I got the Oehler 35p when it first hit the market 80's and 2014 the wires to the battery broke and I called Oehler they they told me how to fix them or I could send it back. I elected to fix them myself and was easy but I didn't get reading when I put in battery so again I called Oehler and send it back, they replace the board send it back no charge.
I called offered to pay as I used it 30yr years and he told me read the warranty that was on last page of the operating instruction for the 35 P.
Here it is. For twenty years Oehler has offered a very simple warranty, If you aren't satsified,we'll return your money. If it doesn't work, we'll fix it or replace it. While our written warranty for all those years has been limited to three years, we've repaired most unit no charge even though some were 15 or 20yrs old. Our customers are reasonable, if they shoot screen or accidentally smash chronograph, they expect to pay for repairs. If something breaks,wears out or just dies,we fix it free.