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Posted by Frank on 08/09/07 22:01
On Thu, 09 Aug 2007 15:36:15 -0400, in 'rec.video.desktop',
in article <Re: Question about ghosting in a video mixer>,
dh@. wrote:
>On Mon, 30 Jul 2007 15:40:24 -0700, Gene E. Bloch <spamfree@nobody.invalid> wrote:
>
>>On 7/30/2007, hanuman@dot. posted this:
>>> We have a Panasonic WJ-MX20 video mixer that is ghosting
>>> between A and B. When the slider is moved to one position
>>> or the other there will be faint ghosting at first that will continue
>>> to increase until it looks like a cross-fade between the two.
>>> Moving the slider slightly and in the right way reduces the
>>> ghosting again. Can the problem be corrected by changing
>>> out the slider, and if so where could we get one?
>>>
>>> Thanks for any help!
>>> David
>>
>>If the slider is a standard potentiometer, you might be able to buy one
>>ant any big electronics supplier.
>>
>>If you don't want to disassemble the unit to find out what the
>>component is, maybe you can find a repair manual at Panasonic to help
>>you.
>>
>>I would worry that the problem is in a different circuit component
>>connected to the slider, such as a capacitor or transistor, whose
>>misbehavior is the actual cause of the bad behavior. If you can find an
>>appropriate slider, changing it out might help to answer that question
>>;-)
>
> Last week we took it apart and I cleaned the pot with fader
>cleaner. A bunch of dirty crap came out of it. Unfortunately my
>boss was there and took control, closing it up again before I
>got to look for numbers. I didn't even get to finish cleaning the
>pot good, but what I did made a huge improvement so maybe
>that is the problem. I need to take it apart again when he's
>not around, so I can take my time instead of rushing though
>as he likes to do. I've emailed Panasonic several times trying
>to get them to sell me a pot and the handle that fits on it, but
>so far they haven't responded at all.
Well, it's good to know that Panasonic isn't any better than JVC at
responding to e-mailed messages. :)
Have you tried Panasonic's online parts ordering Web site? They list
parts for the WJ-MX20.
Parts Ordering
http://www.pasc.panasonic.com/EpartR/PartsListChoice.asp
--
Frank, Independent Consultant, New York, NY
[Please remove 'nojunkmail.' from address to reply via e-mail.]
Read Frank's thoughts on HDV at http://www.humanvalues.net/hdv/
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