Working on a local op's 'King Bee 150/250' amp. The receive amp doesn't work; receive goes dead when switched on. What transistor is used? What substitutes can be used? Schematic for this amp available/link? Possible biasing mods? Don't usually work on CB amps, just radios. Turned down the AM carrier to 2w to keep it from splattering. ANY/ALL info appreciated and welcome, as I can't seem to find much info at all about it. Thanks.