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geekhack Community => Keyboards => Topic started by: BiNiaRiS on Thu, 30 June 2011, 04:16:05

Title: Reviving an 1800. One key doesn't work.
Post by: BiNiaRiS on Thu, 30 June 2011, 04:16:05

So i've got this G80-1819 that I've been fixing. It originally had the AT cable chopped off, was missing a ton of keys and 2 of the switches had been pushed/bent and they didn't work right.

I've got it 99% working now. I unsoldered the 2 iffy keys and replaced them with ones that I knew worked. Replaced the = key, tested it and it worked. Then i replaced the D key, tested it, and it worked. So I put it all back together and now the = key doesn't work.

I thought it may have been the jumpers. When i used a solder sucker on them, it peeled the traces off. I figured it wasn't an issue...i just looked for where they connected and connected them with wire. I ended up desoldering the switch and and putting a new one on...same problem.

What should I be doing here to test this issue. I'm at a loss as for what the problem could be. I've looked for anything that could be on the PCB. There's no dripped solder or foreign objects.

Help meeeeee! :)

Title: Reviving an 1800. One key doesn't work.
Post by: Magna224 on Thu, 30 June 2011, 10:32:21

Who needs the equals/plus key? =P

Title: Reviving an 1800. One key doesn't work.
Post by: keyb_gr on Thu, 30 June 2011, 10:59:45

Continuity tester / multimeter FTW.

It seems quite easy to damage these Cherry PCBs indeed. BTDT. Thank goodness for jumper wires. I guess one of the switch pins needs one, too.

Title: Reviving an 1800. One key doesn't work.
Post by: BiNiaRiS on Sat, 02 July 2011, 20:02:08

Quote from: keyb_gr;370602

Continuity tester / multimeter FTW.

It seems quite easy to damage these Cherry PCBs indeed. BTDT. Thank goodness for jumper wires. I guess one of the switch pins needs one, too.

I got out my multimeter again and found the problem this time. One of the 2 switch pins wasnt connected to anything else but the jumper so it was dead. Jumped it with a wire and it works perfectly. Thanks!

Title: Reviving an 1800. One key doesn't work.
Post by: False_Dmitry_II on Sun, 03 July 2011, 02:15:01

I think you just revived a lost cause, good job.

Title: Reviving an 1800. One key doesn't work.
Post by: keyb_gr on Sun, 03 July 2011, 15:07:15

Congrats.

Last time I did this, I had to dremel a bit out of a support brace in the bottom case that was conflicting with the jumper wire. Had to get inventive to find out the exact position (women's cosmetics stuff tends to be useful).

What fun.

Title: Reviving an 1800. One key doesn't work.
Post by: BiNiaRiS on Sun, 03 July 2011, 22:41:14

Quote from: keyb_gr;372607

Congrats.

Last time I did this, I had to dremel a bit out of a support brace in the bottom case that was conflicting with the jumper wire. Had to get inventive to find out the exact position (women's cosmetics stuff tends to be useful).

What fun.

Haha damn...yeah I'm just glad I got it working. Most of the time I'd just say meh, but US layout G80-1800s aren't exactly the easiest thing to find.