Re: To Hakko 937 holders! adjusting tolerance? Changing from F to C?help!

Thank you for your reply. All your tips I had already explored before starting this thread. ))
Now the whole story!
Today I have found out that my brother bought it via alibaba from China. When I contacted the company which sold it for 75$ (Dongguan Fuyida Electrical Appliance Co., Ltd. - [url]http://www.aliexpress.com/product-gs/360019198-hot-copy-HAKKO-937-solder-station-high-quality-220V-free-shipping-wholesalers.html[/url]) they told me that it was me who couldn't hold both buttons still...

Hi!

I've just received a second-hand hakko 937 and first thing to do on my list was to test it. The temperature adjusting works fine. But when it came to adjusing/calibrating temperature and tolerance or changing form F to C, I got stuck because I couldn't enter the parameter mode to change tolerance (level at which it starts beeping due to temperature going low). I know it sounds silly. )) The manual says I should hold up and down arrows when switching it on until C or F appears on display... Well, I have tried doing it with and without key being inserted holding both bottons up...