ITP A1 EOS SS / REPAIR

HI ALL;
I AM NEEDING HELP WITH THIS ITP A1 I HAVE HAD SINCE DECEMBER 2011,PURCHASED IT NEW IN THE BOX ETC... FROM A SELLER ON EBAY. LIGHT WORKED GREAT FOR MAYBE AN HOUR, TWO HOURS AT THE MOST. IT TURNS ON IN LOW MODE AS NORMAL, TWIST TO MEDIUM AND ITS OUTPUT DOES CHANGE SOMEWHAT, MAYBE 5 OR 10 LUMS, TWIST TO HIGH MODE, IT DOES NOT CHANGE AT ALL, SIMPLY STAYS AT THE SAME LEVEL OF LUMS. I HAVE TRIED TO TRACE DOWN THE ORIGINAL OWNER WITH NO LUCK AT ALL. I HAVE TRIED COMPANIES THAT DEAL AND SELL ITP(will mention no names), A TOTAL OF 4 ALL ENDING WITH SAME RESULT, ZERO HELP, I CAN'T EVEN GET INFORMATION WHERE TO SEND IT FOR ANY KIND OF REPAIR MUCH LESS WARRANTY WORK. I LIKE THE LIGHT EXCEPT FOR THE INTERFACE, HAVING TO TWIST 3 TIMES TO REACH HIGH MODE IS ANNOYING FOR SURE, HOWEVER ITS SMALL SIZE AND OUTPUT MADE IT A VERY NICE BACK-UP UNTIL IT STOPPED WORKING.
AT THIS POINT ALL I KNOW IS THAT ''ITP'' IS IN CHINA, AND MY LIGHT SITS IN A BOX NEEDING REPAIR. I AM POSTING IN HOPES SOMEONE MAY HAVE SOME ADVICE FOR ME, MAYBE AN ADDRESS OR EVEN A MODE FOR IT, AS I READ A POST WHERE SOMEONE DID A MODE ON ONE OF THESE TO THE TUNE OF 750 LUMS, ALMOST TO 800 IF MEMORY IS CORRECT.
PLEASE REPLY IF ANY MAY HAVE INFORMATION THAT MIGHT PUT ME IN THE RIGHT DIRECTION.
THANKS SO MUCH / GOD BLESS

Try a new battery and clean the threads and contact points with something , tv tuner spray or rubbing alcohol or something. when my Fenix wont go to high its because the battery is just about dead

itp a-series SS is a fine light. let's see who can help!

Listen to purelite. Sounds like a bad battery to me too. If not, I would add that you should clean and re-seat the spring as well. Pay particular attention to the battery tube face(it makes contact with the outer ring on the PCB.)

Good luck and :welcome:.