Invert Slightly
Invert Slightly
Help with dimensions of Ray Ban Wayfarer 2113
I bought a pair of Ray Ban Wayfarer 2113 in the 50mm lens, however, are too large, although I found this size was good for the average female head size! When the arms are open do not sit in parallel or splay actually invested a little out. Does anyone have a pair that can look and tell me if this is correct or if you have made on eBay? Or as the arms? I would appreciate thanks. Sarah x
no I can think of … I use www.wildboyent.ning.com-Way easier to use, and much more fun than myspace. in fact it is still new!
HP F1723 LCD Monitor Repair – No Power
This HP1723 17 "LCD Monitor came in with the complaint of no power. On closer inspection could hear a soft intermittent sound from both front speakers. Since the speakers can produce a sound, this indicates that the power supply must be working well and that some components may be misplaced in the secondary side which had caused the voltage drop not to start. The LED does not light because the signal coming from the microcontroller (MCU) IC. This means that if the MCU does not receive the voltage from the power supply, not be sent to the output voltage LED power.
As usual, to open the cover LCD Monitor, one must be careful not to scratch or leaving a mark on the plastic housing otherwise the customer may want to accept zero or badly broken LCD monitor. Once the cover removed, you must remove four screws (two on each side) to get power / inverter and the main board. For some LCD monitors when you open the lid, you can easily remove all the boards.
The source of supply and the inverter circuit on a board while the main board and audio card are in separate table. As mentioned before in my previous articles, I do not immediately start to troubleshoot and repair any advice unless you have explored all the components with the eyes first. The power supply / inverter board are very new and the clearest sign that I could see were two filter capacitors (1000uF 16 volt) had a slight bump on the top of its casing. I believe that these capacitors bulky electrolytic that caused no power supply to function properly. I have checked all other e-caps as well, but all are found to be good.
In general, whenever a filter capacitor located on the secondary switching power supply (SMPS) are too high ESR, voltage decreases more than half causing many circuits will not work. Since I already found the bad e-caps, I have to be sure the secondary diodes (this LCD monitor using Schottky diodes) do not go defective or leaking too. When checking the Schottky diode (part number and SRF20100C SP10150) I found both to be working well. Replacement of only two bad e-caps with a good solved the problem of LCD monitor.
Now get this, if you want to be good at repairs electronic equipment, if other circuits can be analyzed as well. This means that if every time you replace only the fuse and the bridge rectifier you will not learn anything beyond that problem and get bored easily. Take my case, for example, after replacing the capacitors usually be considered also other circuits and find out what kind of numbers by certain components you use, what type of investor is the circuit that is owned by or transmission Buck Royer direct? for each backlight circuit using four capacitors ballast?, how many the LCD backlight is used, which is the number IC inverter part, what is the IC supply voltage inverter? How LED light bar when many test transformer secondary high tension? What if I take one of the backlight (it follows the work or close?). What is the brightness if line voltage is at minimum and maximum? You must answer all these questions if you want to be good in repairing LCD Monitor. You can apply this kind of questions on other electronic equipment also. This is a continuous process of learning to be good in electronic repair.
I do not want to replace or fuse covers every day without knowing how other function circuits or what are the components used in other circuits. While to analyze other circuits take a long time but I can guarantee that the time you lost it deserve. You will not be able to go very far if you have configured the way you think just changing the components and not know the surroundings. If you want to improve the repair electronics, then you need a change of mentality in you and only you can make a difference! Try this and I think troubleshooting electronic or LCD monitor repair will never be the same again. Have a great and a fantastic year!
About the Author
Find out more at the links below. You will be very surprised to discover that LCD and Electronic Component Repairs can make thousands of dollars even for a novice. You can find out the repairing secrets.
Find out How to Repair Any LCD Monitor – It is a breeze!
Learn about Secrets of Electronic Repairs.
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