Ultrasonic A1534 keyboards

[ALB-Repairs]

Thinking as these are PCB based not membrane then surely you could ultrasonic these keyboards with success (especaily if the keys work but are sticky?!)
anyone tried this?
Thanks

 

[dukefawks]

Not tried, but if it is fucked what is there to loose? Still, there must be some sort of membrane under the keys that will retain liquid and will corrode.

 

[SMMRepair]

And the keys might come out looking funky/discolored. The ultrasonic does some weird stuff to plastics sometimes.

 

[ALB-Repairs]

Not fucked but very sticky. Ive repaired one before where there was corrosion on the PCB for the keyboard which was a nice bonus,
I think ill stick to pulling keycaps and cleaning it rather than ultrasonicing it for now.

 

[dukefawks]

Dont pull the caps, they are very easy to damage!

 

[peterfixit]

ive previously ultrasonicd membrane keyboards, almost all of them have died, even after alcohol bath and leaving to dry overnight, mechanical keyboards work after ultrasonic

 

[george-a]

what if you just bathed it in alcohol? and while dipped press the keys to get the sticky shit out of the way?

 

[peterfixit]

it wont remove the stickyness, try alcohol and a toothbrush, but i think it has something to do with the liquid getting between the layers and changing the resistance, or something of the sort

 

[ALB-Repairs]

keycaps are pretty not pullable.

they have rubber domes just like allot of keyboards. However they have a PCB backed board not a layered sheet of plastic. All keys are connected via copper. Hence thinking it may work.
Theres something not right with the keyboard/sleep sensor as its constantly going in and out of sleep. When the keyboard ribbon is connected it gets stuck is sleep 90% of the time.

 

[dukefawks]

Sleep sensor is on the keyboard, it's under a small cover on the side. Could also be corrosion in the connector.

 

[ALB-Repairs]

Tried this on a scrap keyboard. Some of the function keys fell off, looks like the F keys are glued on. (saying that i left it face down in the cleaner, so it may not happen if you pay more attention than i did.)

Will check the condition of the rest of the keyboard and get back to you guys.
It was dried on a preheater with the heat hitting the inside of the palmrest (not the keycaps obviously) I may actually be on to something with this.