Help with Mullard E7600 Valve Tester

[Yorkie]

Hi Everybody,
I have been given a Mullard E7600 Valve Tester and two boxes of cards. Having never used one of these valve testers are there any hard and fast rules for checking correct operation and also on servicing these units. Also how many cards should there be???

Many Thanks
Luke

The links below might help.

First is the 'Card Project' run by a guy who is trying to collate all of the cards. You'll find a lot of info there as to the number of cards. A tester without the cards is just an obsolete curio - not a working intrument. You must have the right card for which ever valve it is desired to test:

http://home.btconnect.com/gmb/mullard.htm

At this link you will find a manual at a 'buy it now' price if you don't have a manual:

http://www.ebay.co.uk/sch/i.html?_nkw=mullard+e7600

At this link, you'll see cards on offer, which will give you an idea of what they cost, which isn't actually a lot, but it mounts up if you need lots of cards to replace missing ones:

http://www.ebay.co.uk/sch/sis.html?_nkw=...brimar+avo

These testers were designed to be used by non-technical counter staff in radio shops, so that when - as often happened in the 1950s - customers came in and said 'can you test these valves for me?' a quick test often resulted in a quick sale and didn't hold up other customers. It literally took just a couple of minutes. When I lived in Grimsby in the late 1960s - early 70s, there was a shop that charged sixpenece to test a valve (2.5p in today's coinage).

Best of luck with it Luke - hope the links hep a bit.