30-04-2020, 11:47 AM
When it comes to this, here's my standard advice:
Removing the screen connection is OK for a quick test, but be aware it's not conclusive, as the whiskers might have made contact with two electrodes. So don't give up hope if it doesn't work - after a proper "zapping", it's highly likely the transistor will be OK for another few decades.
Avoid cutting the screen wire - take the time to de-solder it. You'll need it later, after the zapping. OK, the screen might not be essential in many cases, but it is nice to put the set back to its original condition after the repair.
As I say, just my standard advice
Removing the screen connection is OK for a quick test, but be aware it's not conclusive, as the whiskers might have made contact with two electrodes. So don't give up hope if it doesn't work - after a proper "zapping", it's highly likely the transistor will be OK for another few decades.
Avoid cutting the screen wire - take the time to de-solder it. You'll need it later, after the zapping. OK, the screen might not be essential in many cases, but it is nice to put the set back to its original condition after the repair.
As I say, just my standard advice
