How did you test the secondaries? Plug lead to plug lead, or plug lead to earth? Secondary should be some biggish ohms (tens of thousands - you might need a decent meter)
best way to test leads is to replace them as sometimes the break or leak or damage can be intermittant and may not happen until actually in use.
Plug lead to earth, could not understand why i was not getting any readings, got the primary ones ok, thought i might be doing something wrong.