I know NSI gets a bad rap, but
IMO things have dramatically improved over the recent months
If you
call 1 800 478 5772 select NSI and then select SUPPORT not parts, You might get an answering machine, leave your name and number they are good about getting back to you.
They have these parts in
stock and they usually will ship it out to you right away no charge, I suggest you ask for a few of them.
This is a problem with this sort of
fuse holder, it uses a
ceramic fuse, and when it blows from over
current draw, it breaks and fuses *(sorry)* to the holder.
You need to take the top screws off and the bottom screw off the aluminum head sink on the side you are needing to replace. there are a series of wires that are connected to the side board,5 if I remember. I suggest you label them so you can get them back in the correct order, and then there is usually a multipin
connector. there is no alignment pin in the multi pin so watch how it is connected. The
fuse is soldered in two places from the underside of the pc card, and has an alignment pin in the front, you just need to de solder it and then re solder in the new
fuse holder. It is pretty robust connection and pc
trace so it can take a
bit of heat to get a good solder joing. This is a very comon problem with these units, Usually someone thinks that it is 2400 watts per connection and decided to
plug in two fel's or something like that and it blows the
fuse, and then you cannot get the
fuse out. Typically it has a 12 amp
fuse, I know a lot of them also have 15 amp fuses, which if you think of it is pretty large amp
rating for a tiny
ceramic fuse at 120 volts.
I use a lot of these, and for me that work well, many times people get the wrong load
rating for them and think that just because they have 2 edisons per input that they can some how distribute the load differently. If lyou have the two
wire version, I recommend keeping the load under 1000 watts on each
channel, and if you have the single
power, keep it under 2000 watts total. Overloading is a common problem.
The other thing is that NSI uses for
MPX and
DMX the idea that you simply set the
dimmer number NOT the
dmx address that you are starting at, and this trips people up all the time, SO for instance if you set the dip switches to 2 then your
dmx channels are going to be 5 6 7 8. This is the source of a lot of I cannot get it to work since nowhere on the
dimmer does it say that and when they are moded for
DMX it does not say that either. NSI uses this
system on its DDS version of the rack dimmers also.
Hope this helps
Sharyn