[1000mp] one last request for suggestions

[Jim Callow]

I have a friend with a radio that does exactly the same thing.  It ususally 
takes a few hours of contesting to make it happen. I had it open several 
times, and have been through the reseating thing, and it always came back to 
life before I could track down the problem. It definitely does not seem to 
be an issue with any of the RF connections. I believe it's connected to the 
VFO A synthesizer.  I talked to the owner Sunday, and it's become enough of 
a problem now that he's sending it in to Yaesu, too.

73
Jim
K8IR

----- Original Message ----- 
From: "FireBrick" <w9ol at billnjudy.com>
To: "FT1000MP List" <1000mp at mailman.qth.net>
Sent: Thursday, December 07, 2006 7:17 AM
Subject: [1000mp] one last request for suggestions


> Before I ship it off to Yaesu never never land.
>
> It's been acting flaky.
> It quits receiving on vfo A
> It's like the squelch was active, but it isn't that
> All knobs, normal operation, it will just start to go in/out and then goes 
> out.
> VFO B can receive normally (at least now)
> I'm listening to a strong 40 meter cw on vfo b but hear absolutely nothing 
> on vfo a.
>
> I can't transmit on either vfo, if cw, rig goes into transmit mode, I hear 
> no sidetone and no power output although the ptt does switch into transmit 
> mode.
>
> This happens in any filter position
> any mode
> any band
>
> If I turn vfo a af gain all the way up, I hear just soft background noise 
> from speakers or headphones, on either left or right headphone.
>
> Occasionally hear a pop, like radio is coming back to life.
> As if some component was just on the edge of adjustment.
>
> As I right this, it's out, the longest down time I've experienced
> Most were a second up to 10 seconds.
> This time it's been a half hour so far, with two moments when it started 
> to come back to life.
>
> because I don't hear a cw sidetone, and no receive on vfo a, can anyone 
> make a suggestion of where to hit with the hammer before sending off for 
> repairs.
> I'm pulling the rig out of use and will open to reseat all boards AGAIN.
> (last week I did that and also made sure all fans, sinks were clean which 
> I do quite frequently)
>
> And just this second, vfo A popped back to life as I was preparing to 
> disconnect all cables and attempt to reseat boards again.
>
>
> I don't have a scope or any other test equipment other than a DVM.
>
>
>
>
>
>
>
>
>
> -----------------------------------------------------
> When your mind goes blank, don't forget to turn off the sound!
> -----------------------------------------------------
>
> Bill H. in Chicagoland
> webcams at http://24.14.49.4:8080
> weather at http://hhweather.webhop.org
>
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