[Boatanchors] Re: GB> Fw: TS 530 SP problems

[N2EY at aol.com]

In a message dated 5/31/07 3:07:40 AM Eastern Daylight Time, 
w4bws at comcast.net writes:


> I have a TS 530SP which suddenly, after carrying it 
> from the shack to a friends house, has no output. 
> The loading cap does nothing. I can dip the final, get 
> grid drive, and the loading cap does not increase 
> output. The RF position shown a slight reading at 
> max sensitivity. I have replaced the finals with a new 
> set (they could be bad??- not likely.). The antenna 
> relay keys properly and shows continuity to the loading 
> cap, sections switch in properly with the band switch-
> verified by continuity test.
> Receiver works fine. Anyone have an idea what could be wrong.
> 

It sounds to me like something at the output side of the pi network is 
shorted. MAybe the loading capacitor, maybe one of the additional capacitors across 
it, maybe something in the switch. 

There is usually a "safety choke" across the output, which will indicate a DC 
short. This choke is used so there is no DC on the pi-net, only RF. 

73 de Jim, N2EY




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