That so called safety bar has been the cause of many SB220 failures. That
short often takes out the zener ZD1, R-3 and the PS diodes. Ive also seen
the gid chokes RFC-4 and RFC-5 open.
The first thing I would do is toss the MFJ box as it isnt necessary for the
220. Inrush surge is kept to a safe amount by the design of the
Check the items I mentioned and then try the amp directly into the wall
outlet. If it works then leave it alone.
----- Original Message -----
Sent: Monday, July 09, 2007 8:33 AM
Subject: [Amps] (no subject)
>I am a newbee non technical novice. I bought a SB 220 . Changed the wiring
>according to the manual from 110 to 240. Plugged linear into a mfj soft
>start plug and blew a fuse in mfj box.( power off on linear whole time) .
>Inspected the linear and discovered that the interlocking spring was
>hitting the metal spacer mounted on the feedthrough insulator.?Adjusted the
>phenolic spacer and made sure spring pushed away and clear.? Still blew a
>fuse in mfj soft start box....can anyone help me here? not sure what to do
> thx W1RAB
> AOL now offers free email to everyone. Find out more about what's free
> from AOL at AOL.com.
> Amps mailing list
Amps mailing list