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Troubleshooting Dell LCD monitor flashes E173FPB with symptoms of electricity is easy if you know the correct procedure for the test. There are two sections in the monitor, can cause bursts of power. E 'primary or secondary section or even sometimes both sides may be defective. Thus, to isolate the problem as a section type. I) a 12 volt car bulb (the brake light and the connection between the supply of 12 volts and the cold mass with the fuse removed. If the lamp continuesflashing the odds are a very high power is the main problem.
Do not neglect the other lines of tension, and the 3.3 and 5 volts. When all the components is short-circuited, the supply of 5 and 3.3 volts, the power may flash. If the 12-volt light comes on, it can be assumed that the card works well and a bit 'further down the line that makes the flash power short-circuited. When the lamp comes on, and will continue to monitor the performance of the party, willwasting your time. Should now concentrate on the second part of the track, like the four C5707 transistors that drive the high voltage transformer on the edge of the inverter.
Just think of these transistors as the horizontal output transistor (HOT) in the CRT, the flyback transformer unit, where he worked so hard and the chances of a collapse is very high. Examination of the four transistors have found one of them on a short-circuit the reading with an ohmmeter .. These transistors can be obtaineddefective themselves or there may be other components that cause a short circuit, like a failed high voltage transformer, however, be reviewed every four high voltage transformers with Bell and caused Ohmmeter test development properly.
Well, here's the secret I'll show you. If you only replace the defective transistor, the chances are very high, transistor-transistor or other violations C5707 again. In general, what is a technician is testing other transistorboth with a digital or analog meters. If you try both transistors meters, you missed the transistor is defective, because both feet are telling you not to read HFE transistor. A few meters only refer HFE digital. In other words, we must, however, examining the reading of an HFE transistor. Although you can replace the other three transistors directly, why not, it's a bit 'of detective work to find the cause of the problem?
With peakElectronic gas analyzer Atlas, I was able to clarify the difference between a good and a bad transistor. HFE C5707 is a good read transistor of 320 to about 390, but the bad news is 467! The other two have played C5707 transistor 350. In the above case, only two C5707 transistors have been replaced and save the other two. I had to burn in this test the LCD monitor for several days and it worked perfectly.
Conclusion: If E173FPB Dell LCD monitor or other remediesModels such E172FPB or E171FPb, the test method is basically the same. You can also use these tests to other brands of LCD too.
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