<HTML>Clewis The first thing you usually see is some  numbers flashing sequentially.= .. 1.2.3.4.5. etc.  Four digits worth, I think.  Then it goes to t= he processor version number, on a Concertmaster it should be 1.51  (unl= ess they have updated it).  Then it will flash the number of the test y= ou have the dial set to, something like -02-.   When you  pre= ss the "start test" button it starts that particular test.   = If the display is getting stuck earlier in the sequence, it may be "possibl= e" that you have a bad box.  It is more likely that you have a short in= the system, or something not hooked up properly.    Do you h= ave the short tester, or the resistor box?  You really need those to fi= nd out if you have problems.   For the first startup, I always con= nect the resistor box into the system.  You say it is working perfectly= .  What do you mean?  I would check the cables thoroughly. &n= bsp;  If you have further problems, call Steve Bryan at Baldwin. &= nbsp; Steve knows these things thoroughly, and is very good at logically wor= king through situations. Roy Peters Cincinnati </HTML>