crwdns2933423:0crwdne2933423:0

crwdns2933803:02crwdne2933803:0

crwdns2933797:0Dave Empsoncrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Dave Empson

crwdns2933769:0crwdne2933769:0
crwdns2933771:0crwdne2933771:0
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crwdns2933807:0crwdne2933807:0

-[* black] Check circuit board for any dry solder joints (re-flow solder with soldering iron if necessary). Maybe also clean switch with switch lubricant. Unfortunately this didn't fix the fault.
-[* black] My final repair attempt, was to heat up the circuit board in a fan oven to heal any microcracks in the solder. I started at 5 mins at 120C and went up in 10C steps, testing after each step. After 160C, the keyboard was working much better, but after 170C it was dead!
+[* black] Check circuit board for any dry solder joints (re-flow solder with soldering iron if necessary). Maybe also clean switch with switch lubricant. Unfortunately this didn't fix my fault.
+[* black] My final repair attempt, was to heat up the circuit board in a fan oven to heal any invisible microcracks in the solder. I started at 5 mins at 120C and went up in 10C steps, testing after each step. After 160C, the keyboard was working much better, but after 170C it was dead!
+[* black] Hopefully your repair will be more successful.