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The principle and repair Nintaus N525 super VCD

Time£º2014-01-25 09:03:09  Source£ºNetwork  Author£ºUnknown  Clicks£º11809
  
2 , to determine CL8830A damage can be measured ground resistance of its power input , usually more than 300 in Europe , such as less than 200 in Europe , you can hand touch the chip temperature , such as cold, basically determines the power problems , usually caused by a filter capacitor. If hot, the chip is generally bad .
3 , the crystal is also relatively easy to damage the circuit devices , in the judgment, which can measure the voltage across the voltage across the normal difference of about 0.3V, as identical, there may be a crystal or bad, there CL8830A caused ( but relatively rare ) , higher than the other end of the crystal as many terminal voltage , the crystal may be one of the following two capacitor leakage .
4 , "no output " and " black" can not be confused , "no output " reflected on television did not change significantly after boot , that did not work the video circuit , plug the AV cable not plugged in with a kind of circuit compared to the failure involved wide , power, reset , 27M, CL8830A are likely to cause . "Black " black reflected on television , in fact, at this time has been output video disc player , but the output is black , people mistakenly believe that " no output " , look closely, you will find that the AV cable with plug is not plugged difference, this failure than the " no output " is easy to solve , is generally a bad SDRAM or 8830A .
5, SVCD used movement of - dust movement and general movement, the company allotted mostly dust movement, maintenance of the dust cover can be removed to replace the general movement, but later removed to note small head touching the radial movement of the switch in place that point, generally have heightened some , otherwise users may use two or three months will be returned repair.
6 , the early models of electric easy placement breakdown , post products except C135, 136 and occasionally bad , but basically the IC damage. Early models used in circuit boards and more for the big board , later replaced by a small plate , the circuit is still the same , and even the number of each components are the same .