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Rockford Fosgate 1-Farad Digital Capacitor???

I just purchased two sub woofers and an amp. I bought the Rockford Fosgate 1-Farad Digital Capacitor with it. I have never installed a capacitor ever. Just wondering how I would connect it and how I charge it. Any help would be greatly appreciated. Thanks!!!!!
Every where I read it is saying to charge to the capacitor. Is it safe if you don't and just hook it up??

Well actually its real simple. You don't have to charge it but when you first hook it up and turn it on you'll hear a pop but don't worry its just the electricity going in the capacitor because its empty. But all you have to do is cut your power wire and put the connector on it and on the other end of the power wire also, then you hook your ground wire to something metal but make sure you DON'T HOOK IT UP TO THE SAME GROUND AS YOUR AMP GROUND.... And that's really all there is to it.. Hope this helps you out. You acn also check out www.RockfordFosgate.com for info!

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Repairing the DELL E153Fpc LCD Monitor with the complaint of display shutdown after few seconds (power LED still on) was not difficult. Normally when this type of problem happens, we would first suspect the inverter board, then the filter capacitors and lastly the main board. A defective in one of the lamps and a faulty TL1451AC PWM IC or inverter ic may caused the display to shutdown as well. If the lamp is defective, it will send a feedback to pin 3 or 14 of TL1451AC IC and caused it to stop producing output signal thus the display just shut off once you switch it on. The power board is using a SG6841D pwm ic and a FQPF7N80 power fet . If this power section blow, it is quite easy to troubleshoot because it has fewer components. You can also use other part numbers to substitute the power fet.

As usual, after opening up the cover, I would first check for any burnt components, loose connector, cracked board, dry joints and etc before doing the voltage test. As for the lamps, I would check it last because lamps were seldom spoilt. Upon scanning for any bad components before starting the voltage test, I found a filter capacitor that had turned into darker color. Using the ESR meter revealed the ESR ohm has shoot up to 12 ohms. This filter capacitor located at C922 with the value of 1000 micro farad 16 volt. If you donÂ’t have the ESR meter you can always use the digital capacitance meter. The value that I got from measuring the bad capacitor was 57 microfarad. If you donÂ’t have ESR meter, make sure you get one-itÂ’s fast and accurate.

Now, the question is why a filter capacitor can cause the display to shutdown? If you carefully see the picture, I’ve drawn the yellow path to show you how the voltage is flowing. By the way, the voltage at the bad filter capacitor line is 12 volt. The voltage passed through a SMD transistor in the start circuit and flow straight to pin 9 (VCC) of TL1451AC IC. In order to let the 12 volt to flow through the transistor and reach the vcc pin of the ic, first, a ‘on’ signal must be sent from the main board to trigger the transistor. If no signal send to the transistors (off signal), both transistors can’t be turned on and no voltage will follow through the ic. Thus if the main board or any of the start circuit components spoilt, there will be power but no display because the TL1451AC would not send signal to the Royer type L, C resonant and boost circuit, so no high voltage produced by the high voltage transformer and this will lead to no display.

In the above case, the LCD Monitor display shutdown was due to the ripple because of the bad filter capacitor. The ripple caused the TL1451AC IC to be unstable and eventually shutdown the output signal. Replacing only the filter capacitor solved the DELL E153Fpc LCD Monitor shutdown problem.

Conclusion, donÂ’t always presumed that LCD Monitor is very tough or difficult to repair. From the above article, you could see that the caused of the shutdown problem was only a bad capacitor. If you fully understood how LCD Monitor works, then chances for you to successfully repair the monitor is very high but again it depends on the availability of spare parts. If you ever come across any LCD Monitor sent to you for repair for the first time, go ahead and start troubleshoot it. Who knows one day LCD Monitor repair could become one of the major source of income to you and your business.

Jestine Yong is a electronic repairer and a writer, for more LCD Monitor repair secrets, please visit his website at http://www.electronicrepairguide.com/lcd-monitor-repair.html now.

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