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Pin cushion failure Viewsonic 21 (glass) monitor

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root

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Jul 4, 2009, 6:52:13 AM7/4/09
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The pincushion/hourglass control circuit just failed in my
Viewsonic 21 monitor. If anyone can suggest a fix I may
be able to rescue the monitor from the recycling bin.

TIA.

whit3rd

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Jul 5, 2009, 6:16:16 PM7/5/09
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It'll still be a big CRT monitor, and generate heat/suck power,
but the pincushion circuit is just a low-volt amplifier in these
machines; probably the coupling capacitor near "pin amp"
markings on the main circuit board is in need of replacement.

stra...@yahoo.com

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Jul 6, 2009, 12:48:56 AM7/6/09
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Capacitor failures (mostly dried out 'lytics) tend to be more gradual
than a sudden change. It's certainly worth checking the caps but keep
an open mind about other possibilites.


root

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Jul 6, 2009, 1:28:48 AM7/6/09
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> G�

I've already replaced the monitor with an LCD. The failure took
about 10 minutes, from twitching to waviness to finally a total
hourglass shape.

Thanks for responding.

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