Skipps idea sounds good to me. It's possible that the filter cap has gone bad. When the transmitter puts a load on the power supply, some AC ripple is getting through that trips the crowbar.
73, Joe, k1ike skipp025 wrote: > > A test you might try... find one or two fairly large > (value) Electrolytic Capacitors as (or similar to the > one already) installed in the power supply. > > With relatively short clip leads or decent wire, parallel > one of the filter caps across the original Power Supply > filter and if you have a second test cap, parallel it on > the supply output. > > Then test to see if your crowbar trips. > > cheers, > skipp >
