[Kenwood] TS-140S high current question RESOLVED!

[Roger Shultz]

Please disregard, it was not D6 rather the PA transistors are bad. I pulled
L14 and the current dropped to 1 amp on receive. I have drive to the Pa so
off to find replacements!

73, Roger, NJ2R

-----Original Message-----
From: kenwood-bounces at mailman.qth.net
[mailto:kenwood-bounces at mailman.qth.net] On Behalf Of Roger Shultz
Sent: Wednesday, July 13, 2011 8:45 PM
To: kenwood at mailman.qth.net
Subject: [Kenwood] TS-140S high current question

I'm working on an unknown TS-140S that when plugged in is drawing 20 amps
and pulling the voltage down on my supply.

Of course this is not right and I'm suspecting D-6 the large reverse power
protection diode as being bad. Removing it to test is going to be a real
"bear" as it is heavily soldered all the way around to the board. 

What will help me make this decision or not is to find out what resistance
others read from the +side of the power plug to ground. In my case it is
about 700 ohms both ways suggesting a nearly shorted diode. 

Thanks for any guidance provided!

73, Roger, NJ2R

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