TMC 1705 (GPO 704) Linesman phone Ring Generator issues...

[twocvbloke]

And no blummin' wonder too!!!  

Ever since I got this Linesman phone, it's not always made phones ring properly, the frequency is never right and just wasn't sounding right, so, I decided to poke about on the Ring Generator board, and low and behold, one of the capacitors (C2) is shorted (with help from a friend to let me know how to test caps without a proper ESR meter)...

So, now I need to find a couple of 10n 250v capacitors, a couple cos I'd rather have both replaced at the same time, just because it'd be easier to do both in one go than to have the other fail and have to pull the thing apart again, still, at least I know why it hasn't worked right though...

And pics, first one, the bad cap I marked with a black pen, and the second pic is the circuit diagram pasted inside the lid of the phone set, and you can see how it has an adapted 700-series transmission circuit, so it's a 700 with extras...