Items Covered This Month
faults in LCD panels
PXT42SV1B plasma TV
Veriton 3500 desktop PC
Sanyo CP14G1(A) TV
I am often asked what type of flat-screen television to buy
these days. Should I get an LCD or a plasma display panel? My rule of thumb at
this moment in time (because there are a lot of new technologies in the pipeline
which will eventually supersede what we have now) is that for anything larger
than 104cm (42-inches), you should buy a plasma set; for anything smaller, get
an LCD set.
The dark curved vertical band (arrowed) on this LCD panel is a typical Mura fault but other defects can also occur.
Mostly this rule is governed by value for money, as large
plasma sets are cheaper than large LCDs. Each system has its pros and cons and
though there are many diehards who will not be weaned from CRT TV, I personally
think the pictures on LCD and plasma displays are utterly fantastic.
In the history of CRT television, the price has dropped from
the equivalent price of a house in 1939 to less than a week’s supply of
groceries. The price of thin flat-panel TVs has dropped a similar amount but in
less than 10 years. Probably due to the lower voltages used, LCD TVs have
smaller boards than their plasma counterparts and are therefore more reliable.
As usual, most faults are in the power supply units, backlight inverter panels
(for LCD sets) and smashed display panels.
One aspect which should be considered when shopping for a
plasma or LCD set is power consumption. While big plasma sets have bright,
contrasty pictures, their power consumption should make you think twice.
Typically, a large plasma set will pull 500 watts or more while a large LCD set
will probably be under 200 watts.