Mitsubishi Diamond Pro 930SB Monitor, twitchy vertical deflection

[[email protected]]

Hi, I've got a Mitsubishi Diamond Pro 930SB 19" computer Monitor
that's been working great for about 2 years, but has started getting a
twitch or two in it's vertical deflection after 10 or 12 hours on.

Flat lined once on me. Toggling power saving mode for a few seconds
usually clears it up for the short term. I've stopped using it with a
screen saver and have gone to the power saving mode when I'm not using
it to give it a rest and cool down.

Google confirmed a couple of other people have had the same problem
but didn't yield the real issue or fix. Hell of a high performance
monitor for ~$300, but I guess the parts were just a bit too cheap.

Wondering if anyone is familiar with the problem.

TIA

 

[JANA]

You would have to go through all the capacitors in the power supply and
vertical deflection circuits with an ESR meter. More than likely you will
find a number of capacitors that have become high in ESR with use. This was
very common on many of these monitors.

Since there are serious safety issues when working in monitors, if you are
not properly trained and equipped to do monitor service work, you should
give the monitor out to a service centre for an estimate.

Considering the quality of the new LCD monitors that are in the same price
range that you paid for your Mits monitor, it may be a better preference to
upgrade to a descent LCD screen. There are many advantages of the LCD
technology over the CRT technology.

--

JANA
_____



Hi, I've got a Mitsubishi Diamond Pro 930SB 19" computer Monitor
that's been working great for about 2 years, but has started getting a
twitch or two in it's vertical deflection after 10 or 12 hours on.

Flat lined once on me. Toggling power saving mode for a few seconds
usually clears it up for the short term. I've stopped using it with a
screen saver and have gone to the power saving mode when I'm not using
it to give it a rest and cool down.

Google confirmed a couple of other people have had the same problem
but didn't yield the real issue or fix. Hell of a high performance
monitor for ~$300, but I guess the parts were just a bit too cheap.

Wondering if anyone is familiar with the problem.

TIA

 

[[email protected]]

You would have to go through all the capacitors in the power supply and
vertical deflection circuits with an ESR meter. More than likely you will
find a number of capacitors that have become high in ESR with use. This was
very common on many of these monitors.

Since there are serious safety issues when working in monitors, if you are
not properly trained and equipped to do monitor service work, you should
give the monitor out to a service centre for an estimate.

Considering the quality of the new LCD monitors that are in the same price
range that you paid for your Mits monitor, it may be a better preference to
upgrade to a descent LCD screen. There are many advantages of the LCD
technology over the CRT technology.

bummer. I've been hearing about the low quality caps for a while now.
That would explain why google posters mention they sent theirs off for
warranty service and it didn't get repaired. Pity.

Yeah I've got a LCD HDTV (a sweet 40 lbs or so), but I like being able
to change resolution on CRT monitors, which is one rather large
problem with LCD displays. Colors are nice too. Ideally I'd like a
32-42" 1080P LCD with a strobed LED backlight and a CAD quality 20+"
CRT combo for my desktop.

Oh well I guess I'll invest in the shop manual and browse around
inside with a hair dryer.

Any recommendations on a place to buy good Caps ?