Features: 1. Supports for intel / AMD motherboards with DDR2 and DDR3 interfaces without external power supply. 2. Use LED to indicate the open and short circuit of the data line address line, used to repair the motherboard that is not turned on. 3. Due to different motherboard design, some lights may not be lit. Can use the same motherboard to judge the fault. 4. When testing the motherboard of DR3, as long as the lamp is fully lit, it means normal, no need to test the resistance of the address line. 5. Finished by heat treatment, it is high hardness and durable. Specification: Material: PCB Interface: for AMD / intel motherboard DDR2 DDR3 Scope: desktop Size: 13.3 * 6 * 1cm / 5.2 * 2.4 * 0.4in Weight: approx. 28g Pakage list: 1 * Tester Card Instructions for use: 1. Install the 3V (CR2032) battery on the tester, test each memory slot of the corresponding DDR2, DDR3 motherboard. The motherboard does not have power, press the button switch on the tester, the test lamp is all bright and the brightness is the same. The signal line is normal, if the light does not shine or special bright, this signal has open circuit short circuit fault. (Note: In the test for intel motherboard, motherboards do not connect the CPU and a variety of connection cards can be measured in the test for AMD motherboards (such as 940 motherboard, AM2 motherboard, 1207 motherboard, 1366 motherboard), to plug in CPU, test light Will be bright. 2. In the test DDR2 motherboard, the address line no pull-up exclusion, all the lights all bright, that normal, if the pull-up exclusion, the address line lights, only that exclusion no open, but also with the pointer Table to further determine whether the BGA address line open. (How to determine whether the pull-up exclusion, the pull-up exclusion generally are designed in the memory slot next to the general There are several exclusion, one end connected to the address line, one end of the power supply) 3. Pointer table to determine the address line method: the pointer table is pulled to X1 that is one ohm of the stalls, black table pen then motherboard, measured with a red table pen, respectively, DDR2 address line measurement hole, address line resistance that BGA address Line without welding, such as a larger swing, indicating that there are BGA solderable PCB or broken wire failure.