[AMPS] Yaesu FL-2100B Power Supply Problem ???

[UNCRICHIE7@aol.com]

A question for you power supply guru's !!! I received a Yaesu FL-2100 B 
amplifier. The inerds looked pretty ancient. I guess they should for a 30 yr. 
old amp. I replaced the rectifier diodes with 1N5408's. Also replaced some 
dryrotted B-Plus wiring. I also installed the Rich Measures Step-Start 
circuit, which I disabled in order to trouble shoot the following problem. 
The step start circuit seems to operate correctly, And I have eliminated it.
I decided to use low startup voltage in case I made a wiring mistake (which 
is possible but not likely unless I have continually looked at the same 
mistake and haven't noticed it).
Everything is fine til the rectifier puts out 290-300 volts then the fuse 
blows (20A, 120 volt operation) Would a bad filter cap cause this even at the 
low voltage I'm seeing.
Or would this indicate a latent transformer problem, I'm really open for 
suggestions here, its driving me nuts.
All output voltages on the transformer are correct when I tested them. As 
always any help would really be appreciated.    Kurt A. Lacko...

--
FAQ on WWW:               http://www.contesting.com/FAQ/amps
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com