Had a similar problem and it was a bad tranisitor.
Don't have manual in front me now, so cannot remeber exact details. But
I would suggest checking the voltages on the transistors on the Control
board, there should be a list of voltages in the manual.
Ronnie Davis wrote:
> Hello
> I have a 509 that has all the sudden developed a putt
> putt motor boat sound? Nothing at all is coming out
> for audio except this straight putt putt sound. I
> shipped the radio in very good condition but when the
> buyer got it, it was making this noise, I guess
> something happened in shipment. I have checked the ps
> and even used it on a battery and nothing changes the
> noise. I have used different cables and still nothing?
> When changing the mode switch the sound changes freq
> but it is still there. Please anyone give me some
> help.
> Thanks
> Ronnie
>
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Anthony A. Luscre
K8ZT
Stow, Ohio
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Visit My Website at
http://www.qsl.net/k8zt
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