could this fix "no signal on boxes "

it will only work in certain circumstances universal or quad LNB on your dish. otherwise it will be the lnb playing up.
 
A few members have said that it has fixed their problems, but it only works for missing vertical channels & only when the box is used with another box on the same LNB.

It's just a diode in series with the LNB feed.

btw..cannot follow link. Even when trying the item number, it says it doesn't exist.
 
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