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Author Topic: wg4600 no control over brightness....  (Read 1477 times)

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cw

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wg4600 no control over brightness....
« on: May 17, 2007, 02:51:53 pm »
subject line says it all...
 

 
 pulled and check the pot on the neck pcb
 checked r 419 and r 418




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Ken Layton

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Re: wg4600 no control over brightness....
« Reply #1 on: May 18, 2007, 12:22:30 am »
The SCREEN pot on the neckboard rarely goes bad. It's the pot on the video interface board ("Black Level Control") that goes bad all the time.
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cw

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Re: wg4600 no control over brightness....
« Reply #2 on: May 18, 2007, 03:18:21 pm »
pot was replaced with the cap kit...
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Ken Layton

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Re: wg4600 no control over brightness....
« Reply #3 on: May 18, 2007, 07:27:09 pm »
And you adjusted the black level control?

Did you resolder all the bad solder joints on the monitor main board and the daughter boards?

Did you swap the video interface board with one from another 4600 series monitor to isolate the problem to that board?
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cw

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Re: wg4600 no control over brightness....
« Reply #4 on: May 18, 2007, 09:25:34 pm »
yes


yes


yes


thanks for the help ken.... this one is driving me nuts
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