When Wellbrook was in business I used to buy a new FLG100LN every year due to nearby lightning discharge zapping it. Now I make my own, using one of Everett's boards. My current one died last week--there was a nearby discharge that came over before I could go out and disconnect everything. I repaired it today, second time I've repaired one. This had 3 bad jfets on one side and one bad jfet on the other side. Both bipolars were good. You have to remove all the jfets before you can find the bad ones. I use an inexpensive tester, "TC1", that does a good job testing jfets (and lots of other things too, of course).
73,
Steve AA7U
