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One possibility is that the plugs where the battery is attached are scr...d up. Try to check them and see if there is any obvious problem... If not, there might be a short-circuit somewhere near the battery (in the laptop, not in the battery..)
hello! your TV has external power supply, not a "built in". It's not just a "cord", but whole switch mode 100-240volt power supply. Those could be single or multistage DC output. You have to check those parameters off the TV's power input or off sticker at adapter itself. By having this knowledge, you might be able to find similar one locally or try to repair the original one, if you have it, at any local TV or even computer repair shops. Laptops have similar adapters. Good luck, Alex.
Check the power cord at the connector. Hp has a problem with the cords breaking internally. I had a problem with mine and found that if I played with the cord then it worked for a while. I ended up buying a new power supply.
take out the battery and try to start the computer with it plugged in using the power lead. If this owkrs without the battery being in then the power lead is fine.
If this doesnt work it could possibly be the power lead or the power supply inside the laptop. Does the power lead converter (the black box half way down the lead) get warm when plugged in for a while, if so the power supply is probably the fault
About 99% of the time the DC female adapter is soldered to the motherboard making it near impossible to fix. Getting solder on anything would ruin the motherboard.
It is possible that it is your Power Cord and not the jack on the motherboard. Same problem I had a few weeks go with a clients laptop. You may want to buy a new Power Cord, and try that before you go out and have to get a new motherboard (which can be VERY costly, or even buying a new laptop).
Post the model number of your laptop and I can direct you somewhere to get a good deal on a new power cord.
Try unplugging the 3 convergence yoke plugs and then trying to power on the set. The convergence plugs are located on the board on the left side of the tv looking in from the back and they are 3 identical plugs right next to each other they have a R B and G next to the plugs one letter for each plug just remember which plug goes to which location when you plug them back in.
check your power first breakers trurn them off then on check outlet for 220 then 110 at each side that would be meter leads two flat holes 220 then meter flat hole on one side red wire black lead to round hole should be 110 red lead other side flat hole black lead round hole should be 110 if thats good then pull terminal block cover off check cord for loose or burnt condition if its burnt dont freak just replace terminal block and cord they burn if they werent tight when installed now to get the top up get a putty knife face the drier and about 2 to 3 inches there are two spring clips push in with the putty knife while rasing the edge one at a time if its not the power look for the thermal limiter a small metel disc close to the heating element some are plastic if its open theres your promblem pull one wire off of it or youll get a flase reading through the timer