WD800B Galanz microwave oven door open after power on the bright lights, the turntable rotates, the fan starts and the display is not lit, all the function keys are inactive fault repair method |
| Time：2014-05-01 08:20:57 Source：Network Author：Unknown Clicks：1490 |
|
Since no computer control panel attaching a detailed circuit diagram of the circuit , according to the physical mapping of the relevant circuit shown in Figure 2 . The power is measured by dual 5.2V DC voltage on C1 rectifier output is 6.4V. 16V winding through D6 half-wave rectified output voltage of about 20V, which all the way through Q2, ZD2 get 14V DC voltage regulator as the control panel lights controlled oven , microwave and grill control three control relay drive power ; another path Q1 , ZD1 get 5.2V DC voltage regulator for the CPU to work .iq5service manual download site
Measuring an output terminal Q2 14V, a normal . The Q1e pole voltage output , measured nor its b -pole voltage , short-circuit breakdown or suspected ZD1 R1 open. ZD1 no obvious way to measure the short circuit , remove the R1 measurements have been open. Replacing R1, electricity measuring Q1e voltage is 5.2V, the display has a normal display . After each part of the test machine installed microwave recovery , troubleshooting .iq5service manual download site
3 Home Previous 1 2 3 |
|