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Old 3rd Jan 2018, 10:58 pm   #55
russell_w_b
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Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
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Default Re: GEC 1000 phone not working properly?

Could you measure off-hook line current at yours and your mum's? It might be easiest to do this inside the telephone by breaking either red or white wire and inserting a multimeter on milliamperes range. Or connect a 100 Ohm (or similar) resistor in line and measure the voltage across it, hence current.

With the original carbon mic, of course.
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