Yes, you too can be the proud owner of a home-entertainment system and it doesn’t have to cost you a small fortune. If you have ever wondered how your mates get to have sound booming from seemingly every corner of the house when merely watching TV, we have the answer (naturally!). All you need to do is connect your TV to your video machine to your Hi-fi (these don’t have to be top of the range) after having acquired a couple of cables to make all the connecting possible.
You WILL NEED
(This will vary depending on what it is that you are connecting to what.) Read the rest of this entry »
Throughout this post, references are made to meters and their use in continuity testing of individual parts of the appliances and their connecting wires. All testing and checking for ‘open’ (not allowing for current flow) or `closed’ circuit (allowing current to flow) must be carried out using a battery-powered multimeter or test meter. Testing should never be carried out on live items under any circumstances. Appliances must be disconnected from the mains supply. Read the rest of this entry »
The speed control on this type of mixer results from the interaction of mechanical action and electronic control. Two variations of electrical control can be found but each uses the same mechanical action.
Two small spring steel plates are fixed to the cooling fan on the lower end of the armature shaft. They are slightly bowed and joined at either end by a small weight. Only the top plate is secured to the fan and shaft. When the motor rotates, the weights on each end of the joined plates are forced outwards by centrifugal force. As they are formed in a bowed configuration and joined at either end, the outward movement of the weights causes the lower plate to be forced downwards. The degree of movement is proportional to the rotational speed of the armature. This movement is used to actuate a switch on the speed control panel. Read the rest of this entry »
The brush roll is supported on bearings at each end so the barrel rotates freely. Types of bearings, barrels and brushes differ from model to model as well as between manufacturers. Some manufacturers supply individual parts for the brush roll, such as brush strips, bearings and barrel; others supply only complete assemblies. The brush roll on some models may have removable brush strips, whereas others may be a solid brush roll of wood or plastic with fixed brushes. A small selection is shown here to highlight the differences. Read the rest of this entry »
The upright style of vacuum cleaner is perhaps the best for large areas of carpet. It is especially good at removing dirt embedded within the pile and pet hairs from the surface, even on sculptured carpets. A drawback with the basic upright cleaner is its difficulty with cleaning stairs. The problem has been overcome with the modern combination of upright and cylinder cleaner. This type may be the best option if you have large areas of fitted carpet and staircases. The motor within the upright cleaner creates the airflow (suction) and drives a rotating brush roll, often called an agitator barrel. Read the rest of this entry »
For symptoms, possible causes and action relating to cylinder vacuums, see the Fault finder for upright vacuums. Unless the appliance has a power head attachment, references to the brush rolls can be ignored. Checking a long hose for blockages can be simply done by dropping a coin down one end, gradually lifting the hose and listening to the movement of the coin. If a blockage is present, the point at which the coin stops indicates the location. If the blockage is near either end of the hose, it may be necessary to remove the actual hose end if possible. In most instances, reversing the airflow through the hose frees the blockage. Read the rest of this entry »
