TV Tech Electronics
Hired 1 time
- What types of customers have you worked with?
See a typical component level repair by our skilled techs by copying the link and pasting in the address bar of your browser: http://www.tvtechelectronics.com/TypicalRepair.html This repair was for an RCA model L42WD22YX6 42″ LCD television. There are very few parts available for this tv after it goes out of warranty, the manufacturer expects you to put it in the dumpster and buy a new one! The symptom was Has sound, no picture. I was quickly able to determine that the power supply was being turned on by the main board and that all of the voltages there appeared good. After a short investigation, I found the main fuse on the slave inverter open and a 2 ohm short across the filter caps. I removed shorted mosfets, SQ8 & SQ9 (FDD8447L) but still had the short across the filters. The IC SU1 (BD9897FS) was also shorted. The 2 filter caps were slightly puffy at the top. Parts replaced to repair the set were: IC SU1 BD9897FS SQ8 & SQ9 = FDD8447L 470UF/35V x2 SF2 = 10 AMP SM FUSE
- What advice would you give a customer looking to hire a provider in your area of work?
All new televisions for sale today suffer from 2 major faults. First, manufacturers are now making their circuit boards by putting parts on both sides of the board so that they will have a compact board that fits into a smaller space, produced at a cheaper price. Because of this, they can no longer dip the circuit board in solder as they used to do or they will destroy the parts they put on the bottom. Instead, they sprinkle the board with a poor quality solder dust and melt it with a type of blow dryer device. The connections come un-soldered in just 1 or 2 years instead of lasting 10 or more years like they used to do. This is part of the mechanism that allows them to bring you that cheap TV, although this same poor way of soldering is done on the more expensive models too, so that they dont last too much longer than the cheap ones. This problem is readily repairable by soldering the broken connections by hand with the proper solder. When done properly by an experienced technician, your product can easily last many times longer than when it first left the factory. Second, manufacturers often put in a few undersized or low quality key parts, calculated to last until the end of your warranty. If one of them fails while still under warranty, your circuit board is replaced with another containing the same low quality parts. Once Tv Tech Electronics replaces these flawed parts with a quality part, your machine can last longer the second time around, sometimes by many years. In many cases, you could say we actually remanufacture the circuit boards in your television.