1 LG TV stopped responding to the remote control.
An elderly person sends an LG 32LN52 Series TV (32LN520B in particular) for repair, because of a sudden “no picture” issue. The repairman “fixes” the “no picture” issue, but returns the TV with a new one. The TV has now stopped responding to the remote control. Two days later, the “no picture” issue also “comes back” … The elderly person wants to trash the TV, labeling it “completely broken”. Knowing how she will always complain that an electronic device is “broken”, while the solution is something as simple as changing a setting, reset or reconnect something, I intervened asking for the TV to give it a look.
Sure enough, the “no picture” issue was that the source was set to “HDMI 2” and the TV is fine… The newly introduced remote control issue is valid though. Batteries changed, tried another unbranded remote control, no dice. TV’s own, original remote control does transmit IR and even works with another LG TV I got. So, the repairman must have done something, messing with the IR sensor (taking it back to him isn’t an option for a number of reasons). Furthermore, there’s a gap at the bottom right corner front panel, preventing it from closing properly. Pressing it doesn’t help and trying to lift it (with a reasonable force, I didn’t insist because I didn’t want to break something) doesn’t open it either. Finally, the red standby led also isn’t working.
Here’s the service manual btw: https://www.manualslib.com/manual/793205...
1.Any ideas what's going on and whether it's relatively simple to get the remote control working again? Looks like the repairman hasn’t aligned or even connected the IR sensor properly or something? Or maybe it’s the fact that the panel isn’t being put back properly? I mean, I got the feeling the solution is something simple, but I am not sure what to do exactly.
2. Although I am not 100% technically incompetent, I got virtually zero electronics knowledge and equipment (such alligators etc.) so I am worried of electric shock. I’ve read current can be stored in capacitors and other TV parts, so simply unplugging the TV (obviously) may not be enough? Or since this isn't a CRT but a LED TV means it is safe to mess with? How dangerous is the "fix" I am going to try and which precaution measures can I take to make sure I am going to be safe? Thanks a lot.
1. I think it's highly possible that something in the TV wasn't connected back correctly.
2. Modern TV don't store as much power as CRTs. However, some of the capacitors can give you a shock. You can short the capacitors with a screwdriver, or, if you have a low ohm resistor, you can use that to short the capacitor(just don't touch the leads).
Andrew S さんによる