Apex volume plateau

[Smith]

My son's Apex TV volume increases incrementally to an approximate midpoint
on the volume scale. However, any further on-screen increase on the volume
bars doesn't affect the actual volume. Would appreciate any suggestions.

Eric

 

[TCS]

On Mon, 24 May 2004 16:43:52 -0600, Smith <smithdelta@gwe.net> wrote:

My son's Apex TV volume increases incrementally to an approximate midpoint
on the volume scale. However, any further on-screen increase on the volume
bars doesn't affect the actual volume. Would appreciate any suggestions.

MSB of volume level D/A isn't working.

 

[Smith]

Thanks! This newsgroup is amazing. I have fixed a VCR and a TV from advice
on this group, and I'm an amateur. This time I don't know the terms MSB and
D/A. MSB is minimum sideband? D/A is what? And is there any hope to
replace a component or tweak a pot, or is this something for an
oscilloscope....

Please spoonfeed me, with my gratitude once again.

Eric


"TCS" <The-Central-Scrutinizer@p.o.b.o.x.com> wrote in message
news:slrncb50l7.9nt.The-Central-Scrutinizer@linux.client.comcast.net...
On Mon, 24 May 2004 16:43:52 -0600, Smith <smithdelta@gwe.net> wrote:

My son's Apex TV volume increases incrementally to an approximate midpoint
on the volume scale. However, any further on-screen increase on the volume
bars doesn't affect the actual volume. Would appreciate any suggestions.

MSB of volume level D/A isn't working.

 

[TCS]

On Mon, 24 May 2004 18:19:05 -0600, Smith <smithdelta@gwe.net> wrote:

Thanks! This newsgroup is amazing. I have fixed a VCR and a TV from advice
on this group, and I'm an amateur. This time I don't know the terms MSB and
D/A. MSB is minimum sideband? D/A is what? And is there any hope to
replace a component or tweak a pot, or is this something for an
oscilloscope....

MSB == most signifigant bit
D/A is a digital to analog convertor.

Unless you have a schematic and can desolder surface mount components, I don't
think you're going to be able to trouble shoot down to the component level.

If I had the thing, I'd connect a VCR to a stereo amp and use the TV only as
a display device.

 

[Smith]

Thank you. Astoundingly detailed and helpful. I have gone to the board
level before, but the TV is in California, I'm in Colorado, and you're
probably in the South Pacific...which means we'll be informed but tolerant.
Thanks a million. I'll recommend the stereo bypass. Great idea. Good
evening. -ES

"TCS" <The-Central-Scrutinizer@p.o.b.o.x.com> wrote in message
news:slrncb58m3.h8v.The-Central-Scrutinizer@linux.client.comcast.net...
On Mon, 24 May 2004 18:19:05 -0600, Smith <smithdelta@gwe.net> wrote:

Thanks! This newsgroup is amazing. I have fixed a VCR and a TV from
advice
on this group, and I'm an amateur. This time I don't know the terms MSB
and
D/A. MSB is minimum sideband? D/A is what? And is there any hope to
replace a component or tweak a pot, or is this something for an
oscilloscope....

MSB == most signifigant bit
D/A is a digital to analog convertor.

Unless you have a schematic and can desolder surface mount components, I
don't
think you're going to be able to trouble shoot down to the component level.

If I had the thing, I'd connect a VCR to a stereo amp and use the TV only as
a display device.

 

[Asimov]

"Smith" bravely wrote to "All" (24 May 04 18:19:05)
--- on the heady topic of "Re: Apex volume plateau"

MSB = Most Significant Bit
D/A = Digital to Analog converter often called a DAC, opposite is ADC.

Basically, the volume IC (D/A) is not receiving the highest weighted
bit (MSB) from the rotary encoder (pot). This may be due to a bad PCB
connection, cold solder joint, or a cracked trace, but perhaps a
defective LSI alas. Good luck.


Sm> From: "Smith" <smithdelta@gwe.net>

Sm> Thanks! This newsgroup is amazing. I have fixed a VCR and a TV from
Sm> advice on this group, and I'm an amateur. This time I don't know the
Sm> terms MSB and D/A. MSB is minimum sideband? D/A is what? And is
Sm> there any hope to replace a component or tweak a pot, or is this
Sm> something for an oscilloscope....

Sm> Please spoonfeed me, with my gratitude once again.

Sm> Eric

Sm> "TCS" <The-Central-Scrutinizer@p.o.b.o.x.com> wrote in message
Sm> news:slrncb50l7.9nt.The-Central-Scrutinizer@linux.client.comcast.net...
Sm> On Mon, 24 May 2004 16:43:52 -0600, Smith <smithdelta@gwe.net> wrote:

My son's Apex TV volume increases incrementally to an approximate midpoint >on
Sm> the volume scale. However, any further on-screen increase on the

Sm> volume >bars doesn't affect the actual volume. Would appreciate any suggestions.


Sm> MSB of volume level D/A isn't working.


.... Digital circuits are made from analog parts.