Unpacking a box I hadn't touched for donkey's ears (must have been close to 15 years...) revealed a once sincerely loved tool: my old 41CX. My heart immediately started racing like I'd just found a true treasure (which was absolutely true, in a certain sense). Although there were no batteries in there, the contacts inside showed a bit of corrosion and other wear and tear. I decided to clean the contacts and order four new LR1s. Well, batteries arrived, but once inserted, the display briefly showed a row of what looked like inverted @-signs, and my old love started to cry: a continuous (non-intermittent) beep. I took out the battery compartment and checked polarity. All okay. Re-inserted the batteries and this time no sound, no characters in the display. I hit the On button, and it started beeping again, but still no characters. Now, it just beeps as soon as the batteries are inserted and I switch it on. I checked the batteries, and they seem fine: 1.5 volts each.
Anyone out there with an idea of what might be causing this? I'd really like to get my old love to smile at me again

Many thanks in advance & Kind regards,
Rob