[Amps] LK-800A

[John Coleman, ARS WA5BXO]

Thanks for looking guys.  The Bama site schematic is what I have and it
doesn't detail the 180 sec timer circuit and Omega wants us to send it
in for repair.  I guess I'll try reverse engineering a diagram of it and
then troubleshoot the thing.  I hate "shotgunning" parts in something
that needs a small .25 watt resistor.  It is so easy to burn a circuit
board or destroy a good part and still not fix the trouble.  I have a
feeling there were several version of this thing.  

Thanks again

John, WA5BXO
http://www.qsl.net/wa5bxo
  


-----Original Message-----
From: Floyd Sense [mailto:fsense at copper.net] 
Sent: Wednesday, January 12, 2005 9:29 PM
To: Barrie Smith; John Coleman, ARS WA5BXO; amps at contesting.com
Subject: Re: [Amps] LK-800A

It's Omega Electronics.  Here's the link to their home page: 
http://www.omega-electronics.com/

73, Floyd - K8AC in NC

----- Original Message ----- 
From: "Barrie Smith" <barrie at centric.net>
To: "John Coleman, ARS WA5BXO" <wa5bxo at pctechref.com>;
<amps at contesting.com>
Sent: Wednesday, January 12, 2005 10:11 PM
Subject: Re: [Amps] LK-800A


> Sorry I don't have exact details, but . . . a fellow named Bill has an

> amplifier repair company named "Alpha", something.
>
> It's in 4-land.
>
> Bill was production manager for Amp Supply/International Amp when the 
> LK-800X was being built.
>
> Google should find the company.
>
> Good luck,
>
> Barrie, W7ALW
> ----- Original Message ----- 
> From: "John Coleman, ARS WA5BXO" <wa5bxo at pctechref.com>
> To: <amps at contesting.com>
> Sent: Wednesday, January 12, 2005 7:37 PM
> Subject: [Amps] LK-800A
>
>
>> Does any one know about a LK-800A by Amp Supply.  It has 3 forced air
>> cooled 800 watt plate dissipation, ceramic tubes, I think.  It has
some
>> sort of a delay circuit to keep idiots from applying drive before the
>> heaters or up to temp.  This circuit has failed and now it doesn't
ever
>> allow keying.  On the only schematic we have, there are no details
about
>> the timer delay circuit.  It has a 555 timer and some other relays on
a
>> small circuit board.  I'm hoping some one here has the needed info,
else
>> I have to reverse engineer the thing and will probably disable the
>> stupid timer.
>>
>> John, WA5BXO
>>
>>
>>
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>
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