[1000mp] High SWR metering w/ FT-1000D

[Red, K1DEU]

Does this FT1000 Page apply to your situation ? Down at the bottom "
Repairing your own  lightning blown FT-1000 MP "


http://www.hamelectronics.com/k1deu/pages/ham/projects/ft-1k/ft-1k_index.html

Harrison Thomas wrote:
> 
> Here's the problem:
> Panel meter on FT-1000D shows high SWR with the power contol turned
> all the way down. No difference with the tuner in or out. When the
> power control is turned up, The SWR meter pegs.
> 
> With a Bird watt meter inserted into the following places no SWR is
> detected:
> (1) J7201 input to the LP Filter board
> (2) J7207 output of the LP filter board
> (3) Between the antenna jack and an external dummy  load.
> 
> The Protection Unit board cuts the output power back to just a few
> watts.
> DC voltage measured at J7204, output  of the LPF board shows
> reflected voltage is higher than the forward voltage.
> 
> With the plugs removed from jacks J7203 and J7204 of the LPF Unit,
> the output power into the dummy load comes back up to the rated power
> of the FT1000-D with no SWR. (But, of course, there is no meter
> reading of power and SWR on the panel meter.)
> 
> Diodes D7202 and D7204 were changed but the problem remains.
> Has anyone on the list been through this one before?
> Regards,
> Tom
> vq9wb
> Diego Garcia
> 
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