Dex I have just looked at the circuit digrams for my SPM-12 and find that
the orange coloured display is MAN 3640A 7seg LEDs driven by MC 14511...It
maybe that yours are not the same, but if they look at all similar send me
another message and I will scan the display card circuit as a guide for you.
Best Wishes de Alan G3NYK
----- Original Message -----
From: "Dexter McIntyre W4DEX" <[email protected]>
To: "RSGB LF" <[email protected]>
Sent: 14 August 2005 01:37
Subject: LF: W&G AT-611 display trouble
I recently acquired a Wandel Goltermann AT-611 SLM. It appears to work
fine but the center two segments of the six digit frequency display
don't illuminate. I guess this is a gas type display that requires a
hundred volts or so to operate. Is there anyone on this group familiar
with this SML and this trouble? Which is the most likely problem the
display or the driver circuit?
Thanks,
Dex
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