[Yaesu] FT450 loss of receive

Wed Jan 26 19:49:16 EST 2011

You need a can of freeze-mist for cooling and a hair dryer for heating. 
Likely a solder connection got missed and as the parts warp a couple 
millionths of an inch contact is lost. The transient of turning off and 
back on arcs over the tiny gap and it works. Could be inside an IC or 
transistor too.
73, Jerry, K0CQ
On 1/26/2011 6:24 PM, John Geiger wrote:
> I have a fairly new Yaesu FT450 that has a very intermittant problem. Once
> in a while, when it has been on for a while but unused (just sitting
> receiving) the receive level will drop down. It is almost like the AGC gets
> stuck after hearing a loud signal or so. It happened twice right after I
> got the rig, about 1 week apart and then last night after not showing this
> problem for over a month. When it occured last night I went to transmit at
> full power and the rig turned off. When I turned the rig back on it was
> receiving fine (I didn't know the receive was down until this happened, I
> just thought the band was quiet). In the past turning the rig off and then
> on has fixed it as well.
>> I bought this new in November so it has 10 months left on the warranty, but
> I kind of hate blindly sending it the Yaesu as they will probably be unable
> to reproduce the problem. I wonder if anyone else has had this problem and
> know what causes it or where to look for a solution.
>> 73s John AA5JG
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