Getting valve equipment repaired...

[DPERRY]

Hello all,

I have got a Wayne Kerr AF signal generator i am eager to get repaired, or even repair myself.

I am not really familiar with technology of this era, as it uses valves and even has paper capacitors inside of it. It initially worked, but was out of specification, so i measured the frequency control (paper/wax) caps by desoldering them and measuring them on a LCR meter. They all measred fine. When i put them back in the unit no longer worked and has since been subjected to replacement valves and re-inforcement of slightly dodgy connections.

It doesnt give any sort of stable output now and its latest problem is to burn out and pop the power valve so the top came off

Here is a link to the schematic

http://pdfcast.org/pdf/af-sig-gen-sche

So...my question...

Does anybody know anyone in the UK...preferably closest to Horsham, West Sussex as possible who would be able to repair this kind of thing?

Alternatively, please let me know any tell tale signs of write off to look for.

Thanks

[Simon (Webmaster)]

I'm afraid valve equipment isn't really my thing, but you could try asking on the radio bygones website. Radio Bygones is the sister magazine of Everyday Practical Electronics and they have an online forum at http://www.chatzones.co.uk/cgi-bin/discus/discus.cgi - someone there might be able to point you in the right direction.

[Weazel]

use a low to 100w light bulb in sereis as a current limiter for mains input and u prob just needed to adjust som internal adjusters but uve prob blown somthing send some pics of it close up to see damage and wat u may ov done wrong to scematic and look for valve repair books on google theres some free info on valve gear and its still used today just not wear ud think to look eg microwave