Hi guys.

I'm the generally positive owner of a Sony
GDM-F520 monitor. Unfortunately the Triniton series
often develop problems with the brightness being to high and the
focus/contrast becomes a problem.

I've found post that tells about a possible fix:

http://www.hutzelman.com/home/hardware/mods/monitor/

(the link is down right now, but it describes a resistor called "R459"
that it's easy to replace with another one with a higher 4.7-6.8
MOhm)

Unfortunately none of them were specifically ment for my F520. I've
opened up and it doesn't appear like the one in the turorial and no
"R459" resistor. I've checked the monitor's technical manual for that
too, and it doesnt have a resistor with that name. I've even mailed
Hutzelman, but he didn't know either.

So, not being an electronic wiz at all, I would be exited if anyone
around here has any relevant experience regarding this monitor's
problem.

Best regards

Eric

On Wed, 07 Sep 2005 11:36:35 -0500,
lid (Eric_Streame) wrote:

Hi guys.

I'm the generally positive owner of a Sony
GDM-F520 monitor. Unfortunately the Triniton series
often develop problems with the brightness being to high and the
focus/contrast becomes a problem.

I've found post that tells about a possible fix:

http://www.hutzelman.com/home/hardware/mods/monitor/

(the link is down right now, but it describes a resistor called "R459"
that it's easy to replace with another one with a higher 4.7-6.8
MOhm)

Unfortunately none of them were specifically ment for my F520. I've
opened up and it doesn't appear like the one in the turorial and no
"R459" resistor. I've checked the monitor's technical manual for that
too, and it doesnt have a resistor with that name. I've even mailed
Hutzelman, but he didn't know either.

So, not being an electronic wiz at all, I would be exited if anyone
around here has any relevant experience regarding this monitor's
problem.

Best regards

Eric


The resitor to change is R941 on the mainboard. See here
http://www.network54.com/Forum/search?forumid=87612

Wayne

On Wed, 07 Sep 2005 11:36:35 -0500,
lid (Eric_Streame) wrote:

So, not being an electronic wiz at all, I would be exited if anyone
around here has any relevant experience regarding this monitor's
problem.

Best regards

Eric


Have you tried running to 'color return' function in the menu? It
fixes the brightness problem on some of the more recent sony monitors.
I think the F520 is new enough for this to work.

If not, I have a pdf of the service manual I could send you.
Andy Cuffe

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