Re: Todd repair questions (it works now)

[Paul G <neong@gte.net>]

Hi,

I wanted to thank the list for the help. The repair would have been done
much sooner except for a Newark messup. On the positive side they credited
me for the order they shipped to the wrong adderess then sent me the parts
again as promos (free).

I replaced the MUR460's on both boards with new diodes of the same type. It
was listed and available from Newark for 60 cents each in single unit
quanities (I found another place later that listed them for 36 cents each).

It seems that there is a reason that the slave board went but not the
master board. The master board has another winding on the transformer that
looks like it would remove some of the load from that diode. If I'm
guessing right, that is the voltage feedback (?). Well, I had pulled the
board out already and figured I would install the new diode with a longer
lead lenth like the other side (the main cooling for the diode is out the
leads). The master board diode didn't have darkened lead in wires. Is that
extra winding the reason that diode survived?

Neon