On Mar 24, 12:05�pm, wrote:
On 24 Mar 2007 09:00:52 -0700, "Dloyd Lavies"
wrote:





On Mar 24, 11:45?am, "bob.martin" wrote:
Dear All,

My kenwood TL922 has developed a strange fault. *hen I switch it on (via an
Ameritron Soft Start module) I get a negative reading on the Ig meter
of -50mA and a positive reading of around +100mA on the Ip meter with no key
down.

Keying the amp has no effect and the relay does not energise. * have
checked the ALC and relay connectors and the coaxial cables

I've tried starting it directly bypassing the soft start box and this has
made no difference. *Obviously I do not leave it on for more than a few
seconds as there is clearly a fault. * *have had the covers off and can see
nothing untoward in terms of burnt components and there is no burning smell
and the fuses don't blow.

lso both valves (3-500zs) light up.

Any suggestions as to what may be up before a trip over to Castle, has
anyone else seen similar

thanks

Jim G7NKS

that was certainly an insightfull reply Dloydhttp://kb9rqz.blogspot.com/

Mark, Your desperate pathetic plea for attention is not granted.
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Jim, I agree with Antonio's diagnosis of a shorted tube. However, you
can also post at http://groups.yahoo.com/group/ham_amplifiers/

The Yahoo amps board is a good place to ask for info about improvement
mods for the TL 922.

Dloyd