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  1. J

    Loud Bell/Ringer for Mobile/Cell Phone

    Hi, we have a noisy factory area where we need to reach people by phone and we need a loud ringer so the people can hear it ringing. I am aware of loud external ringers but they only seem available for fixed LandLine telephones. I need one for a mobile phone. If possible I'd like a simple loud...
  2. J

    Keypad buttons not responding

    thanks everyone for their input. I've now soldered the wire in and its all working great. I'm sure I'll come back to this to read the notes on other projects. John
  3. J

    Keypad buttons not responding

    Thanks, I'll make sure to fasten the wire. I've made a note of what you said about the trace being fractured and re-soldering the leg on A2 and I'll look into that. Is there any was of being able to test if a trace is working (there doesn't look to be any hairline frature but I wondered if there...
  4. J

    Keypad buttons not responding

    Hi Gryd3, many thanks for your reply. Your explanation has helped me locate the problem. This circuit board connects to another board (with LCD panel) via a 15 pin ribbon connector. I identified which pins routed to which buttons and helped me work out that pin 1 (farthest left) was supposed to...
  5. J

    Keypad buttons not responding

    Hi everyone, absolutely newbie here with electronics but keen to learn. Ive attached a picture of a keypad which controls an old Windows PC. The A1 button stopped working so we had a company solder a new one in. When it came back it still didn't work - we always have the option of sending it...
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