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Re: REmote control RM-C1257G not working even after...
1. Get camera phone
2. set camera phone to to take picture
3. point remote at camera and look at the camera display
4. press buttons on the remote, you should a light from the Remotes IR.
5a. If NO light is seen, your remote is broken. you can try replacing the batteries to double check
5b. if Yes, light is seen. Your remote is working and you may have a problem with the TV.
As a double check, get a remote you know is working and try the same thing to verify that you are checking the remotes correctly.
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I have the copy of JVC LT-42X579 service manual that covers the following :
precaution specific service instructions disassembly adjustment troubleshooting wiring diagram block diagram circuit diagrams pattern diagrams voltage charts waveforms using p.w. board & remote control unit exploded view parts list exploded views printed wiring board parts list remote control unit parts list (rm-c2050-1c) packing packing parts list If you want the copy click it HERE. Jdvillanueva
1 if this new ordere it is exacly the same that should work when i say exacly that must have only the same button on it
2 you should try to take off the cover to that old remonte and try to clean the taste and then the change battery clean suport to battery wash your rubber taste and put all togheder and should work if that not hapened the problem it is from inside tv
and to that new one see if you have a shift buttun on it and push that or push tv button and try again should work