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Dead LG 32LX2R-ZE LCD TV Repair
I was given one of these TVs to have a quick mannual at and found that there is a common power supply fault. This particular TV was dead, no sound or display and no standby light. Although inspecting the capacitors found no leakage or bulges, the power supply develops a fault and is easy repairable by simply replacing the faulty capacitors.
I needed the caps the same day so I picked them up from the local maplins. The easiest way to fix is to simply replace all of the caps that can be affected by the fault. Polarised This means that it is very important which way round they are connected. Connect them the wrong way and BOOM! Hello, I got the same problem with the same tv and moddel which is 32lxr above.
Could you just let me know which is the best way to check capacitors if they are working or not? My tv is dead and no lights are on even though tv is new. Hi usually the best way is to check for physical bulging and leaking of the caps.
You can use a cap tester etc or a multimeter, but usually you can see they are bulging. Usually best to change all the Caps, that will probably fix it to be honest!
Hi Phil Dont worry too much about the DC voltages if your not sure. Basically the wires coming off the PSU to the mainboard. Normally you never need to change the big v or similar value cap. My kettle blew which blew all the downstairs sockets and although kitchen problem has been sorted the tv wont work —any suggestions?
Hi I would check the caps, if they are goosed the TV may well work fine until it is unplugged or power is disconnected from the PSU As it is a switch mode power supply it may work fine even when faulty until power is removed. Hi, just wondering if I could get away with using a 25v uf cap, as opposed to the original and stated 10v cap? Hi Bob, as long as the voltage is above and reasonably close it will be fine.
Never fit a lower voltage cap. Hi, change the Caps. Sounds like a cap fault to me. The main AC fuse? Not on the power supply then? Do I have to solder that component away or does it have a socket?
Yes its a soldered fuse, directly in line with the mains input. Looks like a normal plug fuse kind of but with legs soldered on either end and covered in a form of insulation. Just unplug the set and test with a multi-meter for continuity.
Hello, I have a tv just like this but do not have the remote to it. Do they pull up or twist?
Rightio, have bought capacitors and a 30w solder iron. What can I do now? Hi Alex, sorry about the late reply. On the underside of the board, apply solder to both pins. Heat the solder whilst gently pulling the cap away from the board.
The flux in the solder will make the cap loosen. Gently rock the cap from leg to leg whilst applying heat.
If you pull too hard the board will become damaged. The holes that the component legs go through contain a metal rivet that will pull out with the legs if your not careful.
If this comes out, the board can sometimes be difficult to repair.
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After removing the component, use some solder mop to remove any left over solder. If the solder wont budge from within the hole — I cheat and use 32lz2r hobby drill with a tiny drill bit and drill the excess solder out. Warning -make sure you fit the replacement capacitors the correct way around — get the polarity wrong and they WILL blow.
It sounds like you have left the legs in the board, manuql an ideal situation. You can solder a replacement cap directly to the prongs manusl leave them in situ. Remember your working with a mains power supply here, please be careful. If your not sure take the board to a local repair shop, with the caps.
Hi, Thanks for the useful posting. I changed the 14 power supply electrolytic capacitors this afternoon and my LG 32LX2R is now working perfectly. Opened the pannel founed 2 capacitors blown.
Could this be the reason for it? Yes of course could be, a loud bang will be the PSU for sure. I would replace the caps first and the soldered fuse could well have popped, if not sure look for a replacement PSU. I have an LG 32LX2Rwill not start at all, it plugged in and lights a red light in otherwise nothing. Push the power button nothing happens.
Do you know what the issue could be if the capacitors are perfectly fine but just getting the standby light still. Hi there are loads of things that could be causing your fault. If you have access to a multimeter, I would carefully check the output voltages from the PSU. Hi there at last i found some good place to ask and i have a serious question.
Hi, it is usually recoverable — how did you damage the board? If the board is arcing then you can usually drill through and patch using mod wire, or again drill and shrink tube the capacitor leg and attach to a point in the trace further along. It is hard to say without seeing the damage. Your email address will not be published. This site uses Akismet to reduce spam. Learn how your comment data is processed. Powered by WordPress and Sliding Door theme.
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The caps are all located in the same area on the PSU: This fault appears on several different models: This entry was posted in TV Repairs. November 16, at 8: November 24, at April 10, at 32px2r 11, at 9: May 10, at 7: May 11, at May 15, at 3: May 24, at November 6, at 3: November 7, at mwnual February 4, at 1: Hello, Where is the fuse on power supply sitting. February 4, at 4: April 9, at February 14, at 6: Probably a bad Power supply.
Stuck in standby, check the capacitors. April 5, at 4: April 5, at 6: February 8, at 6: February 8, at 7: April 4, at 2: April 5, at 2: May 9, at 32lx2d May 12, at 2: November 17, at November 17, at 5: September 26, at 4: September 28, at 6: