Video flicker

2013-01-19 Thread JohnV

G5 Dual 1.8G
10.4.11
GeForce FX 5200

2 monitors
Westinghouse CMC17 1280x1024
DELL E207WFP   1680x1050

These 2 monitors played-nice for months,  then the CMC-17 suddenly  
developed  a flickering series of maybe 10 horizontal bands that  
slowly move down the screen.
They are not apparent at all with absolute white or absolute black  
areas, the more mid-grey  things get in an image, the worse the  
flicker appears.

The DELL still looks perfect.
This happened when I disconnected everything from the machine to  
install a larger second hard drive and then reconnected and fired it  
back up.


Where should I be looking for if it's the machine, the card, a cable  
or the monitor?


thanks
John V

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Re: Video flicker

2013-01-19 Thread Kris Tilford

On Jan 19, 2013, at 12:02 PM, JohnV wrote:

Where should I be looking for if it's the machine, the card, a cable  
or the monitor?


Switch the monitors to each other's video port and see if the bands  
stay with the same monitor or stay with the same video port.


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Re: Video flicker

2013-01-19 Thread Valter Prahlad
Il giorno 19/01/13 20:34, Kris Tilford ha scritto:

 Switch the monitors to each other's video port and see if the bands
 stay with the same monitor or stay with the same video port.

... and switch the video cables too, to test them as well.


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Re: Video flicker

2013-01-19 Thread JohnV

flicker stays with the Westinghouse monitor


On Jan 19, 2013, at 2:34 PM, Kris Tilford wrote:


On Jan 19, 2013, at 12:02 PM, JohnV wrote:

Where should I be looking for if it's the machine, the card, a  
cable or the monitor?


Switch the monitors to each other's video port and see if the bands  
stay with the same monitor or stay with the same video port.


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group for those using G3, G4, and G5 desktop Macs - with a  
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Re: Video flicker

2013-01-19 Thread JohnV

OK, this will take some  wrangling... a day or two to get at it.

Swap the port connections at the back of the G5
observe, then
Swap the cables where they go into each monitor
observe

will do

On Jan 19, 2013, at 2:56 PM, Valter Prahlad wrote:


Il giorno 19/01/13 20:34, Kris Tilford ha scritto:


Switch the monitors to each other's video port and see if the bands
stay with the same monitor or stay with the same video port.


... and switch the video cables too, to test them as well.


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Re: Video flicker

2013-01-19 Thread W.Adrian D'Alessio
A Viewsonic here has problems with an external power supply. It works well
when a replacement is plugged in.



On Sat, Jan 19, 2013 at 5:14 PM, W.Adrian D'Alessio
fluxstrin...@gmail.comwrote:

 If you have no toher cables to try get  rubbing alcohol or contact
 cleaner, an old tooth brush with power disconnected  scrub  the cable ends
 and all ports,  briskly and completely.  Look for loose or broken pins. Bad
 cable insulation etc.

 The starting point for  repair should always be the obvious elements. And
 this gets them out of the way if it is something more complex causing the
 failure. I have  had many great monitors that people thought were  totally
 wasted  brought to life with a simple cleaning.

 On Sat, Jan 19, 2013 at 3:12 PM, JohnV vengbj...@verizon.net wrote:

 OK, this will take some  wrangling... a day or two to get at it.

 Swap the port connections at the back of the G5
 observe, then
 Swap the cables where they go into each monitor
 observe

 will do


 On Jan 19, 2013, at 2:56 PM, Valter Prahlad wrote:

  Il giorno 19/01/13 20:34, Kris Tilford ha scritto:

  Switch the monitors to each other's video port and see if the bands
 stay with the same monitor or stay with the same video port.


 ... and switch the video cables too, to test them as well.


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Twitter on a G4 or a G5

2013-01-19 Thread smac0031
It unfortunately has come to this. It looks like I need to join Twitter. I 
have a DA G4 with 10.411 or a G5 10.5 whatever. What do i need to run 
Twitter by spending the least amount of money possible.
Thanks,
Mark Murphy

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Re: Video flicker

2013-01-19 Thread Doug McNutt
At 17:16 -0500 1/19/13, W.Adrian D'Alessio wrote:
A Viewsonic here has problems with an external power supply. It works well 
when a replacement is plugged in.


In the good old days of cathode ray tubes rolling bands were almost always due 
to an interference. the AC power's 60 Hz, with harmonics, and the 15 or so kHz 
horizontal would get harmonically linked to create the bands.  They moved 
because the frequencies were nearly , but not exactly, the same.

That's not precisely your problem with modern digital monitors but you did 
alter the load on the power supply when you installed the new disk.  If the 
supply is now overloaded or is exercising its capacitors a little harder now 
it's possible that the result could be some rolling interference.

Can you turn off the new disk while still having something to look at? Or is it 
a replacement in a single disk box?
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Re: Twitter on a G4 or a G5

2013-01-19 Thread John Laughlin
Firefox 3.6.28 works fine...

On Jan 19, 2013, at 15:11, smac0031 m.smurph...@gmail.com wrote:

 It unfortunately has come to this. It looks like I need to join Twitter. I 
 have a DA G4 with 10.411 or a G5 10.5 whatever. What do i need to run Twitter 
 by spending the least amount of money possible.
 Thanks,
 Mark Murphy
 -- 
 You received this message because you are a member of G-Group, a group for 
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 Macs.
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Re: Video flicker

2013-01-19 Thread Rock

On 1/19/2013 1:02 PM, JohnV wrote:


These 2 monitors played-nice for months,  then the CMC-17 suddenly 
developed  a flickering series of maybe 10 horizontal bands that 
slowly move down the screen.



This is indicative of filter capacitors going bad in the power supply.

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