Flat screen Power supply repair
Not automotive related, but some shops and most homes have them nowadays and they all run on a power supply that most likely has .50 capacitors populating the boards. My old Samsung 46" started to randomly turn on off and on. click.....click....click...or in other situations you'll have a flashing red power light on the front of the TV an no picture. Pop the back and open the power supply cage. Youll (hopefully) find a few of these capacitors are swollen at their ends causing the 'vents' to buckle or even open. These are the bad one and need to be replaced. They are polarized so the stripe is the - on these and must follow the markings on the board, just replace as you took out. Voltage is not critical as long as you go over what is spec'd, never under. And of course, the capacitance value must be followed as its easy enough to buy the right value but sometimes the voltage is not stocked. Solder in the new ones and your back in biz IF these were the problem. Mine is back to working status with caps I scrapped from other devices. Computer power supplies have quite a few in them. I also have a Capacitance tester so I'm a little spoiled but you can usually tell: if they are swollen they are bad. Its often cheap enough to just buy all new caps in a kit for $15 on Ebay (by model number) or hit the electronics supply with a list. 2 cap next to each other are blown and one JP822 has let the smoke out. Good luck. These are about .30 a piece. Saved a $700 TV in its day.
Not automotive related, but some shops and most homes have them nowadays and they all run on a power supply that most likely has .50 capacitors populating the boards. My old Samsung 46" started to randomly turn on off and on. click.....click....click...or in other situations you'll have a flashing red power light on the front of the TV an no picture. Pop the back and open the power supply cage. Youll (hopefully) find a few of these capacitors are swollen at their ends causing the 'vents' to buckle or even open. These are the bad one and need to be replaced. They are polarized so the stripe is the - on these and must follow the markings on the board, just replace as you took out. Voltage is not critical as long as you go over what is spec'd, never under. And of course, the capacitance value must be followed as its easy enough to buy the right value but sometimes the voltage is not stocked. Solder in the new ones and your back in biz IF these were the problem. Mine is back to working status with caps I scrapped from other devices. Computer power supplies have quite a few in them. I also have a Capacitance tester so I'm a little spoiled but you can usually tell: if they are swollen they are bad. Its often cheap enough to just buy all new caps in a kit for $15 on Ebay (by model number) or hit the electronics supply with a list. 2 cap next to each other are blown and one JP822 has let the smoke out. Good luck. These are about .30 a piece. Saved a $700 TV in its day.
