Feeling346
- Apr 10, 2016
- 9
- Joined
- Apr 10, 2016
- Messages
- 9
Hi all. I'm a new member and know little about electronics but need help. I have a sailing boat that has a 12volt electrical system. I wish to run a TV on it and current consumption is very important. I have a brand new Samsung LED TV that would normally run from a transformer plugged into household mains. The TV requires 14volts DC. So I bought a DC-DC boost converter plugged it into the boat electrical system and carefully adjusted the output to 14volts. It destroyed the TV instantly. I then some how came to the conclusion that it needed a regulated supply so I bought a new DC-DC converter but this one had two pots to control both the current and the voltage. I had previously measured the current draw when I plugged it into the house and it drew between 1.2 - 1.6 amps. Fortunately the retailer swapped the now dead tv for a new one and I started again. Carefully adjusted the the outputs to 1.6 amps @ 14volts and plugged in. The TV worked perfectly!. Problem solved. Switched it off and switched it on again 5 minutes later and it's dead and a nasty smell of burning from the TV. Retailer swapped TV again. This time I bought a new Dc-DC converter with a digital readout so not only could you set the parameters for the volts and amps without using a seperate meter you could see what the TV was drawing in real time. Wired it up and switched on. Perfect. Ran the TV for a couple of hours and was very happy. Switched off and went and had a coffee. Came back switched it on again and the TV died instantly accompanied by the now familiar smell of burnt electrics from the TV. Clearly I'm doing something really stupid and the first people that read this will be laughing their heads off. However, once you've stopped laughing please tell what the stupid thing that I'm doing is and maybe the solution to my very frustrating problem.