Do It Yourself TV
There are many models of televisions in the
market and with the invention of color television it has become even
more attractive. With so few knowing so little about electronic
gadgetry it is no wonder they can be fleeced by a technician who may
make a home call to repair the set or have the set moved over to the
workshop. It is good to have a little knowledge of the working of
the television and try to rectify a small fault without having to
call in the professional.
There are basically three main faults that can be settled without
having to open up the television and can be taken care of quite
easily.
Snow on the screen
Snow on the screen is caused by a very weak signal. If the set is
receiving a signal through an antenna then the antenna has probably
turned away from the direction of the transmission. The narrow end
of the antenna should face the direction of the transmission. It is
always a good idea to check the cable at the television end for
breakage before checking the antenna. If this does not solve the
problem it may be the ‘tuner’, which will have to be replaced by a
professional. However, remember that snow accompanied by the
sound of snow will always be caused by defective antenna or a blown
tuner and is fairly cheap to fix. Nothing else can cause this
problem. But, if there is snow without the sound then there is
another small circuit that needs to be replaced, this is called the
Intermediate Frequency Section and is pretty cheap too.
Snow accompanied by sound of snow
Sound of snow but no snow on the screen can be rectified by
fine-tuning of the set. The antenna may have to be slightly turned
if the sound of snow is not filtered. However, if there is no sound
at all and the picture is fine then the speaker of the set may have
blown or the volume control may be defective. Very rarely will the
audio circuitry have to be changed.
Vertical Rolling of the Picture
Vertical rolling of the picture can be settled by adjusting the
tuning of the set at times but most of the time it has to be
rectified by adjusting a small hidden control at the back of the
set. This is usually located somewhere towards the middle of the
rear of the set.
One must be careful not to open the television set as there very
high voltages that exceed 12,000 volts. Without the prerequisite
knowledge it is possible to get a bad shock while trying to repair
the set at home. However it is always good to know what the
professionals are doing as well so that they cannot fool the
gullible.
About the Author: D. Benjamin is the owner of
iapsales.com LLC - a family business specializing in HVAC products. We
are distributors of
Qmark Heaters,
electric tankless water heaters,
bathroom heaters,
patio heaters, electric heaters,
portable air
conditioners & electric towel warmers. Shop on line at
www.heateroutlet.com for these great home improvement products.
Iapsales.com LLC was established in 2003 and is the sister company to
Innovative Air Products located in historical Exeter, NH. We are a 2nd
generation manufacturers’ rep firm dedicated to providing residential &
commercial heating, ventilation and air-conditioning equipment. We offer
a great selection online at the lowest prices anywhere. We can also be
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