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Samsung 940B, 943B and 940FN reliability issues

We have an installed base of approx 320 Samsung 940B, 943B and 940FN 19 LCD displays. They are all connected via DVI to HP desktop computers in a dual, tri or quad screen configuration. The majority of the displays are less than two years old.

We are experiencing an issue where if the screen is switched off, it doesnt switch back on again. It has so far affected around 50 units in the past year. This issue is under investigation with Samsung and at present they are swapping the faulty units under warranty.

Im not necessarily looking for troubleshooting advice, but more to see if other companies have experienced a similar issue or reliability problems with large installations of Samsung units?

Many thanks
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chrishow
Asked:
chrishow
1 Solution
 
borgunitCommented:
I cannot give a total answer but out of the few of those monitors we have, no issues in the past year. About 5 units.
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PCBONEZCommented:
A wide variety (nearly every brand) of LCD monitor and TV suffer from cheap capacitors in the power supply circuits.

I -KNOW- . BenQ, Samsung, Viewsonic, Akai, Panasonic, Dell, HP/Compaq, Soyo, Acer, Philips, Proview, Hanns-G, Westinghouse, NEC, ELO, Visio, Ilo, Gateway, eMachines, MAG Innovision, Princeton, AOC, Planar, Insignia, and Envision all have such problems for sure.
Probably 90% of those I didn't mention do too.

Many units with BenQ circuit boards have issues with burning out transistors.
Those include [some] Dell, Gateway, HP/Compaq, eMachines, Proview, and possibly others.

The only one I -KNOW- hasn't had any issues with caps or chips is Sony.

I suspect IBM, Toshiba, and maybe Sharp are okay but I haven't actually research them.
- They just don't show up broke in those places one buys broken monitors to fix.

There are several techs at badcaps.net [in the forum] that rebuild LCD screens either as a hobby or professionally.
Good place to ask about a given brand you are considering.

For my own use I've taken to buying broken Viewsonics which can usually be repaired in an hour for $5 by just replacing a few caps.
- But, I only need one or two at a time.
.
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