FT-1000D No sound

[N2UNL]

I have the Yaesu FT-1000D. There is no audio out through the external speaker jack or the internal speaker. The headphone jack works well as the stereo line out jack work as it should. No other problems, Radio works 100% other than the speaker jack and the internal speaker doesn't work at all. Any ideas? Thank You in advance.. Brian

[N3OX]

"Any ideas?"

Give it to me 'cause I only use headphones?

:-)

Seriously though, sounds like a blown final audio amplifier stage to me.  I don't know anything about the FT-1000D but I bet if you find a schematic and work backwards from the speaker, the first (or maybe 2nd or 3rd) active device you find has given up the ghost..

If I had to guess, you're gonna want one of these:

http://www.mouser.com/Search/Refine.aspx?Keyword=511-TDA2003V

I got the manual from here:

http://www.dxspot.com/transceivers/yaesu/ft-1000d.html

No idea if it's even the right manual or not ... but if you trust it ;-)

Here's some info that suggests maybe someone has had a problem with damaged regulators (the transistors near the chip) taking out the audio chip:

http://lists.contesting.com/pipermail/yaesu/2002-December/004128.html

You're looking for Q3022 and associated components in the schematic I think.

Could be something else, but that's where I'd start poking around.

73
Dan

[ZS5WC]

I would take a flyer and say the external speaker jack changeover contact is faulty.
William
ZS4L / ZS5WC