vom multimeter

bridge, forcibly boot or abnormal shutdown, there is the phenomenon of intense hair hot. When using a multimeter to measure whether there is a short-circuit, first disconnect the power supply, dial out the ATX power cord. Then the multimeter to the diode position, Red pen grounding, black table pen to test points, we call it the measurement of the ground resistance. 1. Measure the 3.3V on the ATX power s

The motherboard leakage Solution method: In general, the motherboard is now a bad power supply heart slice is very likely, the power supply heart piece is broken, the CPU generally no temperature, at this time you can use digital multimeter diode gear measuring inductance and ground, if the multimeter is called a long word, power supply heart is good, if the inductor to the ground short-circuit, the mother

Network Diagnostics commands. 2.2.1 Hardware Troubleshooting Tool 1) Digital Multimeter For direct measurement of voltage, current and resistance of electrical values. Using the ohmmeter of multimeter, it can be tested that each core of twisted pair is connected, and it can be found that the first core of one end connector corresponds to the first core of the other end of the twisted pair cable. 2 doub

is still, using system disk repair, open a command prompt to enter Sfc/scannow return (SFC and/between a space), insert the original system disk repair system, the system will be automatically compared to repair. 　　Step 5: If the computer keyboard fails to continue, set the optical drive in the BIOS to insert the original system into the first boot device and press R to select "Repair Installation". 　　Step 6: If the computer keyboard fails, it is recommended to reload the operating system.

burning traces. Again careful examination, finally found that the bottom of the circuit board (to the hard disk interface set as the upper end) of the SMD resistance components in a component (its label on the 1r00) on the surface as if slightly puffed up the bubble skin, a shave with a finger is lost, but there is no obvious burning mark on the component, only a metal point of the size of the needle. Use the Multimeter electric block to measure the

XP system computer Hardware common problem analysis is as follows: 1: The computer's motherboard capacitor damage to our graphics card is not normal use, the solution is that we directly use the capacitor on the motherboard to replace the nominal value can solve the problem. 2: The computer power switch can not be used normally, the Start button is not open after the computer, the solution we preferred to test the computer, the use of a multimeter c

prepared lamp on the power-on however no reflection, excluding the lamp. 2, the author again test whether the motherboard has more than 3-4 sets of voltage to the High-voltage board, connect the motherboard to the high voltage board to remove the test voltage using a multimeter (in general, if the maintenance company has the same type of high-pressure plate can be replaced by replacing the high pressure plate test, but I do not recommend that you do

work in the range of khz. The output power is typically 0dBm (1Mw) or less, operating at a distance of 2 to 5km, and supports all universal connectors. 3, optical loss test equipment (also known as optical multimeter or optical power meter). In order to measure the loss of a cable link, it is necessary to emit the calibrated stabilized light at one end and read out the output power at the receiving end. These two kinds of equipment constitute the o

key fails or the solder joint is not welded. When checking, open the key according to the method described above Measuring the on-off state of the contact with a multimeter resistor. If the key is pressed at all times, it indicates that the key reed fatigue or poor contact, need to repair or replace, if the key press the contact is broken normal, the explanation may be due to virtual welding, desoldering or gold chip hole oxidation, can be measured

File-> New, 14-52. Enter the title and the number of rows, that is, the maximum number of monitoring windows, here is four. 14-6Note: Minimum 2 second update interval3. Now simply drag the sensor from the left CE to the right CE window. The display can be selected as–signal Plotter. Displays one or more sensors, and if there are multiple, the hierarchy is displayed. If the display is large enough, it is displayed in grid mode.By default, the maximum and minimum values are automatically set for

How to open an offline Web site Using the Teleport Ultra software, you can create a new project file, and then open the appropriate Web site using offline mode. Step 1: Double-click the Teleport Ultra program icon on the desktop, open the Program main window day, click the File New Project Wizard command, as shown in the following illustration. (Universal meter and Multimeter use method http://www.woaidiannao.com/html/xwzx/6599.html) S

software problem first) general situation out a driver installation prompts. Three. Motherboard issues We first use a multimeter to measure the USB four lines (red +5v white data-data-green data-data-lacquer line) multimeter Red table pen to the ground black pen measurement (white line and Lu Liling line. The resistance of 50 euro, the two lines are from the South bridge out, if the resistance changes to

the motherboard is not compatible, you should replace the video card. "Instance 3": Motherboard does not boot, boot no display, no alarm sound Fault reason: There are many reasons, mainly in the following several. Treatment: For the following reasons, exclude each. Requires you to be familiar with digital circuit analog circuit, will use multimeter, and sometimes need to use the debug card to check the fault. (1) CPU-related issues CPU does not

Offline Live detection Under normal circumstances, in standby state of ps-on and Pw-ok two power signals, one is high, the other is low level, plug 9 feet only output +5VSB voltage, as long as the meter to measure the voltage to the parameter value, you can determine the result of the problem. Artificial Wake power supply detection Use a thin wire (such as a paper clip, fine copper wire, wire or tweezers) to ps-on the 14 feet of the ATX plug (the only Green Line) and the 3rd on the other end.

card must choose to select impurities less conductive performance is very weak, even less than the pure water, the experimental test found that tap water also meet the requirements, of course, the fear of video card problems friends can buy a few bottles of pure water to clean. First let's look at how to use tap water to clean the video card: In order to dispel everyone's concern, we first have to measure whether the electric conductivity of tap water, here need to use a

two classification methods: According to the general degree: the instrument can be divided into general instruments, such as oscilloscopes, multimeter and other instruments, professional strong special instruments, such as old Xie Digital TV, this professional field will have a lot of special instruments, such as SFU, VM700, TG39 and so on. by function: Lao Xie The instrument is also divided into two categories, output class (signal sour

In order to search the LCD display in use of the fault, you can use the pointer-type multimeter rx10kω resistor file for tracing. This is a high resistance file, you can check the impact of the display of a variety of pass and break. And because it has 9~15v DC voltage, it can drive the LCD display, Judging whether the measuring device is normal from the display state. But since the multimeter outputs a DC

. Where there is doubt, you can use the multimeter to measure. Touch some of the chip's surface, if abnormal hair hot, can change a chip to try. 3. Resistance and voltage measurement method. To prevent accidents, measure the resistance between the power +5v and the ground (GND) on the motherboard before powering up. The simplest method is to measure the resistance between the chip's power pins and the ground. When the power plug is not plugged in, t

Today little X teaches you to use your smartphone to do a universal remote need to prepare some materials: 1: An infrared emitter with 38K carrier, (wavelength 940nm) Standard mode: 30khz~60khz; Remote mode: 38K.Our universal remote control best Use brand brand 38k+-5kb are applicable to the normal 38k+-3kb applicable part of the remote control carrier maximum to the maximum 38k±20k, our remote control will not be used, so our universal remote control only about 85% of the infrared device Applic

displayed data. The automatic range mode is displayed by default. the minimum and maximum values are automatically set. If you want to change the minimum and maximum values, you need to disable the automatic range mode, and then set the minimum and maximum values in the Scales label in the Properties dialog box (right-click in the chart. -Multimeter: displays the value of the sensor in numbers. In the Properties dialog box, you can define the upper a