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PowerBook 170 - dead speaker after taking it apart

3lectr1cPPC

Well-known member
I had my 170 apart today to take the hard drive out to test something in another computer. When I got it back together I suddenly have no sound through the speaker. I don't remember for sure, but I'm pretty certain I did power it up today during the part shuffle with it working.

Here's what I've tried:
- Reseating the interconnect cable (multiple times)
- Sound comes through headphones, so I know it's not the sound hardware
- OS volume is on
- Visually inspected the speaker connections and everything looks fine. No obvious damage or bent pins on anything
- I also reseated the processor card and RAM for good measure.

Any ideas on what's wrong, or just how I can test the speaker with my multimeter?

Thanks,
3lectr1c

Edit: Just remembered this (cross-post from TD)
To be clear, the speaker has been working ever since I got it. It only quit after a recent disassembly, although now that I think of that I did just remember something...

When I was putting it back together, I didn't get the interconnect cable seated correctly the first time around. This led to an audio feedback sound (buzzing) from the speaker. Then I reseated it, and now the display and everything else work, but not the speaker. Maybe that killed it :(

So yeah, how do you test a speaker with a multimeter? 😅 😅
 
Last edited:

Aektann

Well-known member
Check out the ribbon cable between the top and bottom cases. It is known to be degraded by the time
 

3lectr1cPPC

Well-known member
How would I check the cable? Seems odd that only the speaker would have problems, the display works perfectly along with the keyboard and trackball.

thanks @joshc
 
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