Computer And LCD TV Repairing

I believe those that are within the electronic repair line had found power supply that don’t produce enough output voltage. as an example, the B+ line of a monitor suppose to deliver 50 vdc but it only shows 20-25 vdc. All other ones output voltages at the secondary side dropped half. Faulty electrolytic capacitors with high ESR value within the primary power side could cause all the output power to decrease. any one know that a defective current sense resistor can also cause output power to drop? Yes, resistance increased within the current sense resistor could cause output voltages to drop into half. you cannot use normal multi-meter detect such low ohms resistor value (0.1-0.68 ohms). you'll get the esr meter to live accurately the worth of the sense resistor. If you are do not have the meter, just directly replace the current sense resistor and retest the equipment

As you know that there are many numbers on the sticker of a flyback ? Which one is that the part number if Need to look In the Web for more information about the actual flyback? to save lots of time here’s some tips for you.

LG flyback- It start with 6174z- # #

Sampo flyback- It start with FEA # # #

Samsung Flyabck- It start with FKG- # # , FKD- # # # # # #, FQB- # # # # # # so on

Acer flyback- It start with 19.700xx

Some China made Flyback- It start with BSC # # # # # #

In order to find out more about flyback part number, i suggest you search google and key in flyback manufacturer. From there you'll begin to understand as which part number that you simply should read.