Cobra 2000 GTL -- headphone jack connections?

[GTC]

I'm working my way through a resto on a GTL. Although there's a headphone jack in situ, there are no connections to it and there are no disconnected wires hanging around either. I've checked out the schematic and it appears there should be a PCB labelled PC-480 from which the headphone connections are wired -- but I don't see any such PCB.

The socket in place does not strike me as being original, so I'm guessing maybe a previous owner had repurposed the headphone jack hole for some other "feature".

Does anyone have a good photo of the underside of a GTL showing the headphone connections?

 

[999]

This pic is in the service manual.
http://www.cbtricks.com/radios/cobra/2000gtl/graphics/cobra_2000gtl_sm.pdf

 

[999]

 

[GTC]

Many thanks for that. So it seems the original board has been removed.

 

[nomadradio]

Odds are you'll find a blue and a yellow wire that used to go to the headphone jack, soldered (you hope) to each other.

Pretty sure I'm remembering the bypass trick you use if the jack goes bad.......

73

 

[GTC]

Odds are you'll find a blue and a yellow wire that used to go to the headphone jack, soldered (you hope) to each other.

Pretty sure I'm remembering the bypass trick you use if the jack goes bad.......

73

I haven't found any wires like that. Looks to me that the hacker has cleaned up behind himself.

Now that I have an idea of what it looked like, I may be able to make one myself on a piece of prototyping board ... unless I can find someone parting out a GTL.

Update: I've managed to get a look at the Sams Photofact for this radio and it gives the wire colors as: Yellow from S407 (PA/CB) to L411 on PC-480; Blue from S404 (speaker select) to L412 on the PC-480 and Red from the junction of R416 & R417 on PC-480 to the junction of L417 & L418 on PC-479 (the 'other output jacks' board).

 

[999]

View attachment 43621

I haven't found any wires like that. Looks to me that the hacker has cleaned up behind himself.

Now that I have an idea of what it looked like, I may be able to make one myself on a piece of prototyping board ... unless I can find someone parting out a GTL.

Update: I've managed to get a look at the Sams Photofact for this radio and it gives the wire colors as: Yellow from S407 (PA/CB) to L411 on PC-480; Blue from S404 (speaker select) to L412 on the PC-480 and Red from the junction of R416 & R417 on PC-480 to the junction of L417 & L418 on PC-479 (the 'other output jacks' board).

It was also in my previous post quoted above.
It's all in the service manual link I posted. That service manual is one of the most detailed ones that I have seen.
Here it is again for you.
http://www.cbtricks.com/radios/cobra/2000gtl/graphics/cobra_2000gtl_sm.pdf

 

[GTC]

Thanks 999.