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Sandy
New Member
USA
4 Posts |
 Posted - Jun 17 2005 : 11:23:35 PM
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It's a BellSouth 1188. I have it open before me & suspect the issue is voltage related versus a bad speaker. When I "pump up the volume", it responds correctly in regards to beeps, but with no audible increase. It's so low, you have to press your ear next to the speaker.
I saw this link: http://www.aaroncake.net/circuits/volume.htm That's the exact keyboard layout I'm looking at (1188 key board rev:0 13-20BY9000 11-Nov-98).
However, since the keyboard responds correctly, I'm looking at the Main Board. The up volume seems to terminate at J26. I can't find where else it would go.
It seems like an increase in resistance somewhere. It's been eons since my electronics courses, so I'm not sure where to go from here.
Would they have a schematic for a cheapie piece of HW like this out there? I saw another person mention an identical issue on a BellSouth speaker phone. Do you all have any input?
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blah
Apprentice
Australia
75 Posts |
Posted - Jun 18 2005 : 03:24:31 AM
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Just work back from the speaker and draw up your own schematic.
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Sandy
New Member
USA
4 Posts |
Posted - Jun 19 2005 : 01:13:51 AM
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quote:
Just work back from the speaker and draw up your own schematic.
Thanks for the reply. Yes, you're right about that.
The bigger question I've had is regarding what part is causing the low volume. I probably should give up & buy another at Goodwill.
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blah
Apprentice
Australia
75 Posts |
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Sandy
New Member
USA
4 Posts |
Posted - Jun 19 2005 : 11:37:53 AM
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quote:
Without any idea what is in front of you it will be difficult for us to just guess the problem, for example, what's a "j26"?
You could try this:
http://img292.echo.cx/img292/4893/answeringmachinesoundfix9dl.jpg
I suppose I could also just buy a hearing aid. :)
I've not studied the electronics end of PCs for 3 years, so I'm pretty rusty.
J26 in a pc would be an example of the possible jumper setting which you can manipulate to increase the voltage (overclock) to create better performance. In a pc, if you have the model # of the board, the jumper stuff is uniform.
I'll probably see if I can buy a used answering machine at the thrift store...They're evidently not meant to be repaired.
Thanks for reply!!
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Sandy
New Member
USA
4 Posts |
Posted - Jun 19 2005 : 11:54:01 AM
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p.s. Your pic link gave me a google search idea...
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Answering Machine-near inaudible volume
