[AMRadio] 866 vs solid state

[CL in NC]

Has anyone had problems with replacing 866's with their SS equivalents in XMTR's that turn on the plate supply  to transmit, and blowing the plate transformers line fuse?  Did the 866's give a micrroseconds of  turn on resistance that did not hit the filter with the full 2100 intstanly?  This is occuring occasionally with a Johnson  500.  The filter bank is not stock, now is 33uf at 4500VDC and all caps are good.  The 5-25H swinging choke was replaced at one time with a 10H fixed.

Charlie, W4MEC in NC