry for 5 days. I just plugged it back in and the QWERTY row is still unresponsive. I'm assuming that the culprit is a short. So I guess my question is how do I repair the short, or am I better off just ordering a new keyboard?

 

[Ralston18]

You may still have a short inside the keyboard and/or the cleaning process damaged the keyboard resulting in a short.

Google "computer keyboard matrix" to see how the key contact patterns work.

E.g. the following link:

http://xahlee.info/kbd/keyboard_n-key_rollover_key_ghosting.html

Test all of the keys again to narrow down where the short may be.

Probably nothing to lose by popping off the applicable key caps and trying to clean again.

Doubt that the keyboard will be repairable otherwise. If you do find an option or two - again, no harm in trying.

 

[Alabalcho]

As in the movie, "just follow the yellow path".
Keyboard keys are connected in a matrix - horizontal rows, and vertical columns. In your case it seems that the "wire" connecting second row got broken.

Whether you can repair it or not - You have no other use of this keyboard, so open it and see how it is made. If you are lucky, you'll find a solid PCB where you can solder piece of wire over broken section. If you have drawn the shorter stick, you'll find sheets of plastic with metal paths embedded, and you'll have to improvise (you can't solder there).

 

[GreenSnail]

As in the movie, "just follow the yellow path".
Keyboard keys are connected in a matrix - horizontal rows, and vertical columns. In your case it seems that the "wire" connecting second row got broken.

Whether you can repair it or not - You have no other use of this keyboard, so open it and see how it is made. If you are lucky, you'll find a solid PCB where you can solder piece of wire over broken section. If you have drawn the shorter stick, you'll find sheets of plastic with metal paths embedded, and you'll have to improvise (you can't solder there).

It is indeed a solid PCB and I was already exploring the option of soldering but I'm not quite sure how to go about it. Would you happen to know of any guides or videos that you could link?

 

[GreenSnail]

You may still have a short inside the keyboard and/or the cleaning process damaged the keyboard resulting in a short.

Google "computer keyboard matrix" to see how the key contact patterns work.

E.g. the following link:

http://xahlee.info/kbd/keyboard_n-key_rollover_key_ghosting.html

Test all of the keys again to narrow down where the short may be.

Probably nothing to lose by popping off the applicable key caps and trying to clean again.

Doubt that the keyboard will be repairable otherwise. If you do find an option or two - again, no harm in trying.

I'm planning on cleaning the back of the PCB with some contact cleaner and maybe doing either a full isopropyl bath or running it through the dishwasher to eliminate any cleaning concerns. There is some residue on key contacts but I'm not sure if that would make keys unresponsive. I can provide a picture in the morning.

 

[Ralston18]

Would not do "dishwasher" or full isopropyl bath especially if you can see residue on the key contacts.

Focus on simplicity and just gently clean the contacts until the residue is gone.

If that fails to fix the keyboard then there is probably nothing left to lose via the more extreme cleaning measures.

And remember that the alcohol is flamable; really do not recommend a full bath. Use cotton swabs and small amounts of alcohol.

 

[GreenSnail]

Would not do "dishwasher" or full isopropyl bath especially if you can see residue on the key contacts.

Focus on simplicity and just gently clean the contacts until the residue is gone.

If that fails to fix the keyboard then there is probably nothing left to lose via the more extreme cleaning measures.

And remember that the alcohol is flamable; really do not recommend a full bath. Use cotton swabs and small amounts of alcohol.

Status update: A friend of mine that builds keyboards pointed out that I have a number of corroded traces on the board. I'm in the process of attempting to clean them.