[1000mp] strange speaker problem

[w2nra at optonline.net]

Hi Bill,

Try cleaning the speaker plug with a contact cleaner or alcohol and then coat the contact conditioner if you have it.  I occasionally have the problem with the headphone plug.

73
Art
W2NRA

----- Original Message -----
From: FireBrick <w9ol at billnjudy.com>
Date: Thursday, May 12, 2005 7:57 am
Subject: [1000mp] strange speaker problem

> Using a ft1000mp and have a Yaesu SP8 speaker.(that's the version 
> with the built in audio 
> filtering which I never use)
> I don't use the speaker that much preferring earphones on cw and ssb.
> but occasionally use the speaker.
> 
> Here's the problem. When I pull the headphone plug out of the MP, 
> there is no sound coming 
> out of the SP8.
> Not EVERY time, but most of the time.
> But if I turn the audio gain on the MP, it pops back to life, way 
> too loud.
> I can then turn the audio gain on the MP back down to a normal level.
> And sometimes, the sound will quit if I bump the desk.
> Tapping the SP8 case will 'sometimes' bring it back.
> But turning the AF gain on the MP works EVERY time.
> 
> Sort of like a circuit is tuned too close.
> Changing the settings of the SP8 filtering does cause changes in 
> the filtering but does 
> not effect the muted audio until gain reaches some threshold 
> situation.
> I've checked all jacks and wiring for cold solder joints.
> The SP8 is connected to the SPK jack on the back of the MP of 
> course and is disconnected 
> when using headphones.
> 
> So before I try and bypass the audio filter circuit, can anyone 
> make a suggestion.
> 
> 
> -----------------------------------------------------
> Mississippi State Motto: Come And Feel Better About Your Own State
> -----------------------------------------------------
> 
> Bill H. in Chicagoland
> 
> 
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