Help wanted

[Edward B Richards]

Curt;
I Am 67 years old and I still work (sometimes) and have had some
experience repairing VTVM's. Look for a wiring error or a heater-cathode
short in the 12AU7 putting AC into the circuit. By all means, try new
tubes.
You should be able to get the pots from an electronics store or any of
the mail order companies i.e. Newark, Tech-America, Surplus sales of
Nebraska, MCM, Mouser, etc.  Get linear taper pots not audio taper.
If you have the schematic and want to send them both to me I will repair
it for you for expenses only.
Regards,   Ed Richards


On Fri, 15 Jan 1999 07:52:06 -0500 curt parrish <cparrish at ATLANTIC.NET>
writes:
>Hello All:
>
>My Heathkit IM-11 VTVM has some problems.  I don't understand why it
>doesn't work, it's only 35 years old!
>
>When first turned on, the meter tends to slam from one stop to the
>other,
>and when it settles down, the needle vibrates.  The filter cap and
>rectifier appear to be okay.  Also need the 10-78 15K pots that mount
>on
>the front panel (OHMS ADJ and ZERO ADJ).  It may also needs new tubes,
>a
>6AL5 and a 12AU7.  If you have some ideas, they would be appreciated.
>
>Thanks, Curt, K4TL
>
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